Knee extensor strength, activation, and size in very elderly people following strength training
作者： Stephen D.R. Harridge , Ann Kryger , Anders Stensgaard
DOI: 10.1002/(SICI)1097-4598(199907)22:7<831::AID-MUS4>3.0.CO;2-3
关键词: Elderly people 、 Muscle contraction 、 Physical exercise 、 Strength training 、 Psychology 、 Isometric exercise 、 Magnetic resonance imaging 、 Ankle 、 Knee extensors 、 Physical medicine and rehabilitation
摘要: Muscle strength, activation, and size were studied in 11 very elderly subjects (8 women 3 men; age range, 85–97 years) who completed 12 weeks of strength training the knee extensor muscles. Training increased maximum amount weight that could be lifted once (134%; P < 0.05) voluntary isometric measured as both force recorded at ankle with flexed 90° (17%, ns) torque 60° (37%; 0.05). Anatomical lean quadriceps cross-sectional area (LCSA) midthigh using magnetic resonance imaging from 27.5 ± 9.6 cm2 to 30.2 10.0 (9.8%; after training. Both before training, was closely related LCSA, but resulted no significant change muscle per unit muscle. Using twitch interpolation technique, activation during a maximal contraction shown incomplete all (ranging 69% 93%) not significantly An increase skeletal mass may have important functional metabolic benefits for people. © 1999 John Wiley & Sons, Inc. Nerve 22: 831–839,
sci-hub.se 参考文章(28)
A. Y. Belanger, A. J. McComas, Extent of motor unit activation during effort Journal of Applied Physiology. ,vol. 51, pp. 1131- 1135 ,(1981) , 10.1152/JAPPL.1981.51.5.1131
S. Sipila, H. Suominen, Effects of strength and endurance training on thigh and leg muscle mass and composition in elderly women Journal of Applied Physiology. ,vol. 78, pp. 334- 340 ,(1995) , 10.1152/JAPPL.1995.78.1.334
Young Men, Archie Young, Maria Stokes, Morgan Crowe, The size and strength of the quadriceps muscles of old Clinical Physiology. ,vol. 5, pp. 145- 154 ,(1985) , 10.1111/J.1475-097X.1985.TB00590.X
S C Gandevia, G M Allen, J E Butler, J L Taylor, Supraspinal factors in human muscle fatigue: evidence for suboptimal output from the motor cortex. The Journal of Physiology. ,vol. 490, pp. 529- 536 ,(1996) , 10.1113/JPHYSIOL.1996.SP021164
P. A. Merton, Voluntary strength and fatigue The Journal of Physiology. ,vol. 123, pp. 553- 564 ,(1954) , 10.1113/JPHYSIOL.1954.SP005070
J. Lexell, D. Y. Downham, Y. Larsson, E. Bruhn, B. Morsing, Heavy-resistance training in older Scandinavian men and women: short- and long-term effects on arm and leg muscles. Scandinavian Journal of Medicine & Science in Sports. ,vol. 5, pp. 329- 341 ,(2007) , 10.1111/J.1600-0838.1995.TB00055.X
P. M. B�low, J. N�rregaard, B. Danneskiold-Sams�el, J. Mehlsen, Twitch interpolation technique in testing of maximal muscle strength: influence of potentiation, force level, stimulus intensity and preload. European Journal of Applied Physiology. ,vol. 67, pp. 462- 466 ,(1993) , 10.1007/BF00376464
Dawn A. Skelton, Archie Young, Carolyn A. Greig, Katie E. Malbut, Effects of Resistance Training on Strength, Power, and Selected Functional Abilities of Women Aged 75 and Older Journal of the American Geriatrics Society. ,vol. 43, pp. 1081- 1087 ,(1995) , 10.1111/J.1532-5415.1995.TB07004.X
M. V. Narici, G. S. Roi, L. Landoni, A. E. Minetti, P. Cerretelli, Changes in force, cross-sectional area and neural activation during strength training and detraining of the human quadriceps European Journal of Applied Physiology. ,vol. 59, pp. 310- 319 ,(1989) , 10.1007/BF02388334
D. A. Jones, O. M. Rutherford, D. F. Parker, PHYSIOLOGICAL CHANGES IN SKELETAL MUSCLE AS A RESULT OF STRENGTH TRAINING Quarterly Journal of Experimental Physiology. ,vol. 74, pp. 233- 256 ,(1989) , 10.1113/EXPPHYSIOL.1989.SP003268