Contractile function and motor unit firing rates of the human hamstrings
نویسندگان
چکیده
منابع مشابه
Motor unit firing rates and contractile properties in tibialis anterior of young and old men.
The effects of aging on motoneuron firing rates and muscle contractile properties were studied in tibialis anterior muscle by comparing results from six young (20.8 +/- 0.8 yr) and six old men (82.0 +/- 1.7 yr). For each subject, data were collected from repeated tests over a 2-wk period. Contractile tests included maximal voluntary contraction (MVC) with twitch interpolation and stimulated twi...
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Muscle contractions are modulated by the number of motor units recruited and their respective firing rates. The work described in this report documents an interplay between recruitment and firing rates of motor units. The recruitment of a new motor unit appears to have a disfacilitatory influence on the firing rates of previously activated motor units. It is speculated that this effect is likel...
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Daily preferential use was shown to alter physiological and mechanical properties of skeletal muscle. This study was aimed at revealing differences in the control strategy of muscle pairs in humans who show a clear preference for one hand. We compared the motor unit (MU) recruitment and firing behavior in the first dorsal interosseous (FDI) muscle of both hands in eight male volunteers whose ha...
متن کاملLateral dominance and motor unit firing behavior.
Twelve subjects were classified as left-handed (LH) or right-handed (RH) using Annett's hand dominance classification. Motor unit recordings were obtained from the first dorsal interosseous (FDI) muscle of each hand using a quadrifilar needle electrode. Firing occurrences of individual motor units were then identified and the firing rates of all motor units recorded during the contraction were ...
متن کاملThe Effects of a Resistance Training Program on Average Motor Unit Firing Rates
The purpose of this study was to examine the effects of an 8-week resistance training program on the relationship between average motor unit firing rates and recruitment threshold in the vastus lateralis. Eleven untrained men (mean ± SD age = 22.5 ± 4.2 years) volunteered to perform resistance training three times per week for 8 weeks. At the end of each week during the training, the subjects w...
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ژورنال
عنوان ژورنال: Journal of Neurophysiology
سال: 2017
ISSN: 0022-3077,1522-1598
DOI: 10.1152/jn.00620.2016