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Leg strength comparison between younger and middle-age adults
International Journal of Industrial Ergonomics ( IF 2.5 ) Pub Date : 2010-05-01 , DOI: 10.1016/j.ergon.2009.11.003
Sukwon Kim 1 , Thurmon Lockhart , Chang S Nam
Affiliation  

Although a risk of occupational musculoskeletal diseases has been identified with age-related strength degradation, strength measures from working group are somewhat sparse. This is especially true for the lower extremity strength measures in dynamic conditions (i.e., isokinetic). The objective of this study was to quantify the lower extremity muscle strength characteristics of three age groups (young, middle, and the elderly). Total of 42 subjects participated in the study: 14 subjects for each age group. A commercial dynamometer was used to evaluate isokinetic and isometric strength at ankle and knee joints. 2 × 2 (Age group (younger, middle-age, and older adult groups) × Gender (male and female)) between-subject design and Post-hoc analysis were performed to evaluate strength differences among three age groups. Post-hoc analysis indicated that, overall, middle-age workers' leg strengths (i.e. ankle and knee muscles) were significantly different from younger adults while middle-age workers' leg strengths were virtually identical to older adults' leg strengths. These results suggested that, overall, 14 middle-age workers in the present study could be at a higher risk of musculoskeletal injuries. Future studies looking at the likelihood of musculoskeletal injuries at different work places and from different working postures at various age levels should be required to validate the current findings. The future study would be a valuable asset in finding intervention strategies such that middle-age workers could stay healthier longer.

中文翻译:

中青年腿部力量对比

虽然职业性肌肉骨骼疾病的风险已被确定为与年龄相关的力量下降,但工作组的力量测量却有些稀少。对于动态条件下的下肢力量测量(即等速运动)尤其如此。本研究的目的是量化三个年龄组(青年、中年和老年)的下肢肌肉力量特征。共有 42 名受试者参与了该研究:每个年龄组 14 名受试者。使用商用测力计评估踝关节和膝关节的等速和等长强度。进行了 2 × 2(年龄组(青年、中年和老年组)×性别(男性和女性))之间的受试者设计和事后分析以评估三个年龄组之间的强度差异。事后分析表明,总体而言,中年工人的腿部力量(即脚踝和膝盖肌肉)与年轻人明显不同,而中年工人的腿部力量与老年人的腿部力量几乎相同。这些结果表明,总体而言,本研究中的 14 名中年工人可能面临更高的肌肉骨骼损伤风险。未来的研究应该着眼于不同工作场所和不同年龄水平的不同工作姿势的肌肉骨骼损伤的可能性,以验证当前的发现。未来的研究将是寻找干预策略的宝贵资产,以便中年工人可以更长时间地保持健康。脚踝和膝盖肌肉)与年轻人明显不同,而中年工人的腿部力量与老年人的腿部力量几乎相同。这些结果表明,总体而言,本研究中的 14 名中年工人可能面临更高的肌肉骨骼损伤风险。未来的研究应该着眼于不同工作场所和不同年龄水平的不同工作姿势的肌肉骨骼损伤的可能性,以验证当前的发现。未来的研究将是寻找干预策略的宝贵资产,以便中年工人可以更长时间地保持健康。脚踝和膝盖肌肉)与年轻人明显不同,而中年工人的腿部力量与老年人的腿部力量几乎相同。这些结果表明,总体而言,本研究中的 14 名中年工人可能面临更高的肌肉骨骼损伤风险。未来的研究应该着眼于不同工作场所和不同年龄水平的不同工作姿势的肌肉骨骼损伤的可能性,以验证当前的发现。未来的研究将是寻找干预策略的宝贵资产,以便中年工人可以更长时间地保持健康。本研究中的 14 名中年工人可能面临更高的肌肉骨骼损伤风险。未来的研究应该着眼于不同工作场所和不同年龄水平的不同工作姿势的肌肉骨骼损伤的可能性,以验证当前的发现。未来的研究将是寻找干预策略的宝贵资产,以便中年工人可以更长时间地保持健康。本研究中的 14 名中年工人可能面临更高的肌肉骨骼损伤风险。未来的研究应该着眼于不同工作场所和不同年龄水平的不同工作姿势的肌肉骨骼损伤的可能性,以验证当前的发现。未来的研究将是寻找干预策略的宝贵资产,以便中年工人可以更长时间地保持健康。
更新日期:2010-05-01
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