CRITERION VALIDITY OF A MARG SENSOR TO ASSESS COUNTERMOVEMENT JUMP PERFORMANCE IN ELITE BASKETBALLERS.
In: Journal of Strength & Conditioning Research, Jg. 35 (2021-03-01), Heft 3, S. 797-803
academicJournal
Zugriff:
This study assessed the criterion validity of a magnetic, angular rate, and gravity (MARG) sensor to measure countermovement jump (CMJ) performance metrics, including CMJ kinetics before take-off, in elite basketballers. Fifty-four basketballers performed 2 CMJs on a force platform with data simultaneously recorded by a MARG sensor located centrally on the player’s back. Vertical accelerations recorded from the MARG sensor were expressed relative to the direction of gravity. Jumps were analyzed by a blinded assessor and the best jump according to the force platform was used for comparison. Pearson correlation coefficients (r) and mean bias with 95% ratio limits of agreement (95% RLOA) were calculated between the MARG sensor and the force platform for jumps performed with correct technique (n = 44). The mean bias for all CMJ metrics was less than 3%. Ninety-five percent RLOA between MARG- and force platform–derived flight time and jump height were 1 ± 7% and 1 ± 15%, respectively. For CMJ performance metrics before takeoff, impulse displayed less random error (95% RLOA: 1 ± 13%) when compared with mean concentric power and time to maximum force displayed (95% RLOA: 0 ± 29% and 1 ± 34%, respectively). Correlations between MARG and force platform were significant for all CMJ metrics and ranged from large for jump height (r = 0.65) to nearly perfect for mean concentric power (r = 0.95). Strong relationships, low mean bias, and low random error between MARG and force platform suggest that MARG sensors can provide a practical and inexpensive tool to measure impulse and flight time–derived CMJ performance metrics. [ABSTRACT FROM AUTHOR]
Titel: |
CRITERION VALIDITY OF A MARG SENSOR TO ASSESS COUNTERMOVEMENT JUMP PERFORMANCE IN ELITE BASKETBALLERS.
|
---|---|
Autor/in / Beteiligte Person: | STAUNTON, CRAIG A. ; STANGER, JONATHAN J. ; WUNDERSITZ, DANIEL W. T. ; GORDON, BRETT A. ; CUSTOVIC, EDHEM ; KINGSLEY, MICHAEL I. C. |
Zeitschrift: | Journal of Strength & Conditioning Research, Jg. 35 (2021-03-01), Heft 3, S. 797-803 |
Veröffentlichung: | 2021 |
Medientyp: | academicJournal |
ISSN: | 1064-8011 (print) |
DOI: | 10.1519/jsc.0000000000002784 |
Schlagwort: |
|
Sonstiges: |
|