2014 S3: Jessica Janecke

Effects of Weight Support on the Metabolic Demands of Running

Running velocity and weight support affect the metabolic demands of running. To supplement training or when people may not be able to run safely at their full body weight (BW) due to injury, harness systems and water immersion to support BW during running has been previously used to allow individuals to continue or return to running. Another option is a lower-body positive-pressure weight support system known as the Alter-G anti-gravity treadmill. The Alter-G is more effective than the other training options due to its similarities to normal running. To date, no studies have investigated the effects of changes in BW and running velocity on the metabolic demand of running. Testing for this study includes subjects completing a series of progressive faster run intervals at fixed percentages BW starting at 70% and increasing to 100% while expired gases are continuously collected. Preliminary data indicates a direct relationship between decreased body weight and decreased metabolic demand.

Faculty Mentor: Kyle Barnes, Movement Science

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