Human Performance Laboratory, University of Calgary, Calgary, AB, Canada, T2N 1N4.
Hum Mov Sci. 2012 Feb;31(1):91-100. doi: 10.1016/j.humov.2011.02.006. Epub 2011 Aug 5.
The influence of golf club stiffness on driving performance is currently unclear, and it is possible that this ambiguity is due in part to golfer adaptation to equipment. The purpose of the current study was to elucidate mechanisms of adaptation to club stiffness, during the golf swing, by employing tendon vibration to distort proprioceptive feedback. Vibration (∼50 Hz, ∼1 mm amplitude) was applied to the upper extremities of 24 golfers using DC motors with eccentric weights. Golfers hit golf balls in a laboratory setting using three clubs of varying shaft stiffness, and club kinematics were recorded using high speed (180 Hz) digital cameras. The results demonstrated significant slowing of the club grip during club release for a high-stiffness shaft with vibration. This suggests that, when proprioceptive feedback is available, players adapt to changes in club stiffness by modifying the release dynamics of the club late in the downswing.
高尔夫球杆硬度对击球表现的影响目前尚不清楚，造成这种模糊性的部分原因可能是球手对器材的适应。本研究的目的是通过使用肌腱振动来改变本体感觉反馈，阐明在高尔夫挥杆过程中适应球杆硬度的机制。使用带有偏心重量的直流电机，将约 50 Hz、约 1 毫米振幅的振动施加到 24 名高尔夫球手的上肢。高尔夫球手在实验室环境中使用三根不同硬度的球杆击球，并使用高速（180 Hz）数字相机记录球杆运动学。结果表明，当有本体感觉反馈时，振动会使高硬度球杆在击球时握把明显减速。这表明，当本体感觉反馈可用时，球员会通过在挥杆下半段改变球杆的释放动力学来适应球杆硬度的变化。
