Immediate Effects of Acupuncture on Explosive Force Production and Stiffness in Male Knee Joint

Jun Wang, I-Lin Wang, Rui Hu, Shun Yao, Yu Su, Shu Zhou and Che-Hsiu Chen
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Jun Wang: Graduate Institute, Jilin Sports University, Freedom Road, No. 2476, Nanguan District, Changchun 130022, China
I-Lin Wang: College of Physical Education, Hubei Normal University, Huangshi 435002, China
Rui Hu: Graduate Institute, Jilin Sports University, Freedom Road, No. 2476, Nanguan District, Changchun 130022, China
Shun Yao: Graduate Institute, Jilin Sports University, Freedom Road, No. 2476, Nanguan District, Changchun 130022, China
Yu Su: Graduate Institute, Jilin Sports University, Freedom Road, No. 2476, Nanguan District, Changchun 130022, China
Shu Zhou: College of Physical Education, Hubei Normal University, Huangshi 435002, China
Che-Hsiu Chen: Department of Sport Performance, National Taiwan University of Sport, Taichung City 41354, Taiwan

IJERPH, 2021, vol. 18, issue 18, 1-11

Abstract: Acupuncture can improve explosive force production and affect joint stiffness by affecting muscle activation levels. This study aims to explore the effects of true acupuncture (TA) compared with sham acupuncture (SA) on the explosive force production and stiffness of the knee joint in healthy male subjects. Twenty subjects were randomly divided into the TA group ( n = 10) and SA group ( n = 10) to complete isokinetic movement of the right knee joint at a speed of 240°/s before and after acupuncture. Futu (ST32), Liangqiu (ST34), Zusanli (ST36), Xuehai (SP10), and Chengshan (BL57) were selected for acupuncture. The intervention of SA is that needles with a blunt tip were pushed against the skin, giving an illusion of insertion. The results showed that acupuncture and the intervention time had a significant interaction effect on knee joint explosive force and joint stiffness ( p < 0.05). The average maximum (max) torque, average work, average power, average peak power and total work of the TA group increased significantly after acupuncture ( p < 0.05), while the SA group did not ( p > 0.05). Therefore, true acupuncture can immediately improve the explosive force and joint stiffness of the male knee joint by inducing post-activation potentiation (PAP) and/or De-Qi.

Keywords: sham acupuncture; acupoints; isokinetic test; PAP (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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