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Can Changes In Running Biomechanics Under Body Weight Support Conditions Lead To Improvements In Aerobic And Anaerobic Energy Capacities?, Shernice A. Thomas, Christopher J. Arellano
Can Changes In Running Biomechanics Under Body Weight Support Conditions Lead To Improvements In Aerobic And Anaerobic Energy Capacities?, Shernice A. Thomas, Christopher J. Arellano
International Journal of Exercise Science: Conference Proceedings
During the ground contact phase of running, muscles in the lower limb are required to generate force to support body weight which is the most energy-demanding task during running. We are interested in understanding how running mechanics change when we reduce the need for body weight support and how these effects determine maximal metabolic power at top speed. PURPOSE: We aim to determine the biomechanical determinants that underlie peak metabolic power during body weight (BW)-supported running. METHODS: Twenty-five healthy young adults (age 18-36, M/F, BMI < 30.0) who are experienced runners will be recruited for this study. Subjects will complete a graded exercise test to determine their peak metabolic power output at 100% BW at 75% BW. During each trial, subjects’ rates of expired oxygen and carbon dioxide, stance and leg swing times, rating of perceived exertion (RPE), and heart rate will be recorded. RESULTS: Our preliminary findings show that similar peak metabolic power output values, at top speeds, …
Running Economy Strongly Related To Ground Contact Time Imbalances, Aaron D. Piper, Erica G. Knowles, Nicholas A. Guerra, Eric J. Jones, Dustin P. Joubert
Running Economy Strongly Related To Ground Contact Time Imbalances, Aaron D. Piper, Erica G. Knowles, Nicholas A. Guerra, Eric J. Jones, Dustin P. Joubert
International Journal of Exercise Science: Conference Proceedings
Running economy (RE) can be defined as the oxygen consumption or caloric unit cost required to move at a specific velocity. In addition to a runner’s maximal oxygen uptake (VO2max) and lactate threshold (LT), RE is a key endurance performance determinant. Better RE is advantageous as it represents the ability to run at a lower relative percentage of VO2max at a given speed and reduces the rate of energy depletion. Ground contact time (GCT) has been associated with RE, however it has not been established how GCT imbalances between feet impact economy. Purpose: Determine the relationship between cadence, GCT, and …