Adaptations to exercise in compensators and noncompensators in the E-MECHANIC Trial.

Journal of Applied Physiology
S Nicole FearnbachCorby K Martin

Abstract

Rating of perceived exertion (RPE) and respiratory exchange ratio (RER) have previously been associated with acute exercise compensation. This study examined adaptations in the RPE and RER with long-term exercise training in individuals who did (noncompensators) and did not (compensators) lose the expected amount of weight. Participants (n = 110, 71.8% women, means ± SD; age 49 ± 12 yr) completed 24 wk of supervised exercise training at 65-85% V̇o2peak to achieve a prescribed dose of 8 kcal·kg body wt-1·wk-1 (8 KKW) or 20 KKW. Participants were categorized as noncompensators (n = 55) or compensators (n = 55) based on the percent of expected weight loss (%EWL) achieved. Changes in RPE and RER during exercise over time (baseline, week 12, week 24) were compared by weight compensation category. Individual %EWL in relation to RPE, RER, and training intensity (%V̇o2peak) was evaluated over the same time period. RPE and RER for a given workload decreased from baseline to week 12 and stabilized through week 24, regardless of weight compensation (time P < 0.0001). Noncompensators had a higher RPE relative to heart rate, which was partly explained by higher %V̇o2peak. RPE and %V̇o2peak both positively predicted %EWL, independent of age,...Continue Reading

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Citations

Mar 19, 2021·Medicine and Science in Sports and Exercise·James L DorlingCorby K Martin

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Datasets Mentioned

BETA
GM104940

Clinical Trials Mentioned

NCT01264406

Software Mentioned

SPSS
JMP Pro

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