Title

Aerobic Energy Expenditure: Overshoot in Recovery

Document Type

Conference Proceeding

Publication Date

6-4-2011

Publication Title

Medicine & Science in Sports & Exercise

Abstract

Ischemia is associated with an overshoot in oxygen uptake (VO2) above exercise VO2 levels. Resistance training is often intense enough to promote ischemia in working skeletal muscles. PURPOSE: To determine if an overshoot of VO2 occurs in the excess post-exercise oxygen consumption (EPOC) period. METHODS: Subject's lifted at 70% of a one repetition maximum for five repetitions. Gas exchange was measured at rest, during exercise and in EPOC. Lifting and recovery times also were recorded. RESULTS: After three sets of five repetitions, preliminary data collected in a breath-by-breath format shows that resting VO2 values immediately prior to lifting were 7.3± 2.2 ml/kg/min. The lifting period lasted for 23.5± 5.3 seconds with a final VO2 recorded at 9.5± 3.1 ml/kg/min. Peak EPOC was at 15.5± 3.0 ml/kg/min, occurring 37.5± 25.1 seconds after completion of exercise. CONCLUSION: Unlike aerobic exercise where EPOC exponentially plummets, resistance training EPOC appears to rise in recovery.

Comments

© 2011 American College of Sports Medicine

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