Effects of BodyPump and resistance training with and without a personal trainer on muscle strength and body composition in overweight and obese women—A randomised controlled trial. Issue 6 (November 2017)

• Record Type: Journal Article
• Authors: Rustaden, Anne Mette; Haakstad, Lene A.H.; Paulsen, Gøran; Bø, Kari
• Is Part Of: Obesity research & clinical practice. Volume 11:Issue 6(2017:Nov./Dec.)
• Page Start: 728
• Page End: 739
• Publication Date: 2017-11
• Subjects: Group training -- Strength endurance -- Lean body mass -- Health- and fitness center -- Women; Obesity -- Research -- Periodicals; Obesity -- Treatment -- Periodicals; Obesity -- Periodicals; Obésité -- Recherche -- Périodiques; Obésité -- Traitement -- Périodiques; Obesity -- Research; Obesity -- Treatment; Electronic journals; Periodicals; 616.398
• DOI: 10.1016/j.orcp.2017.03.003
• Languages: English
• ISSNs: 1871-403X

Abstract

Summary: Objectives: Overweight and obese individuals are recommended to perform regular resistance training, and the health- and fitness industry offer several exercise programs with purpose to improve muscle strength and body composition. This randomised controlled trial aimed to compare 12 weeks (45–60 min, 3 sessions/weeks) of popular exercise programs, available at health- and fitness centers worldwide. Methods: Previous untrained women with BMI ≥ 25 were allocated to either BodyPump (a high-repetition group session) (n = 25), individual resistance training with a personal trainer (n = 25), non-supervised individual resistance training (n = 21) and non-exercising control group (n = 21). Primary outcome was one repetition maximum (1RM) in squat and bench press, and secondary outcome was body composition (Inbody720). Results: The BodyPump group did not improve muscle strength, compared to any of the other groups. In 1RM squat, the personal trainer group increased 17% (95% CI 5.1–23.0), 20% (95% CI 7.5–24.8) and 30% (95% CI 15.8–33.0 kg) more than the non-supervised group, BodyPump and controls, respectively. In bench press the personal trainer group increased 10% (95% CI 1.5–7.2) and 16% (95% CI 3.5–9.3 kg) more compared to BodyPump and controls. No difference was found compared to the non-supervised group in bench press. There were no between-group differences in body composition. Conclusion: Twelve weeks of BodyPump did not improve muscle strength in overweight women, but a personal trainer amplified the effects of individual resistance training on maximal strength in squat. None of the intervention groups showed effect in body composition.