Quantifying the onset of the concentric phase of the force–time record during jumping

Citation data:

Proceedings of the XXVII Congress of the International Society of Biomechanics in Sports

Publication Year:
2009
Usage 133
Downloads 99
Abstract Views 34
Repository URL:
https://epublications.marquette.edu/exsci_fac/35; https://epublications.marquette.edu/cgi/viewcontent.cgi?article=1034&context=exsci_fac
Author(s):
Leissring, S.K.; Ebben, William; Garceau, Luke; Petushek, Erich; Jensen, R.L.
Publisher(s):
International Society of Biomechanics in Sports; e-Publications@Marquette
Tags:
knee joint reaction forces; ground reaction forces; jumping; Exercise Science
conference paper description
Thirteen college students performed a drop jump from height equal to their peak vertical jump, single leg jumps from the left and right legs, and a counter movement jump. Vertical ground reaction force (GRF) obtained via an AMTI force plate and video analysis of markers placed on the hip, knee, lateral malleolus, and fifth metatarsal were used to estimate reaction forces on the knee joint. One-way Repeated Measures ANOVA indicated no differences for knee joint reaction forces relative to body weight or peak GRF for any of the jumps (p > 0.05). Average measures Intraclass Correlation Coefficients ranged from r = 0.90 to 0.97. Results indicate that peak GRF and knee joint reaction forces during the drop jump, counter movement jump, and single leg left and right leg jumps are reliable measures.