Prognostic potential of cyclic work tests in closed power loopt
PhD, Professor V.A. Vishnevsky1
PhD, Associate Professor V.V. Apokin1
1Surgut State University, Surgut
Our prior studies to rate benefits of the cyclic work tests in closed power loops found that the isometric-acceleration load growth phase line angle depends on the individual adaptability, vegetative balance and muscular tissues; whilst the isometric-acceleration load fall phase line angle basically depends on the individual aerobic capacities. The hysteresis loop square was found to reflect the all-round working capacity, control systems performance and energy costs of the bodily functions. The study was designed to analyze the age-, initial-power- and muscular-activity-specific data obtainable from the hysteresis loop for the cyclic work in closed power loop. The cycle ergometer probes found the isometric-acceleration load fall phase angle (characteristic of the individual metabolic processes) being significantly lower in the males – apparently due to the larger muscular mass (47.20±4.62 versus 41.31±6.53%, p<0.05). The hysteresis loop square (S) characteristic of the bodily internal functionality was tested lower in females – that may be attributed to the higher conservativeness of a female body under the same HR. The isometric-acceleration load fall phase angle indicative of the metabolic process rehabilitation speed was found gender-unspecific – as well as the maximal oxygen consumption rate (50.99±10.36 and 51.97±13.03 ml/kg/min, p>0.05). The initial power was found to cause insignificant effect on the hysteresis loop parameters, with the absolute load growth and fall angles in the cycle ergometer and run tests tested virtually the same. The hysteresis loop square (S) in the cycle ergometer test was found to correlate both with the first (r=0.455, p<0.01) and second (r=0.561, p<0.01) version of the run test.
Keywords: cyclic work in closed power loop, hysteresis loop.
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