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Effects of stretching on muscle strength, endurance, and power performance: A systematic review and meta-analysis Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2024-01-08 Alex Lopes dos Reis, Laís Campos de Oliveira, Amanda Yasmin Vieira de Souza, Antonio Stabelini Neto, Raphael Gonçalves de Oliveira
BACKGROUND: The acute and chronic effects of stretching preceding exercises on strength, power and muscular endurance are still not entirely clear in the literature. OBJECTIVE: To verify the acute and chronic effects of the main types of stretching (static, dynamic, PNF, and ballistic) on muscle strength, power, and endurance. METHODS: A systematic literature search was performed in: PubMed, Web of
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Significance of vasti muscle activity during voluntary isometric contraction: Pre-activation of vastus medialis for engaging vastus intermedius Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2024-01-08 Yoshitsugu Tanino, Wataru Yamazaki, Yuki Fukumoto, Takaki Yoshida, Tetsuya Nakao, Toshiaki Suzuki
BACKGROUND: A potential relationship may exist between the vastus medialis (VM) and the contractile efficiency of the vastus intermedius (VI) due to their anatomical connection and common innervation by the same branches of the femoral nerve. However, this relationship has not been explored using physiological experiments. OBJECTIVE: This study aimed to use electromyography (EMG) to investigate the
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Reliability of scapular position and periscapular muscle strength tests in healthy subjects with forward neck and rounded shoulder posture Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2024-01-08 Tae-Gyu Kim, Jun-Seok Kim, Haimin Zhang, Soo-Yong Kim
BACKGROUND: People with forward head posture (FHP) and rounded shoulder posture (RSP) may experience shifts in scapular position and alterations in the strength of the muscles surrounding the scapula. Therefore, a reliable scapula position and scapula muscle strength test are required to identifiedscapula problem and provided appropriate intervention programs. OBJECTIVE: This study aimed to determine
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The relationship between muscle strength and quality with functional performance in women mid- to long-term after Roux-en-Y gastric bypass Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-12-16 Gustavo N. Gomes, Marvery P. Duarte, Martim Bottaro, Fernando Lamarca, Mariana Melendez, Kênia M.B. Carvalho, Eliane S. Dutra, Ricardo M. Lima
BACKGROUND: The reduction of muscle mass and strength commonly observed after bariatric surgery might negatively affect the individual physical function. Muscle quality is also of functional relevance in different populations, but its significance in patients who underwent bariatric surgery has yetto be explored. OBJECTIVE: To examine the association between muscle strength and quality with physical
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The effect of concurrent high-intensity interval training and resistance training on the lower body maximal strength and explosive power: A updated systematic review and meta-analysis Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-12-16 Yonghui Chen, Xinmiao Feng, Lanmin Huang, Jing Mi
BACKGROUND: Endurance training can have a negative impact on strength training and may lead to reduced strength gains, known as the interference effect. However, high-intensity interval training (HIIT) as an endurance training mode may reduce this interference effect. OBJECTIVE: This systematic review and meta-analysis aim to investigate the effects of concurrent HIIT and resistance training (RT) on
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Effects of non-elastic taping on the kinematics of the lower extremities during overhead squat in subjects with dynamic knee valgus Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-12-16 Won-Young Park, Dong-Yun Bae, Da-In An, Jong-Chul Jung, Go-Eun Choi, Hye-Lyeong Yun, Yong-Il Shin, Jun-Seok Kim, Soo-Yong Kim
BACKGROUD: The control of hip and ankle joint movement is important for patients with dynamic knee valgus (DKV), but few studies have used non-elastic taping (NET) to adjust alignment of the hip and ankle joints during overhead squat (OHS) simultaneously in patients with DKV. OBJECTIVE: We investigated changes in lower extremity joint kinematics and dynamic balance after the application of NET to the
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The effects of thoracic mobility versus lumbopelvic stabilization exercises on lower extremity flexibility, dynamic balance and proprioception in patients with chronic ankle instability Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-12-16 Ecem Nur Takındı, Elif Tuğçe Çil
BACKGROUND: Chronic ankle instability (CAI) presents neuromuscular control and functional performance difficulties. Although ankle-focused rehabilitation is widely practised, the relative effects of exercises targeting thoracic mobility and lumbopelvic stabilization in addressing CAI have not beenthoroughly investigated. OBJECTIVE: The study aims to compare the effects of thoracic mobility and lumbopelvic
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Self-rated flexibility significantly reflects the hip flexibility, but not the ankle flexibility Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-12-02 Wootaek Lim
