Presentation
Biomechanical Difference between Loaded Countermovement and Static Squat Jumps
International Society of Biomechanics in Sports Annual Meeting
(2001)
Abstract
It was the aim of this study to assess differences between countermovement (CMJ) and static (SJ) unloaded and loaded squat jumps. Eight male national/international level athletes and badminton players performed a series of jumps on two Kistler force plates. Maximum vertical force (Fmax) and rate of force development (RFDmax), net impulse (Impnet) and vertical take-off velocity (VT-O) were calculated and compared using a Two-Way (Jump x Load) ANOVA with two repeated factors. Fmax increased significantly with load and displayed a significant interaction with jump type. RFDmax showed significant jump main and interaction effects. Impnet only changed significantly with load. These results may lend credence to the spinal reflex or elastic energy theory of enhanced CMJ performance.
Keywords
- biomechanical differences,
- squat jumps
Disciplines
Publication Date
June, 2001
Location
San Francisco, CA
Comments
Abstract originally available through International Society of Biomechanics in Sport.
Citation Information
S. G. S. Coleman, C. Karatzaferi and Michael H. Stone. "Biomechanical Difference between Loaded Countermovement and Static Squat Jumps" International Society of Biomechanics in Sports Annual Meeting (2001) Available at: http://works.bepress.com/michael-stone/190/