ID 57080
Title Transcription
ヒロウ コンパイ ニ イタル シンチョウ タンシュク サイクル ウンドウ ガ カタイ サントウキン ノ シュウシュク トクセイ オヨビ ソンショウ シヒョウ ニ オヨボス エイキョウ
Title Alternative
Effecfs of stretch-shortening cycle exercise to exhaustion on the contractile properties of the triceps surae muscle and injury-related parameters
Author
Tano, Satoshi Graduate School of Human and Environmental Sciences, The University of Tokushima|Hashimoto Hospital
Matoba, Hideki The Faculty of Integrated Arts and Sciences, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Obara, Shigeru The Faculty of Integrated Arts and Sciences, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Araki, Hideo The Faculty of Integrated Arts and Sciences, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Nomura, Masahiro The Faculty of Integrated Arts and Sciences, The University of Tokushima
Satake, Masayuki The Faculty of Integrated Arts and Sciences, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Miura, Hajime The Faculty of Integrated Arts and Sciences, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Keywords
heel-raise
stretch-shortening cycle (SSC)
muscle injury
Content Type
Departmental Bulletin Paper
Description
The repeated heel-raiseis a typical stretch-shortening cyc1e (SSC) exercise. The exercise is not only performed in resistance training but also used for evaluating muscular strength in c1inical settings. The present study was undertaken to investigate the effect of repeated heel-raise exercise to a volitional exhaustion on contractile properties of the triceps surae muscle and parameters reflecting muscle injury.
Five Healthy university students with no orthopedic disorders served as subjects. Each subject performed two exercises. ln SSC condition,the subjects repeated the SSC exercise every 2 seconds to volitional exhaustion. ln the IS0 condition,they repeated the same number of an isometric exercise as that of the SSC exercise.
In the SSC condition,the subjects exhausted after repeating the exercise 28.6 times. At exhaustion,maximal torque developing capacity decreased significantly and the decrease was accompanied by a tendency of a lower median power frequency of the EMG signals. A significantly higher lactate concenlration was also observed. On the other hand,the ISO exercise induced no significant changes in these parameters.
In the SSC condition,the decreased maximal torque developing capacity at exhaustion remained one hour and even one day following the exhausting exercise. The circumference of the lower extremity became larger significantly at exhaustion as compared with the pre-exercise values and remained higher one hour and one day after the exercise. The pressure threshold for pain in the medial head of the gastrocnemius muscle and the muscle-tendon junction of the triceps surae muscle became significantly
lower compared with pre-exercise value one hour or one day following the exercise. Muscle pain
evaluated using visual analog scale f1uctuated and the higher value was observed at exhaustion and one day after SSC exercise. ln the ISO condition,no significant changes in these parameters were observed.
The results of the present study indicated that the SSC exercise had more profound effects on
contractile properties, myo-electrical signals and injury-related parameters than the ISO exercise.
Furthermore, the results suggest that,even in a relatively small number of repetitions,repeated heel-raise, at ypical SSC exercise,induces as light muscle injury.
Journal Title
徳島大学総合科学部人間科学研究
ISSN
09199810
NCID
AN1043724X
Publisher
徳島大学.総合科学部.人間社会学科.人間科学講座
Volume
15
Start Page
15
End Page
21
Sort Key
15
Published Date
2007-10-05
EDB ID
FullText File
language
jpn
departments
Liberal Arts and Sciences
Integrated Arts and Sciences