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Effects of supplementation with creatine monohydrate and beta-alanine, alone or combined, on repeated sprint performance and physiological parameters in amateur team and racket sport players
Kinesiology ( IF 0.9 ) Pub Date : 2020-01-01 , DOI: 10.26582/k.52.1.15
Anne Delextrat 1 , Nese Targen 2 , Georgina Impson-Davey 1 , Daniel Kapsis 1 , James Bateman 3 , Nicolas Terrados 4 , Julio Calleja- González 5
Affiliation  

The purpose of this study was to compare the combined effects of creatine monohydrate (Cr) and beta-alanine (BA) with their isolated use on performance and physiological parameters during repeated sprint sequences (RSS). Forty-four male (n=34) and female (n=10) amateur team- and racket sport players (25.1±3.1 years; 175.2±9.8 cm; 76.0±10.3 kg; 15.2±6.8% body fat) performed ten repetitions of 6-s sprints with departure every 30 s, before and after a 28-day supplementation period with either Cr (n=11, 5 g.day-1), BA (n=10, 6 g.day-1), combined Cr and BA (n=12, 5 g.day-1 of Cr plus 6g.day-1 of BA) or placebo (11 g.day-1 of rice flour). Peak (PP) and mean power (MP), performance decrement (%Dec), heart rate (HR), blood lactate concentration (LA) and perceived exertion (RPE) were measured. Analyses of variance (ANOVA) were used to determine the effects of groups (Cr, BA, CrBA, P), sprint number (1 to 10), and time (pre- vs. post-supplementation) on all variables. A significant increase in PP was shown in the post- compared to pre-supplementation in Cr (+5.2%) and BA (+5.2%) groups only (p<0.05), and significant decreases in MP in all groups (3.7% to 6.4%, p<0.05), except BA. %Dec was significantly decreased post supplementation in the Cr group only (17.4%, p<0.05). No effects were shown on HR, RPE and LA (p<0.05). These results show no additional benefits of the combination of Cr and BA on RSS performance and suggest that longer sprint or total exercise duration might be necessary to observe benefits of the combined supplementation.

中文翻译:

肌酸一水合物和β-丙氨酸单独或组合补充对业余队和球拍运动运动员重复冲刺成绩和生理参数的影响

这项研究的目的是比较肌酸一水合物(Cr)和β-丙氨酸(BA)的组合效果及其在重复冲刺序列(RSS)中对性能和生理参数的单独使用。四十四名男性(n = 34)和女性(n = 10)业余团队和球拍运动运动员(25.1±3.1岁; 175.2±9.8 cm; 76.0±10.3 kg;体脂15.2±6.8%)进行了十次重复在28天补充期之前和之后每30 s离开6 s冲刺,其中Cr(n = 11,5 g.day-1),BA(n = 10,6 g.day-1)组合Cr和BA(n = 12,5 g.day-1的Cr加6g.day-1的BA)或安慰剂(11 g.day-1的米粉)。测量峰值(PP)和平均功率(MP),性能下降(%Dec),心率(HR),血液乳酸浓度(LA)和感知劳累(RPE)。方差分析(ANOVA)用于确定组(Cr,BA,CrBA,P),冲刺数(1至10)和时间(补充前与补充后)对所有变量的影响。与补充前相比,仅Cr(+ 5.2%)和BA(+ 5.2%)组的PP显着增加(p <0.05),而所有组的MP显着降低(3.7% 6.4%,p <0.05),BA除外。仅Cr组补充后%Dec显着降低(17.4%,p <0.05)。HR,RPE和LA均未见影响(p <0.05)。这些结果表明,Cr和BA的组合不会对RSS性能产生任何其他好处,并且表明可能需要更长的冲刺或总运动时间才能观察到组合补充的好处。后补)上的所有变量。与补充前相比,仅在Cr(+ 5.2%)和BA(+ 5.2%)组中PP显着增加(p <0.05),而在所有组中MP显着降低(3.7%至6.4%,p <0.05),BA除外。仅Cr组补充后%Dec显着降低(17.4%,p <0.05)。HR,RPE和LA均未见影响(p <0.05)。这些结果表明,Cr和BA的组合不会对RSS性能产生任何其他好处,并且表明可能需要更长的冲刺或总运动时间才能观察到组合补充的好处。后补)上的所有变量。与补充前相比,仅Cr(+ 5.2%)和BA(+ 5.2%)组的PP显着增加(p <0.05),而所有组的MP显着降低(3.7% 6.4%,p <0.05),BA除外。仅Cr组补充后%Dec显着降低(17.4%,p <0.05)。HR,RPE和LA均未见影响(p <0.05)。这些结果表明,Cr和BA的组合不会对RSS性能产生任何其他好处,并且表明可能需要更长的冲刺或总运动时间才能观察到组合补充的好处。0.05),BA除外。仅Cr组补充后%Dec显着降低(17.4%,p <0.05)。HR,RPE和LA均未见影响(p <0.05)。这些结果表明,Cr和BA的组合不会对RSS性能产生任何其他好处,并且表明可能需要更长的冲刺或总运动时间才能观察到组合补充的好处。0.05),BA除外。仅Cr组补充后%Dec显着降低(17.4%,p <0.05)。HR,RPE和LA均未见影响(p <0.05)。这些结果表明,Cr和BA的组合不会对RSS性能产生任何其他好处,并且表明可能需要更长的冲刺或总运动时间才能观察到联合补充的好处。
更新日期:2020-01-01
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