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( James F. Hokanson ),( Allison Schumann ),( Casey Austin ) 한국체육학회 2020 International journal of human movement science Vol.14 No.1
Lower body positive pressure treadmills (LBPPT) are beneficial for rehabilitation and exercise training. Running on a LBPP treadmill (AlterG<sup>TM</sup>) involves sealing the lower half of the body in a high air pressure flexible sealed chamber to simulate exercise at lower body weight. The effects of the sealed chamber on treadmill and tympanic temperature during exercise have yet to be investigated. The purpose of the study was to measure treadmill and tympanic temperatures while participants were running on a normal treadmill and compare temperatures to running on a LBPP treadmill. Fifteen well-trained runners completed three running trials on a LBPP treadmill at 60, 75, and 85% of body weight (BW). A 100% BW trial was run on a normal treadmill. Participants ran at three steady state speeds (2.9, 3.4, and 3.8 m·s<sup>-1</sup>) for four minutes each. Room air, tympanic, and LBPPT chamber temperatures (°C) were recorded. The main finding was that treadmill temperature was significantly greater among the three BW conditions on the LBPPT compared to normal treadmill (average of all LBPPT, 30.7 ± 2.3°C, normal treadmill, 22.5 ± 2.1°C). Tympanic temperatures were not different between all BW conditions. Runners may use LBPPT for rehabilitation or low-impact training yet should be aware of the increase in LBPP chamber temperature.
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