期刊
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
卷 39, 期 2, 页码 220-226出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1249/01.mss.0000246989.48729.39
关键词
chronic obstructive pulmonary disease; skeletal muscle; rate of force development; exercise; efficiency
资金
- NHLBI NIH HHS [HL-17731] Funding Source: Medline
HOFF, J., A. E. TJONNA, S. STEINSHAMN, M. HOYDAL, R. S. RICHARDSON, and J. HELGERUD. Maximal Strength Training of the Legs in COPD: A Therapy for Mechanical Inefficiency. Med. Sci. Sports Exerc., Vol. 39, No. 2, pp. 220-226, 2007. Purpose: A diminished mechanical efficiency (work/02 consumed) accompanies chronic obstructive pulmonary disease (COPD), and increased mechanical efficiency has been attained by maximal strength training (MST) with an emphasis on the maximal rate of force mobilization in the concentric phase in healthy subjects. This study combined these observations and evaluated the impact of short-term MST on patients with COPD. Methods: Twelve patients with COPD (FEV1 = 1.1 +/- 0.1) were pretested and then randomly assigned to either an MST group (N = 6) or a normal activity control group (N = 6). Within each MST training session (three times per week for 8 wk), patients performed four sets of seated leg presses with a focus on the rate of force development at an intensity that only allowed the performance of five repetitions. Results: Patients who performed MST significantly improved their rate of force development (105 +/- 22.8%), mechanical efficiency (32 +/- 7%), and FEV1 (21.5 +/- 6.8%), whereas these variables were unchanged in the controls. Neither group changed either peak oxygen consumption (VO2peak) or body mass. Conclusion: In combination with the observed improvement in FEV1, these data certainly support the therapeutic role for MST in the treatment of COPD.
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