Abstract
This study aimed to identify the effects of same-day resistance priming exercise
on countermovement jump parameters and subjective readiness, and to identify
whether baseline strength level influenced these outcomes. Fourteen participants
performed two separate conditions (Priming [2 sets high-load parallel squats
with a 20% velocity loss cut-off] and Control) in a randomized,
counterbalanced crossover design. Countermovement jump was assessed at pre, post
and 6 h while readiness was assessed at pre and at 6 h only. All
countermovement jump force-time metrics were similar between conditions
(p>0.05), but different individual responses were noted
6 h after priming. Jump height was increased for 4/14, decreased
for another 4/14, and maintained for 6/14 participants at
6 h. Higher perceived physical performance capability
(p<0.001) and activation balance (p=0.005) were
observed after priming only. Positive relationships were observed between
strength and the percentage change in jump height (r=0.47–0.50;
p=0.033–0.042), concentric peak velocity
(r=0.48–0.51; p=0.030–0.041) and
impulse (r=0.47; p=0.030–0.045) at
post and 6 h after priming exercise. These findings suggest that
velocity-based high-load low-volume priming exercise has potential to positively
impact jump performance and subjective readiness later that day in certain
individuals. Participant absolute strength level may influence this response but
should be confirmed in subsequent studies.
Key words
performance facilitation - velocity loss - delayed potentiation - recovery - squat
