The effect of different resistance training with and without blood flow restriction on CAF, P3NP and physical function in elderly women
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Authors
1دانشجوی دکتری فیزیولوژی ورزش دانشگاه حکیم سبزواری
2استاد دانشکده علوم ورزشی دانشگاه حکیم سبزواری
3استادیار دانشکده علوم ورزشی دانشگاه حکیم سبزواری
Abstract
Introduction: previous studies have shown the effectiveness of exercise training with blood flow restriction on muscle function, but the effect of this type of training on the biochemical marker of the neuromuscular junction and muscle remodeling have not been investigated. So, the purpose of this study was the comparison of the effect of three different programs on the serum concentrations of CAF, P3NP, muscle strength and muscle endurance in elderly women.
Methodology: In the present research, 40 women with mean age of 62±3 yr. were selected. The subjects were randomly divided into four groups, including strength training with blood flow restriction (BFR, n=10), strength training without blood flow restriction (ST, n=10), traditional training (TT, n=9), and control (n=9). The strength training was included seven exercises in trunk, upper and lower body. In BFR training were performed under blood occlusion using an elastic practical band. In BFR and ST exercises performed until volitional fatigue, while in TT exercise performed 8-12 repetitions. Training consisted of 10-week and three sessions per week. Blood sampling and physical function tests were taken before and after the training period.
Results: The results showed the significant increase of muscle strength in the lower extremity, upper extremity, handgrip, and functional mobility in three training groups, while there was no significant difference among them. None of the training protocols had a significant effect on plasma levels of CAF and P3NP.
Discussion: Based on this research, strength training with or without blood flow restriction until fatigue and traditional strength training have the similar effect on muscle function in elderly women. Also, serum concentrations of CAF and P3NP were not affected by these training protocols. So, elderly women could adopt low-intensity strength training until fatigue to gain improvement muscle function. More research is needed to clarify which type of resistance training can modulate the CAF and P3NP concentration in elderly women.
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