title: Comparison of strength development with resistance training and combined exercise training in type 2 diabetes.
abstract: Resistance training has been shown to increase strength in type 2 diabetes; however, it is unclear if combining resistance and aerobic training (A + R) impedes strength development compared with resistance training only (R). The purpose of this study was to compare changes in strength with A + R vs R in individuals with type 2 diabetes. We evaluated monthly workload increments in participants from the Diabetes Aerobic and Resistance Exercise clinical trial. Muscular strength was assessed through training volumes and as the eight repetition maximum (8-RM) at 0, 3, and 6 months. Both groups increased their upper and lower body volumes monthly for 6 months. The relative increase in upper body workload in R was significantly greater than A + R at 4 months (161 ± 11% vs 127 ± 11%, P = 0.009) and at 6 months of training (177 ± 11% vs 132 ± 11%, P = 0.008). Both groups had improvements in 8-RM workloads at 3 and 6 months. The resistance training group had a significantly greater improvement in 8-RM on the leg press at 6 months compared with A + R (80 ± 11% vs 58 ± 8%, P = 0.045). Both R and A + R improved strength with a 6-month training program; however, increases in strength may be greater with resistance training alone compared with performing both aerobic and resistance training.
authors.affiliation: School of Human Kinetics, Human and Environmental Physiology Research Unit, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: J
authors.initials: J
authors.lastname: Larose
authors.forename: R J
authors.initials: RJ
authors.lastname: Sigal
authors.forename: F
authors.initials: F
authors.lastname: Khandwala
authors.forename: G P
authors.initials: GP
authors.lastname: Kenny
mesh_terms: D003924:Diabetes Mellitus, Type 2 / Q000534:rehabilitation*; D005081:Exercise Therapy / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D053580:Muscle Strength; D010809:Physical Fitness; D055070:Resistance Training / Q000379:methods*; D016896:Treatment Outcome