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Titolo:
Randomized trial of progressive resistance training to counteract the myopathy of chronic heart failure
Autore:
Pu, CT; Johnson, MT; Forman, DE; Hausdorff, JM; Roubenoff, R; Foldvari, M; Fielding, RA; Singh, MAF;
Indirizzi:
Tufts Univ, Human Nutr Res Ctr Aging, Jean Mayer USDA, Nutr Exercise Physiol & Sarcopenia Lab, Boston, MA 02111 USA Tufts Univ Boston MA USA 02111 iol & Sarcopenia Lab, Boston, MA 02111 USA Harvard Univ, Sch Med, Div Aging, Brockton W Roxbury Vet Affairs Med Ctr, Boston, MA 02132 USA Harvard Univ Boston MA USA 02132 et Affairs Med Ctr, Boston, MA 02132 USA Harvard Univ, Sch Med, Div Aging, Hebrew Rehabil Ctr Aged, Boston, MA 02131 USA Harvard Univ Boston MA USA 02131 w Rehabil Ctr Aged, Boston, MA 02131 USA Boston Univ, Sargeant Coll Hlth Rehabil Sci, Dept Hlth Sci, Boston, MA USABoston Univ Boston MA USA lth Rehabil Sci, Dept Hlth Sci, Boston, MA USA Boston Univ, Dept Cardiol, Boston, MA USA Boston Univ Boston MA USABoston Univ, Dept Cardiol, Boston, MA USA Beth Israel Deaconess Hosp, Gerontol Div, Boston, MA 02115 USA Beth IsraelDeaconess Hosp Boston MA USA 02115 Div, Boston, MA 02115 USA Univ Sydney, Sch Exercise & Sport Sci, Sydney, NSW 2141, Australia Univ Sydney Sydney NSW Australia 2141 rt Sci, Sydney, NSW 2141, Australia
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 6, volume: 90, anno: 2001,
pagine: 2341 - 2350
SICI:
8750-7587(200106)90:6<2341:RTOPRT>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
SKELETAL-MUSCLE FUNCTION; QUALITY-OF-LIFE; EXERCISE PERFORMANCE; HEMODYNAMIC-RESPONSES; SENSITIVE METHOD; CAPACITY; METABOLISM; ENDURANCE; TOLERANCE; PROGRAM;
Keywords:
exercise; aging; type I fibers;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
71
Recensione:
Indirizzi per estratti:
Indirizzo: Singh, MAF Tufts Univ, Human Nutr Res Ctr Aging, Jean Mayer USDA, Nutr Exercise Physiol & Sarcopenia Lab, 711 Washington St, Boston, MA 02111 USA Tufts Univ 711 Washington St Boston MA USA 02111 , MA 02111 USA
Citazione:
C.T. Pu et al., "Randomized trial of progressive resistance training to counteract the myopathy of chronic heart failure", J APP PHYSL, 90(6), 2001, pp. 2341-2350

Abstract

Chronic heart failure (CHF) is characterized by a skeletal muscle myopathynot optimally addressed by current treatment paradigms or aerobic exercise. Sixteen older women with CHF were compared with 80 age-matched peers without CHF and randomized to progressive resistance training or control stretching exercises for 10 wk. Women with CHF had significantly lower muscle strength (P < 0.0001) but comparable aerobic capacity to women without CHF. Exercise training was well tolerated and resulted in no changes in resting cardiac indexes in CHF patients. Strength improved by an average of 43.4 +/- 8.8% in resistance trainers vs. -1.7 +/- 2.8% in controls (P = 0.001), muscle endurance by 299 +/- 66% vs. 1 +/- 3% (P = 0.001), and 6-min walk distance by 49 +/- 14 m (13%) vs. -3 +/- 19 m (-3%) (P = 0.03). Increases in typeI fiber area (9.5 +/- 16%) and citrate synthase activity (35 +/- 21%) in skeletal muscle were independently predictive of improved 6-min walk distance (r(2) = 0.78; P = 0.0024). High-intensity progressive resistance trainingimproves impaired skeletal muscle characteristics and overall exercise performance in older women with CHF. These gains are largely explained by skeletal muscle and not resting cardiac adaptations.

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Documento generato il 18/01/20 alle ore 21:27:09