Document Type

Conference Proceeding



Format of Original

4 p.

Publication Date



International Society of Biomechanics in Sports

Source Publication

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

Source ISSN



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.


Published version. Published as part of the proceedings of the conference, 27 International Conference on Biomechanics in Sports, 2009. Permalink. © 2009 International Society of Biomechanics in Sports. Used with permission.