BACKGROUND: Many studies have reported that exercise increases physical flexibility; however, no study has verified whether patients perceive an increase in physical flexibility after exercise. OBJECTIVE: This study investigates the correlations between increased duration of exercise and the self-rated flexibility (SRF) and those between the SRF and quantitative flexibility. Variations in the SRF between
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Regional hypertrophy of muscle cannot be predicted by surface electromyography Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-12-01 Aitor Zabaleta-Korta, Unai Latorre-Erezuma, Eneko Fernández-Peña, Jon Torres-Unda, Jordan Santos-Concejero
BACKGROUND: In the last decades, emerging evidence has shown that muscle growth is not homogeneous along a muscle head. This phenomenon is known as regional muscle hypertrophy and has led to several questions regarding the implications it may have for health and sports performance. OBJECTIVE: The aim of this study was to determine whether regional hypertrophy can be predicted by surface electromyography
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Do judokas present differences between upper limbs for the concentric strength of the internal and external rotators of the shoulder? Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-11-30 Esteban Aedo-Muñoz, Ciro José Brito, Pablo Merino Muñoz, Otávio de Toledo Nóbrega, Bianca Miarka, Matias Gonzalez Valenzuela, David Arriagada-Tarifeño
BACKGROUND: Long-time judo training can lead athletes to develop upper limb asymmetry and shoulder asymmetry during force production, mainly in the action of pulling, pushing, and throwing; that requires higher strength and velocity of the internal and external rotators of the shoulders, which mayalso result in shoulder injury, or a decrease in judo performance. OBJECTIVE: To investigate asymmetries
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The effects of dumbbell versus TRX suspension training on shoulder strength, vertical jump, and spike speed in volleyball players Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-11-28 Soner Ozdamar, Ani Agopyan, Selda Uzun
BACKGROUND: Limited research exists on how various resistance training methods, such as TRX and dumbbells, impact sport-specific technical skills and muscle performance in young athletes. OBJECTIVE: This study aimed to compare the effects of 8-week Total-Body Resistance Exercise (TRX) suspension training and Traditional Dumbbell Training (TDT) on shoulder muscle strength, leg power, and spike speed
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Continuous palm cooling’s effect on heat transfer and physiology Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-10-05 N.L. Patel, P.M. Quesada, J. Wellwood, B.C. Skutnik, J.P. Daily, J.F. Caruso
BACKGROUND: Excess heat accrual is perhaps the body’s most dangerous exercise-induced stressor. While palm cooling uses conduction to reduce body temperatures, to date the volume of heat transferred by this treatment resulting from exercise is unknown. OBJECTIVE: Asses continuous palm cooling’s impact on heat transfer and physiology. METHODS: Thirty-one subjects did two workouts; one with, and one
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Isokinetic testing protocol-based discharge criteria after anterior ligament reconstruction: A systematic review Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-10-05 Ana Carolina de Jacomo Claudio, Luana Zava Ribeiro da Silva, Laís Gobbo Fonseca, Caroline Coletti de Camargo, Aryane Flauzino Machado, Jessica Kirsch Micheletti, Berlis Ribeiro dos Santos Menossi
BACKGROUND: The return to activities and sports after the anterior cruciate ligament (ACL) reconstruction is a critical decision. OBJECTIVE: To verify the most used elements during the isokinetic evaluation for discharge after ACL reconstruction. METHODS: Systematic review (PROSPERO CRD42021224433). Research in the literature: PubMed, Medline, SciELO, Lilacs, CENTRAL, PEDro, Web of Science and Embase
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High or low volume beetroot juice supplementation might positively affect physical capacity and isokinetic muscle function in power athletes Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-10-13 Hyuk Sakong, Yeong-Hyun Cho, Tae-Beom Seo
BACKGROUND: Beetroot juice is an ergogenic aid containing high levels of nitrate and is known to have many physiological benefits. OBJECTIVE: This study aimed to examine the effects of beetroot juice supplementation on the physical capacity and isokinetic muscle function of power athletes. METHODS:Thirteen power athletes were orally administered three different volumes of beetroot juice: placebo (70
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Effect of kinesio taping and exercise on functional impairment in patients with different degrees of knee osteoarthritis Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-09-15 Waleed S. Mahmoud
BACKGROUND: Kinesio Taping (KT) is used for musculoskeletal problems. KT optimizes and reduces mechanical stresses on soft tissues. However, the benefits of KT and traditional exercises for different severities of knee osteoarthritis (OA) remains controversial. OBJECTIVES: This study aimed to investigate the effects of tension KT and traditional physical therapy on different severities of knee OA.
