Knee dynamics during take-off and landing in spike jumps performed by volleyball players with patellar tendinopathy.

Journal and index pages often block iframe embedding. This reader keeps the evidence details in Orthonotes and leaves the source page one click away.

Abstract

10. Br J Sports Med. 2007 Jul;41(7):e8. doi: 10.1136/bjsm.2006.032565. Epub 2007 Jan 15. Relationship between landing strategy and patellar tendinopathy in volleyball. Bisseling RW(1), Hof AL, Bredeweg SW, Zwerver J, Mulder T. Author information: (1)Center for Human Movement Sciences, University Center for Sport, Movement and Health, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. r.w.bisseling@rug.nl OBJECTIVE: The aetiology of patellar tendinopathy (jumper's knee) remains unclear. To see whether landing strategy might be a risk factor for the development of this injury, this study examined whether landing dynamics from drop jumps differed among healthy volleyball players (CON) and volleyball players with a jumper's knee. The patients with jumper's knee were divided into an asymptomatic group with a previous jumper's knee (PJK) and a symptomatic group with a recent jumper's knee (RJK). METHODS: Inverse dynamics analyses were used to estimate lower extremity joint dynamics from 30, 50 and 70 cm drop jumps in the three groups (CON, n = 8; PJK, n = 7; RJK, n = 9). A univariate repeated measures analysis of variance was used to compare the different landing techniques. RESULTS: Data analysis of the landing dynamics revealed that PJK showed higher knee angular velocities (p