Forte Roberta, Macaluso Andrea
Istituto Universitario di Scienze Motorie di Roma, Rome, Italy.
J Sports Sci. 2008 Nov;26(13):1431-6. doi: 10.1080/02640410802208994.
The aim of the study was to assess the relationship between performance-based and laboratory tests for muscular strength and power assessment in older women. Thirty-two women aged 68.8 +/- 2.8 years were recruited. All participants were asessed for: (a) two performance-based tests--the box-stepping test (mean 296 +/- 51 J) and two-revolution maximum test (mean 7.1 +/- 2 kg) performed while pedalling on a cycle ergometer; and (b) muscular function tests--maximal instantaneous peak power jumping on a force platform (mean 1528 +/- 279 W); maximal voluntary contraction (MVC) during knee extension (mean 601 +/- 571 N) and leg press (mean 626 +/- 126 N), and leg press power (mean 483 +/- 98 W) on a dynamometer. Using univariate analysis, performance-based tests were compared with laboratory muscle strength and power measurements. Muscle power correlated most strongly with the performance-based tests for both jumping and leg press power (r-values between 0.67 and 0.75; P < 0.01). The correlation with muscle strength measures ranged between 0.48 and 0.61 (P < 0.01). The proposed tests may have particular relevance in geriatric and rehabilitation environments as they represent an easy, practical, and inexpensive alternative for the assessment of muscular strength and power.
本研究的目的是评估老年女性基于表现的测试与用于肌肉力量和功率评估的实验室测试之间的关系。招募了32名年龄在68.8±2.8岁的女性。所有参与者都接受了以下评估：(a) 两项基于表现的测试——在自行车测力计上蹬踏时进行的箱式踏步测试（平均296±51焦耳）和两圈最大测试（平均7.1±2千克）；以及 (b) 肌肉功能测试——在测力平台上进行的最大瞬时峰值功率跳跃（平均1528±279瓦）；膝关节伸展过程中的最大自主收缩（MVC）（平均601±571牛）和腿部推举（平均626±126牛），以及在测力计上的腿部推举功率（平均483±98瓦）。使用单变量分析，将基于表现的测试与实验室肌肉力量和功率测量进行比较。肌肉功率与跳跃和腿部推举功率的基于表现的测试相关性最强（r值在0.67至0.75之间；P<0.01）。与肌肉力量测量的相关性在0.48至0.61之间（P<0.01）。所提出的测试在老年病学和康复环境中可能具有特殊的相关性，因为它们代表了一种简单、实用且廉价的肌肉力量和功率评估替代方法。