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The relationship between muscle quality index and physical function in older adults Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-08-21 Andreas Stotz, Joel Mason, Astrid Zech
BACKGROUND: The muscle quality index (MQI) has been proposed as a diagnostic tool to detect individuals at risk of limited physical function. OBJECTIVE: Our goal was to examine the relationship of the MQI with physical function and compare its predictive ability with other muscle parameters of strength and mass in an older population. METHODS: Sixty-eight healthy older adults (34 male, 34 female) aged
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Temporal cross-correlation between Polar® heart rate monitor interface board and ECG to measure RR interval at rest Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-08-21 Wollner Materko, Caio Cesar dos Reis Façanha, Gizelly Coelho Guedes, Marcela Fabiani Silva Dias, Alisson Vieira Costa, Dilson Rodrigues Belfort, Demilto Yamaguchi da Pureza, Alvaro Adolfo Duarte Alberto
BACKGROUND: A Polar heart rate monitor is a device that measures RR intervals, but has not been correlated to accurately measure the series of RR interval signals between the ECG and the Polar® Heart Rate Monitor Interface (HRMI) Board at rest. OBJECTIVE: The aim of the study was to evaluate the temporal cross-correlations between the Polar® HRMI Board and an ECG to measure the series of RR intervals
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Validity of using perceived exertion to assess muscle fatigue during bench press exercise Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-08-21 Hanye Zhao, Dasom Seo, Junichi Okada
BACKGROUND: Muscle fatigue is nearly unavoidable during resistance exercise, yet evaluating it in such circumstances can be challenging. OBJECTIVE: This study aimed to evaluate the validity of using the rating of perceived exertion (RPE) as a measure of muscle fatigue during non-explosive bench press (BP) exercise. METHODS: Fifteen male collegiate athletes participated in three BP tasks set at 65%
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Trunk muscle activity while lifting objects of expected and unexpected weight in normal subjects and patients with low back pain Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-08-03 Chie Sekine, Haruna Hayashi, Ryo Hirabayashi, Hirotake Yokota, Kazusa Saisu, Tomoya Takabayashi, Mutsuaki Edama
BACKGROUND: Lifting heavy objects can induce postural stress and low back pain. OBJECTIVE: This study aimed to examine the effect of object weight expectations on trunk muscle activity and assess trunk muscle activity in people with chronic low back pain. METHODS: Twenty-two male college students (11 healthy and 11 participants with chronic low back pain) were recruited. The procedure was performed
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Electromyographic activity of periscapular muscles in symptomatic people: Does scapular dyskinesis have an impact on it? Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-08-03 Santos de Holanda Laís Regina, Gabriel de Amorim Batista, Oliveira Augusto da Silva Felipe, Ana Carolina Rodarti Pitangui, Rodrigo Cappato de Araújo
BACKGROUND: Scapular dyskinesis (SD) is a modification of the positioning and movement of the scapula and is associated with shoulder pain. Exercises to strengthen the shoulder and scapular muscles have been proposed as a therapeutic strategy to reduce pain and improve function. OBJECTIVE: We aimedto investigate the electromyographic activity of the periscapular and trunk muscles in individuals with
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Impact of differing eccentric-concentric phase durations on muscle damage and anabolic hormones Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-07-31 Fatma Kizilay, Muhammed Emin Kafkas, Mehmet Çağatay Taşkapan, Ali Haydar Demirel, Zsolt Radak
BACKGROUND: Resistance exercises are widely used to enhance muscle hypertrophy. Hypertrophy occurs with effect of mechanical loading, metabolic stress, and muscle damage. The time under tension in eccentric, isometric, and concentric phases of resistance exercises can alter muscle damage and anabolic hormone responses. OBJECTIVES: The aim of the study was to reveal the effect of the time spent in the
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Shoulder rotator strength in judo athletes: A cross-sectional study with different experience levels Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-07-01 Daniele Detanico, Rodrigo Ghedini Gheller, Marina Saldanha Da Silva Athayde, Rafael Lima Kons
BACKGROUND: Judo practice requires high effort from athletes, mainly focused on the upper limbs, involving the shoulder complex. OBJECTIVE: To compare the shoulder internal (IR) and external (ER) rotation peak torque and conventional ratio (ER: IR) between judo athletes from different experience levels (novice vs. advanced) and to verify the distribution of athletes according to the ER: IR ratio classification
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Lower limb strength and training experience in elite and sub-elite female footballers Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-06-08 Ferdia Fallon Verbruggen, Mikuláš Hank, Petr Miřátský, Tomáš Malý, František Zahálka
