Mandalidis Dimitris, O'Brien Moira
Department of Anatomy, Trinity College Dublin, Ireland.
J Bodyw Mov Ther. 2010 Jan;14(1):19-26. doi: 10.1016/j.jbmt.2008.05.001.
The purpose of this study was to examine the relationship between hand-grip (HG) isometric strength and isokinetic moment of the shoulder musculature in 18 healthy male volunteers. HG isometric strength at 0 degrees , 90 degrees and 180 degrees of shoulder flexion and isokinetic peak and average concentric moments of the shoulder rotators and abductors and the elbow flexors at 60 degrees s(-1) were measured on both the dominant and non-dominant sides. Pearson correlation coefficients revealed statistically significant positive relationships between HG isometric strength and isokinetic moments of the shoulder external rotators (r=0.40-0.54), the shoulder abductors (r=0.42-0.71) and the elbow flexors (r=0.45-0.66) regardless of hand dominance. The positive relationships between HG isometric strength and isokinetic strength of the shoulder stabilisers was probably attributed to mechanisms providing stability to the elbow and shoulder joints either by force transmission via myotendinous and myofascial pathways or by "overflow" of muscular activity via neural circuits. The results of the present findings suggested that HG isometric strength can be used to monitor isokinetic strength of certain muscle groups contributing to the stability of the shoulder joint; however, HG strength may account only for approximately 16-50% of the variability in isokinetic strength of these muscle groups.
本研究的目的是在18名健康男性志愿者中，检验握力（HG）等长肌力与肩部肌肉等速力矩之间的关系。测量了优势侧和非优势侧在肩部屈曲0度、90度和180度时的HG等长肌力，以及在60度/秒时肩部旋转肌、外展肌和肘部屈肌的等速峰值和平均向心力矩。皮尔逊相关系数显示，无论手的优势情况如何，HG等长肌力与肩部外旋肌（r = 0.40 - 0.54）、肩部外展肌（r = 0.42 - 0.71）和肘部屈肌（r = 0.45 - 0.66）的等速力矩之间存在统计学上显著的正相关关系。HG等长肌力与肩部稳定肌等速肌力之间的正相关关系可能归因于通过肌腱和肌筋膜途径进行力传递或通过神经回路进行肌肉活动“溢出”，从而为肘部和肩关节提供稳定性的机制。本研究结果表明，HG等长肌力可用于监测有助于肩关节稳定的某些肌肉群的等速肌力；然而，HG肌力可能仅占这些肌肉群等速肌力变异性的约16 - 50%。
