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Effect of home‐based resistance training performed with or without a high‐speed component in adults with severe obesity

Orange, Samuel T.; Marshall, Phil; Madden, Leigh A.; Vince, Rebecca V.

Authors

Samuel T. Orange

Leigh A. Madden

Abstract

1) To evaluate the effects of walking and home‐based resistance training on function, strength, power, anthropometry and quality of life (QoL) in adults with severe obesity, and 2) to assess whether performing resistance exercises with maximal concentric velocity provides additional benefits compared with traditional slow‐speed resistance training.

Methods
Adults with a body mass index of ≥40 kg/m2 were randomised to slow‐speed strength training (ST; n = 19) or high‐speed power training (PT; n = 19). Both groups completed a walking intervention and home‐based resistance training (2x/week for 6‐months). The PT group performed resistance exercises with maximal intended concentric velocity, whereas the ST group maintained a slow (2‐s) concentric velocity.

Results
At 6‐months, weight loss was ~3 kg in both groups. Both groups significantly improved function (gz = 1.04‐1.93), strength (gz = 0.65‐1.77), power (gz = 0.66‐0.85), contraction velocity (gz = 0.65‐1.12) and QoL (gz = 0.62‐1.54). Between‐group differences in shoulder press velocity (‐0.09 m·s‐1, gs = ‐0.95 [‐1.63, ‐0.28]) and six‐minute walk test (‐16.9 m, gs = ‐0.51 [‐1.16, 0.13]) favoured the PT group.

Conclusions
Home‐based resistance training and walking leads to significant improvements in functional and psychological measures in adults with severe obesity. In addition, considering the between‐group effect sizes and their uncertainty, performing resistance exercises with maximal concentric speed is a simple adjustment to conventional resistance training that yields negligible negative effects but potentially large benefits on walking capacity and upper‐limb contraction velocity.

Journal Article Type Article
Journal Translational Sports Medicine
Print ISSN 2573-8488
Electronic ISSN 2573-8488
Peer Reviewed Peer Reviewed
Institution Citation Orange, S. T., Marshall, P., Madden, L. A., & Vince, R. V. (in press). Effect of home‐based resistance training performed with or without a high‐speed component in adults with severe obesity. Translational Sports Medicine, https://doi.org/10.1002/tsm2.115
DOI https://doi.org/10.1002/tsm2.115
Keywords Exercise; Home-based exercise; Physical function; Power training; Resistance training; Severe obesity
Publisher URL https://onlinelibrary.wiley.com/doi/abs/10.1002/tsm2.115
Additional Information Published: 2019-09-12