Exercise regulation on lower body positive pressure treadmills Does body weight % matter
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Abstract
Purpose: This study examined physiological responses between 70% (70) and 90% (90) body weight at RPE of 4 and 7. Methods: Fifteen college-aged participants completed a VO2peak test followed by two experimental sessions, one at 70 and one at 90. The OMNI pictorial RPE scale was used to select LBBPT velocity and grade (participants were blinded to the treadmill screen) to produce RPEs of 4 and 7 at 70 and 90. Following RPE-based intensity selection four, 5-min running bouts assessed physiological responses. Paired samples t-tests determined whether physiological outcomes differed between 70 and 90 at the same RPE. Cohen’s d were calculated for all dependent variables. Results: No differences were seen in VO2 (p > .05) at both an RPE of 4 (70 = 25.6 ml/kg/min; 90 = 24.8 ml/kg/min) and 7 (70 = 33.3 ml/kg/min; 90 = 32.1 ml/kg/min), HR at RPE of 4 (70 = 144.1bpm; 90 = 149. 5 bpm) and 7 (70 = 164.3bpm; 90 = 163.4bpm), or RER at RPE of 4 (70 = 0.85; 90 = 0.85) and 7 (70 = 0.93; 90 = 0.93). Conclusion: RPE allowed consistent intensity regulation across lower body weight percentages while exercising on a LBPPT.
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