BACKGROUND: Strength differences between performance levels remain unclear in female football. Furthermore, the relationship between fulltime training and strength has been unexplored despite increased professionalisation in the sport. OBJECTIVE: The aims of this research were to examine knee flexor/extensor and hip adductor/abductor strength differences between elite and sub-elite female footballers
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Isometric hip abduction and adduction strength ratios: A literature review with quantitative synthesis Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-05-29 Jan Marušič, Žiga Kozinc, Vedran Hadžič, Nejc Šarabon
BACKGROUND: Measurements of hip abduction (ABD) and adduction (ADD) are important in strength and conditioning as well as in clinical practice. However, there is no clear consensus on how ABD and ADD compare in strength in different populations. OBJECTIVE: The aim was to perform a quantitative synthesis of comparisons between the isometric strength of ABD and ADD in different populations. METHODS:
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Effect of force adjustment modalities on characteristics for force generation and relaxation Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-05-22 Chiaki Ohtaka, Motoko Fujiwara
BACKGROUND: The systematic characteristics of force generation and relaxation have been investigated using a graded isometric task for several target levels and magnitudes in the upper and lower limb. However, whether a relaxation modality affects the accuracy or speed of grading remains unclear. In addition, speed characteristics are still unclear in both force generation and relaxation modalities
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Effect of a 4-week static stretching program for plantar flexor muscles on physical performance and muscle properties Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-04-14 Sasadai Junpei, Maeda Noriaki, Sakai Shogo, Tashiro Tsubasa, Arima Hitoshi, Urabe Yukio
BACKGROUND: The effects of a long-term static stretching program on physical performance parameters have not been elucidated completely, although the effects on muscle flexibility have a consensus. OBJECTIVE: This study aimed to investigate the effect of a long-term static stretching program on physical performance and muscle properties. METHODS: Participants performed a 2-min static stretching for
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The relationship between jumping, acceleration, change of direction, and relative strength for deadlift and back squat Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-03-23 Junpei Shiba, Rieko Kuramochi
BACKGROUND: Deadlift (DL) and back squat (BSQ) are considered different exercises because of their kinematic and kinetic characteristics. However, there are similarities, such as joint movement and the maximal muscle strength generated. Although there are differences and similarities, it is unclearwhich is more related to athletic performance. OBJECTIVE: This study aimed to determine the relationship
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Comparison of tensiomyographic contractile properties of the knee muscles between endurance and power athletes Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-03-23 Matej Ipavec, Žiga Kukec, Alan Kacin
BACKGROUND: Postactivation potentiation (PAP) enhances contractility of skeletal muscle whereas fatigue deteriorates it. Available evidence suggests that the two phenomena may express differently in endurance and power athletes. OBJECTIVE: To compare the patterns of change in knee muscle contractility induced by PAP and fatigue between endurance and power athletes. METHODS: Eleven endurance and ten
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The importance of gluteal muscle strength in dynamic pelvic stability of fatigued female endurance road runners Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-03-16 Michelle de Meillon, Molly Keegan, Darren Kwong, Andrew Green
BACKGROUND: Recently there has been a rise in female participation in running yet the female population is under-researched in sport specific research. Locally, many female athletes annually compete in numerous ultra-marathons (> 42 km). OBJECTIVE: This study investigated the importance of Glutealmuscle strength in dynamic pelvic stability of fatigued female endurance road runners. METHODS: Fourteen
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Effect of different pelvic-drop exercises on hip muscles activity in patients with gluteus medius weakness Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-03-16 Seung-Min Baik, Ji-Hyun Lee
BACKGROUND: Pelvic-drop exercise (PD) is unilateral weight-bearing exercise that is frequently performed in rehabilitation sessions because its easy application can trigger moderate-to-high gluteus medius (Gmed) activity. Hip rotation has been applied to effectively facilitate Gmed activity duringexercise. OBJECTIVE: To determine the effects of PD with three different hip rotations on Gmed, tensor
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Acute effects of vibration foam rolling on the explosive strength properties of the plantarflexors during maximal isometric contraction Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-03-13 Aleksandar Borisavljević, Filip Kukić, Marko Ćosić, Goran Janković, Milivoj Dopsaj
