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ERIC Number: EJ1459069
Record Type: Journal
Publication Date: 2025
Pages: 7
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-1091-367X
EISSN: EISSN-1532-7841
Is the Rate of Force Development Produced in the Squat Jump a Reliable Metric and Is It Related to Jump Height?
Juliano Dal Pupo; Rafael Lima Kons; Rodrigo Ghedini Gheller; Carlos W. P. Gonçalves; Amilton Vieira
Measurement in Physical Education and Exercise Science, v29 n1 p113-119 2025
This study aimed to analyze the intrasession reliability of the rate of force development (RFD) in different time windows in squat jumps (SJ) performed at different knee starting angles, and identify the relationship of RFD with vertical jump height (VJH). Twenty male volleyball and basketball players participated. Athletes randomly performed SJ from four different knee-flexion angles. The RFD was analyzed from six different windows, from force onset to instant peak force, in each position using the ground reaction forces. Reliability analysis was performed based on the intraclass correlation coefficient (ICC) and coefficient of variation (CV%); Spearman's rho was used to test the relationship between RFD and VJH. The results demonstrated that RFD[subscript 0-PF] was the only variable assumed to be reliable, demonstrating an ICC > 0.84 and CV < 8.5% in all positions, and significant correlations between RFD metrics and VJH were observed at SJ[subscript 70] and SJ[subscript PREF]. Some variables were underpowered due to the small sample size, as a limitation of the study.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A