Bentzen Andreas, Jørgensen Stian Langgård, Mortensen Louise, Mechlenburg Inger, Foldager Frederik
Department of Clinical Medicine, Aarhus University, Denmark.
Department of Orthopedic Surgery, Aarhus University Hospital, Denmark.
Int J Sports Phys Ther. 2025 Mar 1;20(3):344-353. doi: 10.26603/001c.129458. eCollection 2025.
Muscle power is an important physical capability across all age groups and health statuses. Typically, assessing lower limb muscle power requires expensive and sophisticated equipment to ensure reliability and validity of power. Hence, there exists a clear need to identify a simple and effective functional performance test that can serve as a proxy for evaluating muscle power when equipment is unavailable. Thus, this study aimed to identify an easily administered, functional performance test to assess unilateral muscle power.
Correlations between maximal leg extensor power (LEP) were measured using the Nottingham Power Rig, and several functional tests (i) unilateral 5-repetition Sit-To-Stand (5STS), (ii) unilateral 30-second Sit-To-Stand (30STS), and (iii) unilateral Hop For Distance (HFD), as well as (iv) self-reported physical activity assessed by the Short Questionnaire to AsseS Health-enhancing physical activity (SQUASH). Pearson's correlation coefficients were calculated between LEP and the functional tests for both legs, as well as self-reported activity, among 52 healthy participants with a mean age of 31.1 years (ranging 19-49 years).
A negligible correlation was found between LEP and SQUASH score. Negligible correlations were found between LEP and unilateral 5STS, unilateral 30STS, and HFD on the dominant leg. Positive low correlations were found between LEP and Unilateral 30STS (r=0.43, p=<0.01) and HFD (r=0.44, p=<0.01) on the non-dominant leg, as well as an inverse low correlation between LEP and unilateral 5STS (-0.42, p=0.01) on the non-dominant leg.
All correlations produced were negligible to low, suggesting that the functional tests investigated in this study may not be indicative of lower limb muscle power.
3b.
肌肉力量是所有年龄组和健康状况下都重要的身体能力。通常，评估下肢肌肉力量需要昂贵且复杂的设备以确保力量测量的可靠性和有效性。因此，明确需要找到一种简单有效的功能表现测试，在没有设备时可作为评估肌肉力量的替代方法。因此，本研究旨在确定一种易于实施的功能表现测试来评估单侧肌肉力量。
使用诺丁汉力量测试装置测量最大伸腿力量（LEP），并进行多项功能测试：（i）单侧5次坐立试验（5STS），（ii）单侧30秒坐立试验（30STS），（iii）单侧跳远（HFD），以及（iv）通过简短健康促进身体活动调查问卷（SQUASH）评估的自我报告身体活动。计算了52名平均年龄31.1岁（年龄范围19 - 49岁）的健康参与者中LEP与双腿功能测试以及自我报告活动之间的Pearson相关系数。
LEP与SQUASH评分之间的相关性可忽略不计。LEP与优势腿的单侧5STS、单侧30STS和HFD之间的相关性可忽略不计。LEP与非优势腿的单侧30STS（r = 0.43，p < 0.01）和HFD（r = 0.44，p < 0.01）之间存在低正相关，LEP与非优势腿的单侧5STS之间存在低负相关（-0.42，p = 0.01）。
所有产生的相关性均为可忽略不计到低水平，表明本研究中调查的功能测试可能无法指示下肢肌肉力量。
3b。