BACKGROUND: Foam roller with vibration is a recent development and its implementation has not yet been provided with a sufficient scientific justification. Information on whether an implementation of vibration foam rolling for self-massage before the powerful muscular activities is a good strategyis scarce. OBJECTIVE: Therefore, the aim of this study was to determine the acute effects of a single 15-s
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The effects of a structured physiotherapy program on pulmonary function and walking capacity in obese and non-obese adults undergoing cardiac surgery Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-02-20 Mohammad Abu Shaphe
BACKGROUND: Obesity is thought to be a risk factor for cardiopulmonary diseases due to changed pulmonary mechanics. It also drastically lowers functional capability in both males and females. A routine physiotherapy program has been shown to be effective in the prevention and treatment of cardiopulmonary diseases. It also significantly increases functional capacity following coronary artery bypass
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Pitch release speed predictors for division I collegiate baseball players Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-02-09 Zach Farrel, Adam R. Cocco, Elisabeth J. Dichiara, Paul C. Jones, Ben C. Skutnik, Ryan L. Crotin, Ernie Rimer, Pat Ivey, John F. Caruso
BACKGROUND: Analytics, to quantify baseball pitch metrics, take on many forms and are unlike earlier methods to assess performance. OBJECTIVE: Quantify associations of flight kinematic and anthropometric variables on pitch release speed. METHODS: Male college-age pitchers (n= 182) from 2021 Division I games provided data. A 3D radar system collected data. Fixed effects regression OLS models analyzed
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The impact of high intensity interval training on serum omentin-1 levels, lipid profile, and insulin resistance in obese men with type 2 diabetes mellitus Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-02-08 Ahmed S. Ahmed, Marwan S. Ahmed
BACKGROUND: High-intensity interval training (HIIT) is an effective exercise method that could lead to favorable changes in obese and diabetic subjects. OBJECTIVE: To investigate the effects of HIIT on serum omentin-1 levels, lipid profile, and insulin resistance in diabetic obese men. METHODS: Fifty obese men suffering from T2DM with ages between 40 and 60 years were enrolled. Subjects were divided
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The effects of lower extremity muscle strength characteristics on grab and track start performance in young competitive swimmers Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-01-19 Buse Argun, Nevzat Demirci, Gökhan Umutlu
BACKGROUND: Limited data exist regarding segmental contributions of lower extremity muscles to the swim start performance during different start techniques in young swimmers. OBJECTIVE: To determine the differences in the kinematic parameters between the grab start (GS) and track start (TS) techniques and assess the interactions between the lower limb muscle strength and swim start performance. METHODS:
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Altering muscle activity in the lower extremities by bipedal landing with different drop tasks and shoes Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2023-01-20 Yang Yang, Changxiao Yu, Chenhao Yang, Liqin Deng, Weijie Fu
BACKGROUND: The ability of the lower-extremity muscle activation directly affects the performance and in turn interacts with the loading conditions of the muscle itself. However, systematic information concerning the characteristics of lower-extremity muscle during landings is lacking. In particular, the landing height and shoes are also important factors based on the actual situation, which could
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Correlations between one-repetition maximum weights of different back squat depths Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-12-29 Shota Enoki, Junpei Shiba, Taisei Hakozaki, Yuki Suzuki, Kenji Kuzuhara
BACKGROUND: Although squat depth determines the weight that can be lifted while squatting, it is unclear whether the One-repetition maximum (1RM) at one squat depth can be used to estimate the 1RM at another squat depth. OBJECTIVE: To determine the correlations between 1RM weights at different backsquat depths (BSQs) in frequently trained male collegiate athletes. METHODS: This cross-sectional study
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Relationships between isokinetic knee and shoulder peak strength with maximal punch force in boxing athletes Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-12-29 Zixiang Zhou, Chao Chen, Wenjuan Yi, Xin Chen, Weijia Cui, Rui Wu, Dexin Wang
BACKGROUND: Muscle strength in the upper and lower limbs is a major contributing factor to punch force and is one of the keys to success in boxing. OBJECTIVE: This study aimed to investigate the relationship between knee and shoulder strength and punching force in boxers. METHODS: Twenty-one boxerscompleted knee flexion, knee extension, shoulder external rotation and internal rotation isokinetic concentric
