TY - JOUR AU - Tavares, Francisco AU - Simões, Mário AU - Matos, Bruno AU - Smith, Tiaki Brett AU - Driller, Matthew PY - 2020 M3 - Original Research TI - The Acute and Longer-Term Effects of Cold Water Immersion in Highly-Trained Volleyball Athletes During an Intense Training Block JO - Frontiers in Sports and Active Living UR - https://www.frontiersin.org/articles/10.3389/fspor.2020.568420 VL - 2 SN - 2624-9367 N2 - Background: The use of cold water immersion (CWI) as a recovery strategy following exercise has drawn mixed findings over the last few decades. The purpose of the current study was two-fold; (1) to determine the acute effects of CWI within the training week, and (2) to investigate the longer-term effects of CWI over a 16-day period.Methods: In a randomized, controlled trial, 13 national-level volleyball athletes were allocated to two groups, an experimental (CWI, n = 7) and a control group (n = 6) during a 3-week national training camp. The experimental group were exposed to a CWI protocol after the last training session of each day (12 CWI sessions). Measures of lower (countermovement jump and squat jump height) and upper-body (medicine ball throw distance) power were collected pre- and post-training camp. Perceptual and neuromuscular performance measures (countermovement jump) were obtained during the training camp.Results: No significant differences between groups were observed for any measure (p > 0.05), however, small effect sizes were observed between experimental and control groups on day two of weeks one and two. Three weeks of training resulted in a significant decrease in countermovement jump height in the control group. A moderate effect size (d = 0.65) was found for countermovement jump performance between the experimental and control groups.Conclusion: Cold water immersion seems to provide little benefit to recovery in the acute setting (within the training week), however, chronically, there was a trend toward a benefit when implementing cold water immersion in well-trained volleyball athletes over 16 days. ER -