Abstract
In the present study, we examined the relationships between muscle volume and joint torque for the elbow flexors and extensors in young and elderly individuals, with the aim of evaluating age effects on these relationships. The participants were 45 young (27 men and 18 women aged 20-37 years) and 51 elderly (19 men and 32 women aged 60-77 years) individuals. The joint torques developed during isometric maximal voluntary elbow flexion and extension were measured using a torque meter. The muscle volumes of the elbow flexors and extensors were determined by magnetic resonance imaging. For the elbow flexors, joint torque was significantly correlated with muscle volume in both young and elderly individuals (r = 0.564-0.872). There were also significant correlations between muscle volume and joint torque for the elbow extensors in elderly men and women as well as in young men and women (r = 0.715-0.826). None of the y-intercepts of the regression lines between muscle volume and joint torque were significantly different from zero. Furthermore, no significant age or gender effects on the joint torque per muscle volume of the elbow flexors and extensors were observed. The present results suggest that muscle volume is a main determinant of joint torque regardless of age and gender, for both muscle groups.
| Original language | English |
|---|---|
| Pages (from-to) | 277-282 |
| Number of pages | 6 |
| Journal | European Journal of Sport Science |
| Volume | 11 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2011 Jul |
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Keywords
- Joint torque
- Magnetic resonance imaging
- Maximal isometric contraction
- Muscle volume
ASJC Scopus subject areas
- Physical Therapy, Sports Therapy and Rehabilitation
- Orthopedics and Sports Medicine
Cite this
Size-strength relationships of the elbow flexors and extensors are not affected by age or gender. / Akagi, Ryota; Takai, Yohei; Ohta, Megumi; Kanehisa, Hiroaki; Fukunaga, Tetsuo; Kawakami, Yasuo.
In: European Journal of Sport Science, Vol. 11, No. 4, 07.2011, p. 277-282.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Size-strength relationships of the elbow flexors and extensors are not affected by age or gender
AU - Akagi, Ryota
AU - Takai, Yohei
AU - Ohta, Megumi
AU - Kanehisa, Hiroaki
AU - Fukunaga, Tetsuo
AU - Kawakami, Yasuo
PY - 2011/7
Y1 - 2011/7
N2 - In the present study, we examined the relationships between muscle volume and joint torque for the elbow flexors and extensors in young and elderly individuals, with the aim of evaluating age effects on these relationships. The participants were 45 young (27 men and 18 women aged 20-37 years) and 51 elderly (19 men and 32 women aged 60-77 years) individuals. The joint torques developed during isometric maximal voluntary elbow flexion and extension were measured using a torque meter. The muscle volumes of the elbow flexors and extensors were determined by magnetic resonance imaging. For the elbow flexors, joint torque was significantly correlated with muscle volume in both young and elderly individuals (r = 0.564-0.872). There were also significant correlations between muscle volume and joint torque for the elbow extensors in elderly men and women as well as in young men and women (r = 0.715-0.826). None of the y-intercepts of the regression lines between muscle volume and joint torque were significantly different from zero. Furthermore, no significant age or gender effects on the joint torque per muscle volume of the elbow flexors and extensors were observed. The present results suggest that muscle volume is a main determinant of joint torque regardless of age and gender, for both muscle groups.
AB - In the present study, we examined the relationships between muscle volume and joint torque for the elbow flexors and extensors in young and elderly individuals, with the aim of evaluating age effects on these relationships. The participants were 45 young (27 men and 18 women aged 20-37 years) and 51 elderly (19 men and 32 women aged 60-77 years) individuals. The joint torques developed during isometric maximal voluntary elbow flexion and extension were measured using a torque meter. The muscle volumes of the elbow flexors and extensors were determined by magnetic resonance imaging. For the elbow flexors, joint torque was significantly correlated with muscle volume in both young and elderly individuals (r = 0.564-0.872). There were also significant correlations between muscle volume and joint torque for the elbow extensors in elderly men and women as well as in young men and women (r = 0.715-0.826). None of the y-intercepts of the regression lines between muscle volume and joint torque were significantly different from zero. Furthermore, no significant age or gender effects on the joint torque per muscle volume of the elbow flexors and extensors were observed. The present results suggest that muscle volume is a main determinant of joint torque regardless of age and gender, for both muscle groups.
KW - Joint torque
KW - Magnetic resonance imaging
KW - Maximal isometric contraction
KW - Muscle volume
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UR - http://www.scopus.com/inward/citedby.url?scp=79960569504&partnerID=8YFLogxK
U2 - 10.1080/17461391.2010.509890
DO - 10.1080/17461391.2010.509890
M3 - Article
AN - SCOPUS:79960569504
VL - 11
SP - 277
EP - 282
JO - European Journal of Sport Science
JF - European Journal of Sport Science
SN - 1746-1391
IS - 4
ER -