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Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening.
J Sport Rehabil 2019; :1-6JS

Abstract

CONTEXT

Despite the popularity of jump-landing tasks being used to identify injury risk factors, minimal data currently exist examining differences in knee kinematics during commonly used bilateral jumping tasks. This is especially the case for rebounding-based protocols involving young athletes.

OBJECTIVE

To compare the frontal plane projection angles (FPPAs) during the drop vertical jump (DVJ) and tuck jump assessment (TJA) in a cohort of elite male youth soccer players of varying maturity status.

METHODS

A total of 57 male youth soccer players from an English championship soccer club participated in this study. Participants performed 3 trials of the DVJ and TJA, during which movement was recorded with 2-dimensional video cameras. FPPA for both right (FPPA-r) and left (FPPA-l) legs, with values <180° indicative of medial knee displacement.

RESULTS

On a whole-group level, FPPA-r (172.7° [7.4°] vs 177.2° [11.7°]; P < .05; effect size [ES] = 0.46) and FPPA-l (173.4° [7.3°] vs 179.2° [11.0°]; P < .05; ES = 0.62) were significantly greater for both limbs in the TJA compared with the DVJ; however, these differences were less consistent when grouped by maturity status. FPPA-r during the TJA was significantly and moderately greater in the circa-peak height velocity (PHV) group compared with the post-PHV cohorts (169.4° [6.4°] vs 175.3° [7.8°]; P < .05; ES = 0.49). Whole-group data showed moderate relationships for FPPA-r and FPPA-l between the TJA and DVJ; however, stronger relationships were shown in circa- and post-PHV players compared with the pre-PHV cohort.

CONCLUSIONS

Considering that the TJA exposed players to a larger FPPA and was sensitive to between-group differences in FPPA-r, the TJA could be viewed as a more suitable screen for identifying FPPA in young male soccer players.

Authors

No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31629336

Citation

Lloyd, Rhodri S., et al. "Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening." Journal of Sport Rehabilitation, 2019, pp. 1-6.
Lloyd RS, Oliver JL, Myer GD, et al. Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening. J Sport Rehabil. 2019.
Lloyd, R. S., Oliver, J. L., Myer, G. D., De Ste Croix, M. B., Wass, J., & Read, P. J. (2019). Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening. Journal of Sport Rehabilitation, pp. 1-6. doi:10.1123/jsr.2019-0077.
Lloyd RS, et al. Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening. J Sport Rehabil. 2019 Oct 18;1-6. PubMed PMID: 31629336.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening. AU - Lloyd,Rhodri S, AU - Oliver,Jon L, AU - Myer,Gregory D, AU - De Ste Croix,Mark B, AU - Wass,Josh, AU - Read,Paul J, Y1 - 2019/10/18/ PY - 2019/02/21/received PY - 2019/05/07/revised PY - 2019/05/20/accepted PY - 2019/10/20/entrez PY - 2019/10/20/pubmed PY - 2019/10/20/medline KW - frontal plane projection angle KW - knee valgus KW - maturation KW - tuck jump assessment SP - 1 EP - 6 JF - Journal of sport rehabilitation JO - J Sport Rehabil N2 - CONTEXT: Despite the popularity of jump-landing tasks being used to identify injury risk factors, minimal data currently exist examining differences in knee kinematics during commonly used bilateral jumping tasks. This is especially the case for rebounding-based protocols involving young athletes. OBJECTIVE: To compare the frontal plane projection angles (FPPAs) during the drop vertical jump (DVJ) and tuck jump assessment (TJA) in a cohort of elite male youth soccer players of varying maturity status. METHODS: A total of 57 male youth soccer players from an English championship soccer club participated in this study. Participants performed 3 trials of the DVJ and TJA, during which movement was recorded with 2-dimensional video cameras. FPPA for both right (FPPA-r) and left (FPPA-l) legs, with values <180° indicative of medial knee displacement. RESULTS: On a whole-group level, FPPA-r (172.7° [7.4°] vs 177.2° [11.7°]; P < .05; effect size [ES] = 0.46) and FPPA-l (173.4° [7.3°] vs 179.2° [11.0°]; P < .05; ES = 0.62) were significantly greater for both limbs in the TJA compared with the DVJ; however, these differences were less consistent when grouped by maturity status. FPPA-r during the TJA was significantly and moderately greater in the circa-peak height velocity (PHV) group compared with the post-PHV cohorts (169.4° [6.4°] vs 175.3° [7.8°]; P < .05; ES = 0.49). Whole-group data showed moderate relationships for FPPA-r and FPPA-l between the TJA and DVJ; however, stronger relationships were shown in circa- and post-PHV players compared with the pre-PHV cohort. CONCLUSIONS: Considering that the TJA exposed players to a larger FPPA and was sensitive to between-group differences in FPPA-r, the TJA could be viewed as a more suitable screen for identifying FPPA in young male soccer players. SN - 1543-3072 UR - https://www.unboundmedicine.com/medline/citation/31629336/Comparison_of_Drop_Jump_and_Tuck_Jump_Knee_Joint_Kinematics_in_Elite_Male_Youth_Soccer_Players:_Implications_for_Injury_Risk_Screening L2 - https://journals.humankinetics.com/doi/10.1123/jsr.2019-0077 DB - PRIME DP - Unbound Medicine ER -