The effects of varying load and repetition speed on energy expenditure during squats

Samuel T Barrett; Bryce Hastings; Jinger S Gottschall

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The effects of varying load and repetition speed on energy expenditure during squats

Journal article

Open access

Peer reviewed

The effects of varying load and repetition speed on energy expenditure during squats

Samuel T Barrett, Bryce Hastings and Jinger S Gottschall

Journal of Fitness Research, Vol.4(1), pp.21-27

2015

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Abstract

Human Movement and Sports Science

caloric expenditure

physical fitness

resistance training

heart beat

squat

physical training

conditioning

Research

Introduction: A leading topic of interest in the health, fitness and wellness industry is how to maximise energy and thereby caloric expenditure in the shortest amount of time through physical activity. The goal of this study was to identify a resistance training (RT) protocol that appeals to these two demands using the traditional squat. Methods: Fifteen participants completed four separate exercise protocols in a randomised order . Each protocol was devised with the same amount of work (force x distance) for 4 minutes using either a 20 kg, 15 kg, 10 kg, or 5 kg load at a contraction speed of 4, 3, 2, or 1 second(s) respectively. In short, we collected heart rate data and estimated energy expenditure differences between heavier load with slower repetitions and lighter load with faster repetitions. Results: The mean physical activity energy expenditure (PAEE), calculated in kcals, was 29.3% greater during the lighter 5 kg condition with faster repetitions compared to the heavier 20 kg condition with slower repetitions. The average and maximum heart rate (HR) recordings exhibited the same trend. Conclusion: PAEE can be maximised with faster repetitions using a light to moderate weight.

Details

Title: The effects of varying load and repetition speed on energy expenditure during squats
Authors: Samuel T Barrett (Author) - Pennsylvania State University, United States
Bryce Hastings (Author) - Les Mills International, New Zealand
Jinger S Gottschall (Author) - Pennsylvania State University, United States
Publication details: Journal of Fitness Research, Vol.4(1), pp.21-27
Publisher: Australian Institute of Fitness
Date published: 2015
ISSN: 2201-5655; 2201-5655
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99449314402621
Output Type: Journal article
Research Statement: false

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