engleski

Camparison of work efficiency and muscule activity for two all-out rowing tests

The purpose of this case study was to compare the unique pattern of race pacing used in competitive rowing with a seemingly more efficient ever pace pattern. An elite oarsman performed the 6 min "all-out" test on a Concept II rowing ergometer simulating the workload pattern applied during the race, and repeated the test after two day rest, with constant workload equalling the mean power output in the first test. Spiroergometric data (power output, stroke cadence, HR, VE, VO2, oxygen debt) were recorded during the test and recovery, as were surface myoelectric signals from m. rectus femoris, m. vastus lateralis, m. vastus medialis and m. erector spinae. The results suggest thet the physiological pattern of race pacing used in competitive rowing is more advantageous not for the higher contribution of the aerobic and the anaerobic energy systems, but due to a higher eficiency. The EMG findings suggest that the recorded muscles during rowing ergometry do not respond as a unit with regard to neuromuscular fatigue patterns. It is possible that the development of neuromuscular fatigue during sinulated rowing is mediated primarily by the vastus lateralis muscle.

rowing ; work efficiency ; all-out tests ; elektromyography ; muscle fatugue

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