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Sex differences in kinematics and quadriceps activity for fast isokinetic knee extension Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-12-28 Jeongwoo Jeon, Dongyeop Lee, Jaeho Yu, Jinseop Kim, Seong-Gil Kim, Jiheon Hong
BACKGROUND: The quantitative recruitment of motor units depends on specific demands, including movement velocity. DNA microarrays differ according to sex, and these sex-related differences affect the fiber type composition. OBJECTIVE: The aim of this study is to demonstrate inter-sex differences inthe isokinetic parameters, isokinetic phases, and muscle activities and to investigate the correlation
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Effects of instability resistance training on static postural control of cognitively impaired older adults Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-12-28 Vinicius Yan Santos Nascimento, Bruno Remígio Cavalcante, Francis Trombini de Souza, Mateus Santos Silva, Dayane Tays da Silva, Mariana Ferreira de Souza, Rodrigo Cappato de Araújo
BACKGROUND: Mounting evidence has demonstrated functional and cognitive-related benefits after Instability Resistance Training (IRT) in individuals, healthy as wellas patients presenting with neurological disorders. However, whether IRT may play a significant role in the postural control of older adults has not been established. OBJECTIVE: To evaluate the effects of 12- weeks of IRT on static postural
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Injury prevention programs including balance exercises with compliance and follow-up reduce the incidence of knee injuries in athletes: A systematic review and meta-analysis Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-12-22 Wesam Saleh A. Al Attar, Hussain Ghulam, Saud Al Arifi, Ahmed I. Alomar, Saad Alhosaini, Sami Alharbi, Yasser Alraddadi, Ross H. Sanders
BACKGROUND: The knee is one of the most common injuries in sports. However, the incidence of knee injuries can be decreased by enhancing balance and neuromuscular control. OBJECTIVE: The aim of this systematic review and meta-analysis was to investigate how injury prevention programs (IPPs) that include balance training influence knee injury rates in athletes. METHODS: Data were obtained from different
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Immediate association of navicular bone height and plantar intrinsic muscle size with toe flexion task: An ultrasound-based study Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-11-18 Honoka Ishihara, Makoto Komiya, Hinata Esaki, Koki Tsuchida, Ayano Ishida, Tsubasa Tashiro, Shogo Tsutsumi, Noriaki Maeda, Yukio Urabe
BACKGROUND: Intrinsic foot muscle (IFM) dysfunction and poor foot arch are associated with various foot conditions. Toe flexor exercise (TFE) has been used to improve it; however, the immediate effects of TFE on each IFM and how it relates to changes in navicular bone height (NH) are unclear. OBJECTIVE: This study aimed to investigate acute muscle swelling in the IFM after TFE and the association between
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Effects of the intensity of interval training on aerobic fitness, body composition and resting metabolic rate of women with overweight or obesity: A randomized trial Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-10-24 Leonardo Vidal Andreato, Andrew Keech, Valmir da Silva, Walker William Francisco, Alexandro Andrade, Felipe Tiburcio Milani, Laura de Souza Genta, Braulio Henrique Magnani Branco
BACKGROUND: Moderate-intensity interval training (MIIT) may be a viable exercise format for improving body composition, aerobic fitness, and health-related variables. OBJECTIVES: This randomized trial aimed to analyze the effect of MIIT or high-intensity interval training (HIIT) on aerobic fitness,body composition variables, and resting metabolic rate (RMR) in women with overweight or obesity. METHODS:
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Local passive heating administered during recovery impairs subsequent isokinetic knee extension exercise performance Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-10-22 Yongling Chang, Xin Liu, Chansol Hurr
BACKGROUND: Passive heating has attracted attention as a potentially promising recovery modality in sports. However, investigations of passive heating have yielded only inconsistent results for exercise performance. OBJECTIVE: To investigate the acute effects of local passive heating administered between repeated bouts of isokinetic exercise. METHODS:The experiment was a randomized crossover study
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Acute effects of local vibration and visual feedback on the pelvic floor muscle training in Japanese healthy adults: A cross-over study Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-10-21 Rami Mizuta, Noriaki Maeda, Makoto Komiya, Honoka Ishihara, Tsubasa Tashiro, Mitsuhiro Yoshimi, Sakura Oda, Yukio Urabe
BACKGROUND: Those undergoing pelvic floor muscle training (PFMT) often experience difficulty in perception; therefore, an easier PFMT method should be devised. OBJECTIVE: To determine the effectiveness of combining PFMT with either vibration stimulation or visual feedback provided by a branded cushion (not a prototype) in increasing PFM muscle activity. Since PFM does not involve large joint movements
