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Reliability of methods to measure energy expenditure during and after resistance exercise.

08:00 EDT 12th April 2019 | BioPortfolio

Summary of "Reliability of methods to measure energy expenditure during and after resistance exercise."

The primary purpose of this study was to assess the reliability of three methods estimating energy expenditure (EE) during and in response to resistance exercise. Methods: Ten males (29.4 ± 10.2 yr) with ≥ two months resistance training (RT) experience performed three training sessions incorporating the bench press and back-squat, sessions were separated by 48 to 72 hours. Total energy expenditure (TEE) was estimated using a Suunto T6D Heart Rate Monitor, and two methods (named "Scott" and "Magosso") that used oxygen uptake and blood lactate measurements to determine aerobic and anaerobic energy expenditure (AnEE). Results: For TEE, relative reliability for both the Scott and Magosso methods remained 'nearly perfect' across all testing days for the bench press and back-squat; with interclass correlations (ICC) > 0.93 and TEM% below 5.8%. The heart rate method showed moderate variability between testing days for both exercises; ICC's ranging between 0.66-0.92 with TEM% between 18-37% during the bench press and 11-17% during the back-squat. The estimation of AnEE showed that the Scott and Magosso methods had a 'strong' to 'very strong' relative reliability for both exercises, however, a low absolute reliability was observed. Mean EE was significantly higher in the Scott and Magosso methods during the bench press > 912kJ and back-squat >1170kJ, with the heart rate method estimating 358kJ and 416kJ. • The Scott and Magosso methods showed a high degree of reliability between testing days when measuring EE. • Heart rate methods may significantly underestimate EE during and in response to RT.

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This article was published in the following journal.

Name: Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme
ISSN: 1715-5320
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