Heavy resistance training increases muscle size, strength and physical function in elderly male COPD-patients--a pilot study.
This study investigated the effects of heavy resistance training in elderly males with chronic obstructive pulmonary disease (COPD). 18 Home-dwelling male patients (age range: 65-80 years), with a mean forced expiratory volume in the first second (FEV1) of 46 +/- 3.4% of predicted value, were recruited. Baseline and post-training assessments included: Cross-sectional area (CSA) of quadriceps assessed by MRI, isometric and isokinetic knee extension strength, isometric trunk strength, leg extension power, normal and maximal gait-speed on a 30 m track, stair climbing time, number of chair stands in 30 s, lung function (FEV1) and self-reported health. Subjects were randomized to a resistance training group (RE, n = 9) or a control group conducting breathing exercises (CON, n = 9). RE performed heavy progressive resistance training twice a week for 12 weeks. 6 RE and 7 CON completed the study. In RE the following improved (P < 0.05): Quadriceps CSA: 4%, isometric knee extension strength: 14%, isokinetic knee extension strength at 60 degrees /s.: 18%, leg extension power: 19%, maximal gait speed: 14%, stair climbing time: 17%, isometric trunk flexion: 5% and self-reported health. In CON no changes were found. In conclusion, 12 weeks of heavy resistance training twice a week resulted in significant improvements in muscle size, knee extension strength, leg extension power, functional performance and self-reported health in elderly male COPD patients.
Institute of Sports Medicine, Bispebjerg Hospital, Bispebjerg Bakke 23, Copenhagen, Denmark. mads.kongsgaard@get2net.dk
M
M
Kongsgaard
V
V
Backer
K
K
Jørgensen
M
M
Kjaer
N
N
Beyer
D000368:Aged; D000369:Aged, 80 and over; D005081:Exercise Therapy / Q000379:methods*; D005541:Forced Expiratory Volume / Q000502:physiology; D016330:Frail Elderly; D005684:Gait / Q000502:physiology; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000033:anatomy & histology* / Q000502:physiology; D010865:Pilot Projects; D029424:Pulmonary Disease, Chronic Obstructive / Q000473:pathology / Q000503:physiopathology / Q000534:rehabilitation*