Reliability, validity, and maturation-related differences of frontal and sagittal plane landing kinematic measures during drop jump and tuck jump screening tests in male youth soccer players
Sainz de Baranda, Pilar
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Objectives: To determine the inter-rater and intra-rater reliability of frontal and sagittal plane landing kinematic measures during drop jump (DVJ) and tuck jump (TJA) tasks in male youth soccer players, to assess the concurrent validity between DVJ and TJA tests, and to evaluate the ability of both tasks to detect differences between players’ stage of maturation. Design: Cross-sectional study. Participants: 223 male youth soccer players. Main outcome measures: Frontal plane knee projection angles (FPPA) , and hip (HF), knee (KF) and ankle (AF) flexion angles at initial contact (IC) and peak flexion (PF) (i.e., the deepest landing position) in the sagittal plane were assessed. Results: Good-to-excellent inter- and intra-rater reliability (ICC>0.75; TEMST <0.3; CVTE <5%) for the FPPA, HF and KF during DVJ and TJA tasks were found. A low concurrent validity between DVJ and TJA measures was reported. Differences by maturity status (BF10 >10; error<10; δ>0.6) were only identified for the TJA. Pre-PHV group reported higher FPPA, HF-IC, HF-PF, and KF-IC values, as well as lower AF-IC than post-PHV. Pre-PHV also displayed greater HF-IC and KF-IC than circa-PHV group. Conclusions: Although both tests are reliable, the TJA might be viewed as a more informative tool given it shows greater FPPA and can also detect differences by maturity status.
Physical Therapy in Sport;
Robles-Palazón, F.J., Ruiz-Pérez, I., Oliver, J.L., Ayala, F. and de Baranda, P.S. (2021) 'Reliability, validity, and maturation-related differences of frontal and sagittal plane landing kinematic measures during drop jump and tuck jump screening tests in male youth soccer players', Physical Therapy in Sport. https://doi.org/10.1016/j.ptsp.2021.05.009
Article published in Physical Therapy in Sport available open access at https://doi.org/10.1016/j.ptsp.2021.05.009
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
- Sport Research Groups 
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