Associations between whole-body reaction time, maximum jump height, and skeletal muscle mass when reaction time and jump height are investigated as a complex.
Manabu Watanabe, Koji Watarai, Munenori Katoh
PMID 39239417WHAT IT FOUND
Reaction time under simple and complex conditions did not correlate, suggesting different cognitive demands.
Jump height correlated strongly between conditions. Skeletal muscle mass associated with jump height but not reaction time.
Key findings
01No correlation between reaction time under simple and complex conditions.
02Positive correlation between jump height under simple and complex conditions.
03Skeletal muscle mass correlated with jump height but not reaction time.
STILL TO COME
How it was doneWhat they found
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What it does not show
Study did not use motion analysis to assess jumping skills. Participants were healthy adults, not specific open-skill or closed-skill athletes. Sample size is moderate (54 participants). Findings apply to vertical jump tasks, not all agility movements.
Declared interests
Funded by Japan Society for the Promotion of Science. No conflicts of interest declared.
The easy way to misread this
Do not assume that improving simple reaction time will improve complex reaction time, as they did not correlate. Also, do not expect skeletal muscle mass to predict reaction time, as no association was found.