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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Miyaguchi, Kazuyoshi Demura, Shinichi |
| Description | Country affiliation: Japan Author Affiliation: Miyaguchi K ( Liberal Arts Education Center, Ishikawa Prefectural University, Ishikawa, Japan. kazu1060@lapis.plala.or.jp) |
| Abstract | This study aimed to examine the relationships between muscle power output using the stretch-shortening cycle (SSC) and maximum strength, as measured by the 1 RM (1 repetition maximum) test and the isokinetic dynamometer under elbow flexion. Sixteen trained, young adult males pulled a constant load of 40% MVC (maximum voluntary elbow flexion contraction) by ballistic elbow flexion under the following two preliminary conditions: 1) the static relaxed muscle state (SR condition) and 2) using the SSC (SSC condition). Muscle power was determined from the product of the pulling velocity and load mass by a power measurement instrument with a rotary encoder. The 1 RM bench press (1RM BP) and isokinetic maximum strength under elbow flexion with the Cybex-325 were measured as indicators of dynamic maximum strength. 1) The early power output exerted under the SSC condition showed a significant and high correlation with the 1 RM BP (r = 0.83), but only moderate correlation with the isokinetic muscle strength (r = 0.50-0.67). 2) The contribution of the 1 RM BP to the early muscle contraction velocity exerted under the SSC condition was large. These results suggested that muscle power exerted using the SSC shows a stronger relationship with maximum muscle strength measured by a 1 RM test rather than isokinetic maximum strength. |
| File Format | HTM / HTML |
| ISSN | 10648011 |
| Issue Number | 1 |
| Volume Number | 22 |
| e-ISSN | 15334287 |
| Journal | Journal of Strength and Conditioning Research |
| Language | English |
| Publisher | Lippincott Williams & Wilkins |
| Publisher Date | 2008-01-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Sport Sciences Isometric Contraction Physiology Muscle Strength Muscle Stretching Exercises Methods Upper Extremity Adult Anthropometry Cohort Studies Humans Male Physical Education And Training Physical Endurance Probability Sensitivity And Specificity Task Performance And Analysis Weight-bearing Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science |
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