International Journal of Applied Science and Technology

ISSN 2221-0997 (Print), 2221-1004 (Online) 10.30845/ijast

Physiological Responses to the AlterG Anti-Gravity Treadmill
Michael A. Figueroa, James Manning, Patricia Escamilla

Abstract
The purpose of this study was to determine whether there would be any significant differences in metabolic work when jogging to maximal aerobic capacity on an anti-gravity treadmill, using differential air pressure, at different percentages of body weight (100%, 90% and 80%). Data were collected on 10 subjects (5 males, 5 females). Absolute VO2max values (L/min) were significantly different between, but not within genders, at each percent of body weight. Relative VO2max (ml/kg/min), RER values and substrate utilization were not significantly different between 100%, 90% or 80%. Removal of up to 20% bodyweight did not show to alter metabolic responses (VO2, HR, RER) during jogging. Prescribed cardiovascular training intensities can be achieved with a reduction in ground reaction forces in individuals who are overweight, obese or injured. This weight-assisted device may be an effective alternative during rehabilitation or recovery after an event in order to maintain cardiovascular fitness.

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