Measurements of deep temperature in muscle are conducted by means of microwave radiothermometer which allow one to separate contributions of different intramuscle processes: that of the contractile system, bloodflow, heat production due to metabolic processes during muscle work. The efficiency coefficient of the contractile system is not less than 33%, bloodflow and metabolism induce equal temperature increase. A mathematical model is proposed to calculate from noninvasive experimental data the blood flow dynamics during and after different muscle loads.
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