May 13th, 2025 | Lawrence, KS, USA
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The countermovement jump (CMJ) is a common method for assessing lower-body power and neuromuscular characteristics. Two common strategies of CMJ are arm swing (AS) and no arm swing conditions (NAS).
PURPOSE
This study assessed performance differences between CMJ-AS and CMJ-NAS conditions in NCAA Division II basketball athletes
METHODS
NCAA Division II basketball athletes (men; n=15, height=194.4±5.5cm, weight=88.2±2.5kg, women; n=15, height=179.2±5.4cm, weight=81.3±2.5kg) participated in this study. Each athlete performed four maximum effort CMJs, 2 of which were CMJ-AS and 2 were CMJ-NAS. The vertical ground reaction forces during the CMJs were sampled at 1000 Hz using a dual force plate system. Univariate ANOVAs were performed using CMJ condition and sex as grouping variables.
RESULTS
Significant interaction effects were observed for CMJ condition and sex for JH (F1,116=5.9, p =0.016), BI (F1,116=4.6, p=0.035), PPP (F1,116=6.2, p=0.014), and mRSI (F1,116=6.0, p=0.017). The mean ± SD and p-values are reported in Table 1.
CONCLUSION
For NCAA Division II basketball athletes, significant differences in CMJ performance exist between sexes and CMJ conditions, these findings were consistent with reported results in Division I and professional athletes. While sex differences are well reported, observed results in performance, jump strategy, and jump proficiency between CMJ conditions highlight the need for further examination of the utility for each, especially as it may relate to monitoring athletic performance, training adaptation, or readiness to return to play, participation, and performance.
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Recommended Citation
Yang, Y; Johnson, QR; Scott, AA; Eserhaut, DA; Nguyen, MNQ; Frels, C; Sealey, D; Cabarkapa, D; and Fry, FACSM, AC (2024) “COUNTERMOVEMENT JUMP PERFORMANCE DIFFERENCES IN NCAA DIVISION II BASKETBALL: ARM SWING VS. NO ARM SWING,” International Journal of Exercise Science: Conference Proceedings: Vol. 11: Iss. 11, Article 5.
Available at: https://digitalcommons.wku.edu/ijesab/vol11/iss11/5
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