title: Impact of energy restriction with or without resistance training on energy metabolism in overweight and obese postmenopausal women:  a Montreal Ottawa New Emerging Team group study.
abstract: OBJECTIVE
  The present study measured the impact of adding resistance training to an energy-restricted diet on the components of energy expenditure in overweight or obese postmenopausal women.
  
  
  METHODS
  Participants (n = 137) were randomly divided into two groups: (1) a diet and resistance training (DRT) group and (2) a diet-only (DO) group. Women followed a 6-month energy-restricted diet consisting of 2,100 to 3,360 kJ less than daily needs. The DRT group also followed a resistance training program (three times a week). Resting energy expenditure (REE) was measured by indirect calorimetry. Total energy expenditure was measured with doubly labeled water. Body composition was measured by dual-energy x-ray absorptiometry.
  
  
  RESULTS
  Eighty nine women were included in the analyses for this study (DRT, n = 21; DO, n = 68). REE in both groups was significantly lower after the intervention (mean difference ± SD: DO, -0.26 ± 0.4 MJ d; DRT, -0.33 ± 0.4 MJ d; P ≤ 0.05). Relative REE, expressed per kilogram of lean body mass corrected for fat mass change, remained stable in both groups. Physical activity energy expenditure remained stable in both groups (mean difference ± SD: DO, 0.02 ± 1 MJ d, P = 0.91; DRT, -0.14 ± 1 MJ d, P = 0.64).
  
  
  CONCLUSIONS
  Adding resistance training to an energy-restricted diet does not significantly alter any compartment of energy expenditure. REE is lower owing to reduction in body composition compartments, but relative REE is not significantly altered.
authors.affiliation: Departments of Kinesiology, Université de Montréal, Montreal, QC, Canada.
authors.forename: Maxime
authors.initials: M
authors.lastname: St-Onge
authors.forename: Rémi
authors.initials: R
authors.lastname: Rabasa-Lhoret
authors.forename: Irene
authors.initials: I
authors.lastname: Strychar
authors.forename: May
authors.initials: M
authors.lastname: Faraj
authors.forename: Éric
authors.initials: É
authors.lastname: Doucet
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Lavoie
mesh_terms: D015502:Absorptiometry, Photon; D001823:Body Composition; D031204:Caloric Restriction; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009765:Obesity / Q000628:therapy*; D050177:Overweight / Q000628:therapy*; D017698:Postmenopause; D055070:Resistance Training; D012146:Rest; D015431:Weight Loss