Impact of resistance training with or without caloric restriction on physical capacity in obese older women.
OBJECTIVE
To investigate the specific impact of resistance training (RT) with or without caloric restriction (CR) on physical capacity in obese older women.


METHODS
Forty-eight postmenopausal obese women, physically independent and between the ages of 55 and 75 years were recruited. The women were randomly assigned to one of four groups (1: RT [n = 12], 2: CR [n = 12], 3: CR + RT [n = 12], or 4: control group [C; n = 12]) for 3 months. CR and CR + RT groups participated in a weekly group session on nutrition, and RT and CR + RT groups took part in a resistance training program. Physical capacity was measured with 11 different performance tests. A global physical capacity score (range, 0-44) was then computed using quartiles of each test. Body composition was measured by dual-energy x-ray absorptiometry.


RESULTS
Body weight, total fat mass, percentage of fat mass, and body mass index (kg/m) significantly decreased in the CR and CR + RT groups (P < 0.01), whereas only the CR group showed a significant decrease in lean body mass (P < 0.05) after the 3-month program. The global physical capacity score significantly improved in the RT group (10.0 +/- 8.8%; P < 0.01), compared with the C group after 3 months.


CONCLUSIONS
Overall, the 3-month RT program alone had a greater effect on physical capacity than CR or CR + RT. Thus, a 3-month RT could help prevent long-term decreases in physical capacity in obese older women.
Bouchard
Danielle R
DR
Health and Social Services Centre, Sherbrooke University Institute of Geriatrics, Faculty of Physical Education and Sports, University of Sherbrooke, Québec, Canada.
Soucy
Lisa
L
Sénéchal
Martin
M
Dionne
Isabelle J
IJ
Brochu
Martin
M
D000368:Aged; D001823:Body Composition; D015992:Body Mass Index; D031204:Caloric Restriction; D004040:Dietary Carbohydrates / Q000008:administration & dosage; D004041:Dietary Fats / Q000008:administration & dosage; D004044:Dietary Proteins / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007537:Isometric Contraction; D008875:Middle Aged; D053580:Muscle Strength; D009765:Obesity / Q000503:physiopathology* / Q000628:therapy*; D010809:Physical Fitness; D017698:Postmenopause; D055070:Resistance Training; D015431:Weight Loss
D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins