BACKGROUND The extent of muscle deterioration associated with ageing or disease can be quantified by comparison with appropriate reference data. The objective of this study is to present normative data for lower-limb muscle strength and quality for 573 males and 923 females aged 20-97 yr participating in the Geelong Osteoporosis Study in southeastern Australia. METHODS In this cross-sectional study, measures of muscle strength for hip flexors and hip abductors were obtained using a Nicholas manual muscle tester, a hand-held dynamometer (HHD; kg). Leg lean mass was measured by dual energy x-ray absorptiometry (DXA; kg), and muscle quality calculated as strength/mass (N/kg). RESULTS For both sexes, muscle strength and quality decreased with advancing age. Age explained 12.9-25.3% of the variance in muscle strength in males, and 20.8-24.6% in females; age explained less of the variance in muscle quality. Means and standard deviations for muscle strength and quality for each muscle group are reported by age-decade for each sex, and cutpoints equivalent to T-scores of - 2.0 and - 1.0 were derived using data from young males (n = 89) and females (n = 148) aged 20-39 years. CONCLUSIONS These data will be useful for quantifying the extent of dynapenia and poor muscle quality among adults in the general population in the face of frailty, sarcopenia and other age-related muscle dysfunction.

中文翻译：

---

下肢肌肉力量：基于观察性人群研究的标准数据。

背景技术与衰老或疾病相关的肌肉退化的程度可以通过与适当的参考数据进行比较来量化。这项研究的目的是提供参与澳大利亚东南部吉朗骨质疏松研究的573名男性和923名20-97岁女性的下肢肌肉力量和质量的规范数据。方法在这项横断面研究中，使用Nicholas手动肌力测试仪（手持测功机，HHD； kg）获得了髋屈肌和髋外展肌的肌力测量值。通过双能X线骨密度仪（DXA; kg）测量瘦腿质量，并以力量/质量（N / kg）计算肌肉质量。结果对于男女，肌肉强度和质量都随着年龄的增长而下降。年龄解释了男性肌肉力量差异的12.9-25.3％，以及20.8-24。女性6％；年龄解释的肌肉质量差异较小。每种性别的年龄段都报告了每个肌肉群的肌肉力量和质量的平均值和标准差，并且使用年轻男性（n = 89）和女性的数据得出了等于T分数-2.0和-1.0的临界点。 （n = 148）年龄在20-39岁之间。结论这些数据将有助于量化面对脆弱，肌肉减少症和其他与年龄相关的肌肉功能障碍的成年人中成年人的运动障碍和肌肉质量差的程度。使用年龄在20-39岁之间的年轻男性（n = 89）和女性（n = 148）的数据得出0。结论这些数据将有助于量化面对脆弱，肌肉减少症和其他与年龄相关的肌肉功能障碍的成年人中成年人的运动障碍和肌肉质量差的程度。使用年龄在20-39岁之间的年轻男性（n = 89）和女性（n = 148）的数据得出0。结论这些数据将有助于量化面对脆弱，肌肉减少症和其他与年龄相关的肌肉功能障碍的成年人中成年人的运动障碍和肌肉质量差的程度。