Joint Cooling does not Hinder Athletic Performance during High-intensity Intermittent Exercise.
We examined the effects of ankle and knee joint cooling on 20-m sprint times and maximal vertical jump heights during high-intensity intermittent exercise. 21 healthy collegiate male basketball (n=14) and handball players (n=7) underwent 3 experimental sessions. Each session consisted of four 15-min quarters of high-intensity intermittent exercises including various intensities of 20-m shuttle running and jumping. A 20-min bilateral joint cooling (ankle, knee, or control-no cooling: in a counterbalanced order) was applied before quarters 1 and 3. After joint cooling, no warm-up activity other than the exercise protocol was given. The 20-m sprint times and maximal vertical jump heights in each experimental session were recorded at baseline (prior to quarter-1) and during each quarter. To test joint cooling effects over time, we performed 3×5 mixed model ANOVAs. Neither ankle nor knee joint cooling changed 20-m sprint times (F8,280=1.45; p=0.18) or maximal vertical jump heights (F8,280=0.76; p=0.64). However, a trend was observed in which joint cooling immediately decreased (quarters 1 and 3) but active warm-up for approximately 20 min improved 20-min sprint times (quarters 2 and 4). Our study suggests that athletic performance such as sprinting and jumping are not altered by joint cooling applied prior to or during high-intensity intermittent exercise.
Department of Taekwondo, Kyung Hee University, Yogin, Korea (Republic of).
H
H
Kim
Graduate School of Physical Education, Kyung Hee University, Yogin, Korea (Republic of).
D
D
Lee
Graduate School of Physical Education, Kyung Hee University, Yogin, Korea (Republic of).
H-M
HM
Choi
Athletic Training Laboratory Department of Sports Medicine, Kyung Hee University, Yogin, Korea (Republic of).
J
J
Park
D000843:Ankle Joint / Q000502:physiology; D054874:Athletic Performance / Q000502:physiology*; D003080:Cold Temperature; D018592:Cross-Over Studies; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D000072696:High-Intensity Interval Training; D006801:Humans; D007719:Knee Joint / Q000502:physiology; D008297:Male; D055815:Young Adult