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Exercise Supervision Is Important for Cardiometabolic Health Improvements

A 16-Week Randomized Controlled Trial

Hunter, Jayden R.1,2; Gordon, Brett A.3; Bird, Stephen R.2; Benson, Amanda C.2,4

The Journal of Strength & Conditioning Research: February 06, 2019 - Volume Publish Ahead of Print - Issue - p
doi: 10.1519/JSC.0000000000002980
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Hunter, JR, Gordon, BA, Bird, SR, and Benson, AC. Exercise supervision is important for cardiometabolic health improvements: a 16-week randomized controlled trial. J Strength Cond Res XX(X): 000–000, 2019—Exercise supervision enhances health and fitness improvements in clinical populations compared with unsupervised or home-based exercise, but effects of supervision type are unknown in healthy employees. Eighty-five Australian university employees (62 females; mean ± SD 43.2 ± 9.8 years) were randomized to personal (1:1; SUP, n = 28), nonpersonal (typical gym-based; NPS, n = 28) supervision or unsupervised control (CON, n = 29) exercise groups. Subjects received a 16-week individually tailored, moderate-to-high intensity aerobic and resistance exercise program completed at an onsite exercise facility (SUP and NPS) or without access to a specific exercise facility (CON). Repeated-measures ANOVA analyzed changes to cardiometabolic outcomes. Mean ± SD increases to V[Combining Dot Above]O2 peak were greater (p < 0.01) with SUP (+10.4 ± 11.1%) vs. CON (+3.8 ± 8.9%) but not different to NPS (+8.6 ± 8.2%). Compared to CON (+1.7 ± 7.7%), upper-body strength increases were greater with SUP (+12.8 ± 8.4%; p < 0.001) and NPS (+8.4 ± 7.3%; p < 0.05). Lower-body strength increases were greater with SUP (+26.3 ± 12.7%) vs. NPS (+15.0 ± 14.6%; p < 0.05) and CON (+4.1 ± 12.4%; p < 0.001), and NPS vs. CON (p < 0.01). Body fat reductions were greater with SUP (−2.2 ± 2.2%) vs. NPS (−0.6 ± 1.9%; p < 0.05) and CON (−0.7 ± 1.9%; p < 0.05). Access to an onsite exercise facility with personal or nonpersonal exercise supervision was important for improving several cardiometabolic outcomes, with greater improvements to lower-body strength and body composition from personal 1:1 exercise supervision.

1School of Exercise Science, Sport and Health, Charles Sturt University, New South Wales, Australia;

2Discipline of Exercise Sciences, School of Health and Biomedical Sciences, RMIT University, Victoria, Australia;

3Discipline of Exercise Physiology, La Trobe Rural Health School, La Trobe University, Victoria, Australia; and

4Department of Health and Medical Sciences, Swinburne University of Technology, Victoria, Australia

Address correspondence to Dr. Jayden R. Hunter, jhunter@csu.edu.au.

Copyright © 2019 by the National Strength & Conditioning Association.