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Comparison of the effects of deadlift versus back squat on jumping, acceleration, and change of direction Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-09-28 Junpei Shiba, Rieko Kuramochi, Gaku Tokutake, Shota Enoki, Yuta Nakamura, Yuki Kotoh
BACKGROUND: An advantage that deadlift (DL) has over back squat (BSQ) is that the latter requires additional equipment (i.e., squat rack). Accordingly, if DL can lead to positive effects on jumping, acceleration, and change of direction, DL could present as a more practical training exercise than that of BSQ. OBJECTIVE: This study aimed to compare the effects of DL and BSQ on jumping, acceleration
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Radiological and clinical outcomes of concurrent hamstring stretching with quadriceps strengthening in patients with knee osteoarthritis: A randomized clinical trial Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-09-08 Waleed S. Mahmoud, Ahmed Osailan, Ragab K. Elnaggar, Ali B. Alhailiy
BACKGROUND: Hamstring shortening altered joint reaction forces during activities of daily living (ADL), causing knee pain. Moreover, weak quadriceps may negatively distribute the compressive and shear forces at the knee joint. PURPOSE: The study examined the effect of adding hamstring stretching toquadriceps strengthening exercises on joint space narrowing (JSN), medial joint space width (mJSW), and
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The effect of a single session of isometric handgrip exercise on blood pressure Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-09-08 Wan Mohammad Nazrin Wan Yusof, Wan Nor Syahirah Nasaruddin, Rohayu Hami, Ahmad Munir Che Muhamed, Hazwani Ahmad Yusof
BACKGROUND: It is unknown whether a session of isometric handgrip (IHG) exercise can influence the blood pressure of hypertensive and normotensive individuals. OBJECTIVE: To compare post exercise hypotension among groups with different resting blood pressure (BP) levels. METHODS: 56 Malay male volunteers (12 normotensive, 14 pre-hypertensive, 19 hypertensive stage 1, and 11 hypertensive stage 2) completed
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The effect of two different stretching exercises on the muscle tendon unit and range of motion Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-08-11 Mustafa Kaya, Erkan Gokce, Funda Demırturk
BACKGROUND: Stretching is commonly used for clinical and sports reason but the effects vary on time and the technique used. PURPOSE: To determine the acute effects of static and dynamic stretching of gastrocnemius muscle on muscle-tendon unit (MTU) and dorsiflexion range of motion (ROM) in the sameindividuals; to find out how long the stretching effects endure. METHODS: Twenty-eight males (mean age:
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Differential effects of dynamic and ballistic stretching on contralateral lower limb flexibility Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-07-28 Taisei Inoue, Katsuhito Nagano
BACKGROUND: Dynamic stretching (DS) and ballistic stretching (BS) are similar stretching methods, but the differences between them are unclear. OBJECTIVE: To examine the immediate effects of unilateral hamstring DS and BS on straight leg raise (SLR), knee flexion range of motion (KF-ROM), and KF and knee extension maximal isokinetic peak torque (KF-MIPT and KE-MIPT) of the bilateral limbs. METHODS:
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Time-based effects of different duration stretching on calf muscle strength Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-07-21 Masood Khan, Ahmad H. Alghadir
BACKGROUND: There are conflicting reports on the acute effects of stretching on muscle strength. Some studies report reduction in muscle strength however others report no change following stretching. OBJECTIVE: To assess the acute effects of static stretching (SS) of different durations on the isometric maximum voluntary contraction force (MVCF) of the calf muscle. METHODS: Pretest-posttest experimental
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The relationship between lower limb muscle volume and peak vertical jump power in children Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-07-15 Souhail Bchini, Nadhir Hammami, Nejmeddine Ouerghi, Dalenda Zalleg, Anissa Bouassida
BACKGROUND: Vertical jump is an index representing leg power. It is important to determine factors that influence the vertical jump to help athletes improve their leg power. OBJECTIVE: This study aimed to determine the relationship between lower limbs muscle volume and peak vertical jump (VJ) powerin children for both sexes. METHODS: Fourty children healthy boys (n= 20) and girls (n= 20) aged 10 to
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Relationship between clinical outcome measurements and muscle thickness in cerebral palsy Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-07-15 Wonjun Oh, Chanhee Park
BACKGROUND: The World Health Organization (WHO) uses the International Classification of Functioning, Disability, and Health (ICF) model to provide physical therapy diagnoses and interventions. However, the relationship between clinical assessment and imaging remains unclear. OBJECTIVE: This studyaimed to determine the relationships between body function/structure, activity, and participation outcomes
