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nEAR-InFRARED MOnITORInG OF THE LUMBAR ERECTOR SPInAE MUSCLE In HEALTHY MEn AnD WOMEn DURInG STATIC AnD DYnAMIC EnDURAnCE WORK

引用

Journal of Innovative Optical Health Sciences 2011年第2期4卷 173-182页

作者： RAMMOHAn V.MAIKALA yagesh n.bhambhaniy Liberty Mutual Research Institute for Safety 71 Frankland Road HopkintonMA 01748USA Faculty of Rehabilitation Medicine University of Alberta Edmonton Alberta T6G 2G4Canada

Understanding muscle hemodynamics using near-infrared spectroscopy is increasingly evident in the recent spinal disorders-related ***,none of these human studies addressed the issue of physiological limits for the lumbar muscle within the same participants during various exercise *** purpose of this study is to evaluate physiological limits for the lumbar muscle during dynamic and static endurance *** three separate days,22 healthy men and women performed three endurance protocols(static prone trunk extension,arm cranking,and pushingpulling)until volitional *** each protocol,minimum and maximum oxygenation and blood volume responses from the right lumbar erector spinae were obtained using a continuous dual wavelength near-infrared spectroscopy(Micro-Runman,nIM Inc.,PA,USA).Statistical analysis showed that greatest reduction in oxygenation(minimum)were obtained during dynamic exercises:pushingpulling(2.1 times)and arm cranking(2.03 times)versus static test (Pnge(calculated as the difference between maximum during recovery and minimum at the point of volitional exhaustion)during static test was lower[(66-75%for oxygenation)and(34-46%for blood volume)]than dynamic exercises (Pntrary to the theory that sufficient occlusion of bloodflow to the lumbar muscle is possible with static trunk extension,it was concluded that a dynamic protocol until volitional exhaustion might be a good alternative in establishing near-infrared spectroscopy-derived physiological limits to the lumbar *** research is essential to identify an optimal calibration procedure for establishing true hypoxic values for the human lumbar muscle.

关键词： Arm cranking back muscle endurance gender differences oxygenation and blood volume pushingpulling Sorensen test

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