Transverse forces in skeletal muscle with massage-like loading in a rabbit model

BMC Complementary and Alternative Medicine

Yi Zhao³  Lawrence Charles¹  Caroline Haas³  Scott K Crawford³  Thomas M Best² 

[1] Division of Sports Medicine, Department of Family Medicine, The Ohio State University, Columbus, Ohio, USA;Sports Health and Performance Institute, The Ohio State University, Columbus, Ohio, USA;Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA

关键词: Eccentric exercise;    Injury;    Muscle;    Massage;   

Others  :  1086076
DOI  :  10.1186/1472-6882-14-393

 received in 2013-10-01, accepted in 2014-10-07,  发布年份 2014

【 摘 要 】

Background

The objective of this study was to quantify the transverse forces in skeletal muscle subjected to constant compressive massage-like loading (MLL) following eccentric exercise (ECC).

Methods

Twenty-eight New Zealand White rabbits were used for this two-part study. For all testing, a customized electromechanical device was utilized to apply a constant compressive force MLL to the tibialis anterior (TA) muscle and the resultant transverse forces were quantified. The device consisted of two stepper motors that were positioned orthogonally to each other and connected to separate sliding tracks. A stainless steel cylindrical massage tip was mounted to a customized two-axis sensor consisting of two strain gauges with which forces along the two axes were measured. First, we determined the effects of tissue loading frequency and compression magnitude on transverse forces in the TA. Following a bout of ECC, sixteen rabbits were randomly assigned to a protocol with MLL frequency of 0.25 Hz or 0.5 Hz at a constant compressive force of 5 N or 10 N. Secondly, we utilized a protocol of 0.5 Hz, 10 N, 15 min MLL that was performed on 4 consecutive days commencing immediately post ECC (n = 6 animals) or 48 hours following ECC (n = 6 animals). Transverse forces were measured during all 4 MLL sessions for the entire 15 min duration for both the immediate and the delayed groups.

Results

Both frequency and magnitude of compressive force due to MLL showed an effect on the magnitude of transverse force (p < 0.05 for each parameter). Furthermore, MLL beginning immediately following ECC produced higher transverse forces than MLL delayed by 48 hours with an average 20% difference between the two MLL groups over the four day protocol. Forces were higher in the middle 5 minutes compared to the first 5 minutes for all MLL bouts in both groups.

Conclusions

Frequency and magnitude of MLL and timing for delivery of MLL following ECC affect resultant transverse force values for exercised muscle. The application of our findings to humans receiving massage following exercise remains unknown at this time.

【 授权许可】

   
2014 Best et al.; licensee BioMed Central Ltd.

【 图 表 】

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