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Effect of novel diagonal stretching combining trunk rotation and trunk flexion on contralateral knee extension Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-06-24 Wootaek Lim
BACKGROUND: Most previous studies have focused on increasing hamstring flexibility when knee extension range of motion (KE ROM) is restricted. However, it was demonstrated that the tensile force generated in the upper body could be transmitted to the contralateral lower extremity. OBJECTIVE: This study examined the effect of novel diagonal stretching combining trunk rotation and trunk flexion on the
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Trunk muscle activation in side plank exercises with and without external-focus instruction Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-06-24 Koji Murofushi, Tomoki Oshikawa, Hiroshi Akuzawa, Daisuke Yamaguchi, Kenji Hirohata, Hidetaka Furuya, Sho Mitomo, Koji Kaneoka, Kazuyoshi Yagishita
Abstract BACKGROUND: Trunk muscle activity during isometric exercise is altered by external-focus instruction. OBJECTIVE: To check alterations in trunk muscle activity during side plank exercise both with and without instructions to refrain from crushing an item (external-focus instruction method). METHODS: Twenty-one healthy men aged 20–49 participated in this study. Ten trunk muscle activities were
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The effectiveness of injury prevention programs that include core stability exercises in reducing the incidence of knee injury among soccer players: A systematic review and meta-analysis Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-05-26 Wesam Saleh A. Al Attar, Hussain S. Ghulam, Saud Al Arifi, Amirah M. Akkam, Ahmed I. Alomar, Ross H. Sanders
BACKGROUND: The knee is one of the most common sites of injuries among soccer players. The incidence of knee injuries can be reduced by improving the neuromuscular control and core stability. OBJECTIVE: This study aimed to evaluate the effectiveness of injury prevention programs that include core stability exercises in reducing the incidence of knee injuries among soccer players. METHODS: Data were
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The effect of external-focus using a paper balloon on the activity of upper limb and trunk muscles during static and dynamic tasks Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-04-15 Koji Murofushi, Tomoki Oshikawa, Koji Kaneoka, Daisuke Yamaguchi, Kenji Hirohata, Hidetaka Furuya, Sho Mitomo, Hiroshi Akuzawa, Kazuyoshi Yagishita
Abstract BACKGROUND: External focus isometric exercises using a paper balloon can change trunk muscle activation in the chest squeeze; however, it is unknown whether this method affects muscle activities in conventional exercises. OBJECTIVE: To check variations of trunk muscle activity during front plank (static task) and shoulder press (dynamic task) both with and without instruction to avoid crushing
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Block-sequence of plyometric and balance training is superior to the alternating-sequence for enhancing motor function in children with hemiplegic cerebral palsy: A comparative randomized clinical trial Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-04-15 Ragab K. Elnaggar, Reham H. Diab, Mshari Alghadier, Alshimaa R. Azab
BACKGROUND: Postural control deficits are prevalent in children with hemiplegic cerebral palsy (CwHCP). Therefore, the best rehabilitative strategies for remediating these deficits are warranted, which could then enhance function. OBJECTIVE: To examine effects of a block versus an alternating sequence of balance training (BT) and plyometric training (PT) on postural control in CwHCP. METHODS:Forty-eight
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The effects of blood flow restriction resistance training on indices of delayed onset muscle soreness and peak power Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-04-11 Christopher E. Proppe, Paola M. Rivera, Ethan C. Hill, Terry J. Housh, Joshua L. Keller, Cory M. Smith, John Paul V. Anders, Richard J. Schmidt, Glen O. Johnson, Joel T. Cramer
BACKGROUND: Low-load resistance training with blood flow restriction (LL + BFR) attenuated delayed onset muscle soreness (DOMS) under some conditions. OBJECTIVE: The purpose of this study examined the effects of reciprocal concentric-only elbow flexion-extension muscle actions at 30% of peak torqueon indices of DOMS. METHODS: Thirty untrained women (mean ± SD; 22 ± 2.4 years) were randomly assigned
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Coactivation does not contribute to fatigue-induced decreases in torque during reciprocal, isokinetic muscle actions Isokinet. Exerc. Sci. (IF 0.7) Pub Date : 2022-04-01 Tyler J. Neltner, John Paul V. Anders, Robert W. Smith, Jocelyn E. Arnett, Joshua L. Keller, Terry J. Housh, Richard J. Schmidt, Glen O. Johnson
BACKGROUND: Studies of coactivation have typically utilized single movement isometric or isokinetic fatiguing muscle actions. OBJECTIVE: The purpose of the current study was to examine coactivation of the biceps brachii (BB) and triceps brachii (TB) in response to a maximal, reciprocal, isokineticfatiguing task of the forearm flexors and extensors at slow (60∘/s) and moderate (180∘/s) isokinetic velocities