OBJECTIVE: To determine the effect of a resistance-training program on walking endurance in a healthy, community-dwelling elderly population. DESIGN: 12- week randomized, controlled trial comparing a resistance- training group with a nonexercising control group. SETTING: Hospital-affiliated outpatient exercise facility. PATIENTS: 24 healthy men and women who were 65 years of age or older (mean age +/-SD, 70.4 +/- 4 years; range, 65 to 79 years). MEASUREMENTS: The primary outcome variable was exhaustive submaximal walking time measured at an intensity of 80% of baseline peak aerobic capacity. RESULTS: Participants in the resistance-training program increased submaximal walking endurance by 9 minutes (from 25 +/- 4 minutes to 34 +/- 9 minutes; P=0.001), a 38% increase, whereas no change was seen in controls (20 +/- 5 minutes to 19 +/- 10 minutes; P greater than 0.2; P=0.005 between groups). The relation between change in leg strength and change in walking endurance was significant (r=0.48; P=0.02). Neither group showed a change in peak aerobic capacity or in whole-body composition, although fat-free mass of the leg increased in the exercise group. CONCLUSIONS:Resistance training for 3 months improves both leg strength and walking endurance in healthy, community-dwelling elderly persons. This finding is relevant to older persons at risk for disability, because walking endurance and leg strength are important components of physical functioning.
RCT Entities:
OBJECTIVE: To determine the effect of a resistance-training program on walking endurance in a healthy, community-dwelling elderly population. DESIGN: 12- week randomized, controlled trial comparing a resistance- training group with a nonexercising control group. SETTING: Hospital-affiliated outpatient exercise facility. PATIENTS: 24 healthy men and women who were 65 years of age or older (mean age +/-SD, 70.4 +/- 4 years; range, 65 to 79 years). MEASUREMENTS: The primary outcome variable was exhaustive submaximal walking time measured at an intensity of 80% of baseline peak aerobic capacity. RESULTS:Participants in the resistance-training program increased submaximal walking endurance by 9 minutes (from 25 +/- 4 minutes to 34 +/- 9 minutes; P=0.001), a 38% increase, whereas no change was seen in controls (20 +/- 5 minutes to 19 +/- 10 minutes; P greater than 0.2; P=0.005 between groups). The relation between change in leg strength and change in walking endurance was significant (r=0.48; P=0.02). Neither group showed a change in peak aerobic capacity or in whole-body composition, although fat-free mass of the leg increased in the exercise group. CONCLUSIONS: Resistance training for 3 months improves both leg strength and walking endurance in healthy, community-dwelling elderly persons. This finding is relevant to older persons at risk for disability, because walking endurance and leg strength are important components of physical functioning.
Authors: Edward M Phillips; Jeffrey Katula; Michael E Miller; Michael P Walkup; Jennifer S Brach; Abby C King; W Jack Rejeski; Tim Church; Roger A Fielding Journal: J Aging Phys Act Date: 2010-01 Impact factor: 1.961
Authors: Brian A Irving; Ian R Lanza; Gregory C Henderson; Rajesh R Rao; Bruce M Spiegelman; K Sreekumaran Nair Journal: J Clin Endocrinol Metab Date: 2015-01-19 Impact factor: 5.958