期刊
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
卷 25, 期 7, 页码 1911-1917出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1519/JSC.0b013e318220d8dc
关键词
Sechenov phenomenon; torque; percent decline; distraction
Stock, MS, Beck, TW, and DeFreitas, JM. The effects of diverting activities on recovery from fatiguing concentric isokinetic muscle actions. J Strength Cond Res 25(7): 1911-1917, 2011-The purpose of this study was to examine the effects of diverting activities on recovery from fatiguing concentric isokinetic muscle actions. On 3 separate occasions, 11 men (mean +/- SD age = 22.2 +/- 1.5 years) and 8 women (mean +/- SD age = 22.2 +/- 2.1 years) performed 2 bouts of 50 consecutive maximal concentric isokinetic muscle actions of the dominant leg extensors. Between these bouts, the subjects either performed math problems (mental diverting activity), contralateral dynamic constant external resistance (DCER) leg extensions (physical diverting activity), or rested quietly (control). For each trial, the peak torque data from the first and second bouts of 50 muscle actions served as the pretest (Pre) and posttest (Post) data, respectively. The results indicated that when the subjects rested quietly or performed contralateral DCER leg extensions between the fatiguing bouts, the initial peak torque values observed for Post were significantly less than those for Pre. When the subjects performed math problems, however, no decline in the initial peak torque values was observed, thus indicating better recovery. In addition, a decline in the average torque values was observed from Pre to Post for the control trial but not for the math problem or contralateral exercise trials. No differences were observed among the trials for final peak torque, percent decline, or the linear slope of the decline in peak torque. These findings demonstrated that performing either mental or physical diverting activities after fatiguing isokinetic muscle actions enhanced recovery.
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