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Comparison of the hang high-pull and loaded jump squat for the development of vertical jump and isometric force-time characteristics
journal contribution
posted on 2019-01-01, 00:00 authored by Dustin J Oranchuk, Tracey L Robinson, Zachary J Switaj, Eric DrinkwaterEric DrinkwaterWeightlifting movements have high skill demands and require expert coaching. Loaded jumps have a comparably lower skill demand, but may be similarly effective for improving explosive performance. The purpose of this study was to compare vertical jump performance, isometric force, and rate of force development (RFD) following a ten-week intervention employing the hang high-pull (hang-pull) or trap-bar jump squat (jump-squat). Eighteen NCAA Division II swimmers (8 males, 10 females) with at least one year of resistance training experience volunteered to participate. Testing included the squat jump (SJ), countermovement jump (CMJ) and the isometric mid-thigh pull (IMTP). Vertical ground reaction forces were analyzed to obtain jump height and relative peak power. Relative peak force, peak RFD and relative force at five time bands were obtained from the IMTP. Subjects were randomly assigned to either a hang-pull (n = 9) or jump-squat (n = 9) training group and completed a ten-week, volume-equated, periodized training program. While there was a significant main effect of training for both groups, no statistically significant between-group differences were found (p ≥ 0.17) for any of the dependent variables. However, medium effect sizes in favor of the jump-squat training group were seen in SJ height (d = 0.56) and SJ peak power (d = 0.69). Loaded jumps seem equally effective as weightlifting derivatives for improving lower-body power in experienced athletes. Since loaded jumps require less skill and less coaching expertise than weightlifting, loaded jumps should be considered where coaching complex movements is difficult.
History
Journal
Journal of strength and conditioning researchVolume
33Issue
1Pagination
17 - 24Publisher
Lippincott, Williams & WilkinsLocation
Colorado Springs, Colo.Publisher DOI
ISSN
1064-8011eISSN
1533-4287Language
engPublication classification
C Journal article; C1.1 Refereed article in a scholarly journalCopyright notice
2017, National Strength and Conditioning AssociationUsage metrics
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