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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | McLellan, Christopher P. Lovell, Dale I. Gass, Gregory C. |
| Description | Country affiliation: Australia Author Affiliation: McLellan CP ( Faculty of Health Sciences and Medicine, Bond University, Robina, Queensland, Australia. cmclella@bond.edu.au) |
| Abstract | The purpose of this study was to examine a) the relationship between rate of force development (RFD) and vertical jump (VJ) performance during a counter movement jump (CMJ), and b) the reliability of RFD recorded during the CMJ and squat jump (SJ) forms of the VJ. Twenty-three physically active men aged 23 ± 3.9 years participated in the study. Subjects completed 3 unloaded CMJ and 3 unloaded SJ in random order on a force plate. The RFD was measured during CMJ and SJ movements with vertical jump displacement (VJD) measured simultaneously during the CMJ only. Subjects incorporated arm swing to their CMJ technique to reach up as high as possible, and VJD was measured. All SJ were executed with both hands on the hips throughout the full range of movement. Peak rate of force development (PRFD), peak force (PF), and time to peak force (TPF) were significantly correlated to VJD during the CMJ (r = 0.68, r = 0.51, and r = -0.48, respectively). The RFD and TPF during the CMJ and SJ were associated with low test-retest reliability (coefficient of variation [CV]: 11.8-7.9%). Peak and average power, PF, and VJD produced high test-retest reliability (CV: 2.8-5.1%) during both the CMJ and SJ movements. Our results indicate that PRFD, a measure of explosive strength, and PF, a measure of maximal strength, are the primary contributors to VJD during the CMJ in physically active men. However, caution must be used when interpreting data using PRFD because of its low retest reliability. |
| File Format | HTM / HTML |
| ISSN | 10648011 |
| Issue Number | 2 |
| Volume Number | 25 |
| e-ISSN | 15334287 |
| Journal | Journal of Strength and Conditioning Research |
| Language | English |
| Publisher | Lippincott Williams & Wilkins |
| Publisher Date | 2011-02-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Sport Sciences Muscle Contraction Physiology Muscle Strength Track And Field Adult Humans Kinetics Male Muscle, Skeletal Physical Endurance Reference Values Reproducibility Of Results Stress, Mechanical Task Performance And Analysis Young Adult Comparative Study 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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