Adaptations in muscular activation of the knee extensor muscles with strength training in young and older adults

The purpose of this study was to compare the extent of muscular activation during maximal voluntary knee extension contractions in old and young individuals and to examine the effects of resistance training on muscular activation in each group. The interpolated twitch technique was used to estimate...

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Bibliographic Details
Published in:Journal of electromyography and kinesiology 2001-12, Vol.11 (6), p.405-412
Main Authors: Knight, C.A., Kamen, G.
Format: Article
Language:English
Subjects:
Adult
Age Factors
Aged
Aged, 80 and over
Aging
Analysis of Variance
Electromyography
Exercise - physiology
Female
Humans
Interpolated twitch
Isometric Contraction - physiology
Knee - physiology
Male
Motor unit
Muscle Contraction - physiology
Muscle, Skeletal - physiology
Resistance exercise
Torque
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Summary:The purpose of this study was to compare the extent of muscular activation during maximal voluntary knee extension contractions in old and young individuals and to examine the effects of resistance training on muscular activation in each group. The interpolated twitch technique was used to estimate muscular activation during two pre-training baseline tests, and after two and six weeks of resistance training. Throughout the study, the older group was 30% less strong than the young group ( p=0.02). The training protocol was effective in both groups with overall isometric strength gains of 30 and 36% in the older ( p=0.01) and young ( p
ISSN:1050-6411
1873-5711
DOI:10.1016/S1050-6411(01)00023-2