Abstract
We aimed to examine whether the influence of conditioning contraction intensity on the extent of postactivation potentiation (PAP) is muscle dependent. Eleven healthy males performed both thumb adduction and plantar flexion as a conditioning contraction. The conditioning contraction intensities were set at 20%, 40%, 60%, 80%, or 100% of the maximal voluntary isometric contraction (MVC).Before and after the conditioning contraction, twitch torque was measured for the respective joint to calculate the extent of PAP. In plantar flexion, the extent of PAP became significantly larger as the conditioning contraction intensity increased up to 80% MVC (p<0.05). In contrast, the extent of PAP in thumb adduction increased significantly only up to 60% MVC (p<0.05), but not at higher intensities.These results indicate that the influence of the conditioning contraction intensity on the extent of PAP is muscle dependent. Our results suggest that a conditioning contraction with submaximal intensity can sufficiently evoke sizable PAP in the muscle where most of muscle fibers are recruited at submaximal intensities, thereby attenuating muscle fatigue induced by the conditioning contraction.
| Original language | English |
|---|---|
| Pages (from-to) | 240-245 |
| Number of pages | 6 |
| Journal | Journal of Electromyography and Kinesiology |
| Volume | 24 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2014 |
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Keywords
- Adductor pollicis
- Motor unit
- Muscle fatigue
- Size principle
- Soleus
ASJC Scopus subject areas
- Neuroscience (miscellaneous)
- Biophysics
- Clinical Neurology
Cite this
Effect of conditioning contraction intensity on postactivation potentiation is muscle dependent. / Fukutani, Atsuki; Hirata, Kosuke; Miyamoto, Naokazu; Kanehisa, Hiroaki; Yanai, Toshimasa; Kawakami, Yasuo.
In: Journal of Electromyography and Kinesiology, Vol. 24, No. 2, 2014, p. 240-245.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of conditioning contraction intensity on postactivation potentiation is muscle dependent
AU - Fukutani, Atsuki
AU - Hirata, Kosuke
AU - Miyamoto, Naokazu
AU - Kanehisa, Hiroaki
AU - Yanai, Toshimasa
AU - Kawakami, Yasuo
PY - 2014
Y1 - 2014
N2 - We aimed to examine whether the influence of conditioning contraction intensity on the extent of postactivation potentiation (PAP) is muscle dependent. Eleven healthy males performed both thumb adduction and plantar flexion as a conditioning contraction. The conditioning contraction intensities were set at 20%, 40%, 60%, 80%, or 100% of the maximal voluntary isometric contraction (MVC).Before and after the conditioning contraction, twitch torque was measured for the respective joint to calculate the extent of PAP. In plantar flexion, the extent of PAP became significantly larger as the conditioning contraction intensity increased up to 80% MVC (p<0.05). In contrast, the extent of PAP in thumb adduction increased significantly only up to 60% MVC (p<0.05), but not at higher intensities.These results indicate that the influence of the conditioning contraction intensity on the extent of PAP is muscle dependent. Our results suggest that a conditioning contraction with submaximal intensity can sufficiently evoke sizable PAP in the muscle where most of muscle fibers are recruited at submaximal intensities, thereby attenuating muscle fatigue induced by the conditioning contraction.
AB - We aimed to examine whether the influence of conditioning contraction intensity on the extent of postactivation potentiation (PAP) is muscle dependent. Eleven healthy males performed both thumb adduction and plantar flexion as a conditioning contraction. The conditioning contraction intensities were set at 20%, 40%, 60%, 80%, or 100% of the maximal voluntary isometric contraction (MVC).Before and after the conditioning contraction, twitch torque was measured for the respective joint to calculate the extent of PAP. In plantar flexion, the extent of PAP became significantly larger as the conditioning contraction intensity increased up to 80% MVC (p<0.05). In contrast, the extent of PAP in thumb adduction increased significantly only up to 60% MVC (p<0.05), but not at higher intensities.These results indicate that the influence of the conditioning contraction intensity on the extent of PAP is muscle dependent. Our results suggest that a conditioning contraction with submaximal intensity can sufficiently evoke sizable PAP in the muscle where most of muscle fibers are recruited at submaximal intensities, thereby attenuating muscle fatigue induced by the conditioning contraction.
KW - Adductor pollicis
KW - Motor unit
KW - Muscle fatigue
KW - Size principle
KW - Soleus
UR - http://www.scopus.com/inward/record.url?scp=84895112408&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84895112408&partnerID=8YFLogxK
U2 - 10.1016/j.jelekin.2014.01.002
DO - 10.1016/j.jelekin.2014.01.002
M3 - Article
C2 - 24485557
AN - SCOPUS:84895112408
VL - 24
SP - 240
EP - 245
JO - Journal of Electromyography and Kinesiology
JF - Journal of Electromyography and Kinesiology
SN - 1050-6411
IS - 2
ER -