Central and Peripheral Adjustments During High-intensity Exercise Following Cold Water Immersion
Overview
Affiliations
Purpose: We investigated the acute effects of cold water immersion (CWI) or passive recovery (PAS) on physiological responses during high-intensity interval training (HIIT).
Methods: In a crossover design, 14 cyclists completed 2 HIIT sessions (HIIT1 and HIIT2) separated by 30 min. Between HIIT sessions, they stood in cold water (10 °C) up to their umbilicus, or at room temperature (27 °C) for 5 min. The natural logarithm of square-root of mean squared differences of successive R-R intervals (ln rMSSD) was assessed pre- and post-HIIT1 and HIIT2. Stroke volume (SV), cardiac output (Q), O2 uptake (VO2), total muscle hemoglobin (t Hb) and oxygenation of the vastus lateralis were recorded (using near infrared spectroscopy); heart rate, Q, and VO2 on-kinetics (i.e., mean response time, MRT), muscle de-oxygenation rate, and anaerobic contribution to exercise were calculated for HIIT1 and HIIT2.
Results: ln rMSSD was likely higher [between-trial difference (90% confidence interval) [+13.2% (3.3; 24.0)] after CWI compared with PAS. CWI also likely increased SV [+5.9% (-0.1; 12.1)], possibly increased Q [+4.4% (-1.0; 10.3)], possibly slowed Q MRT [+18.3% (-4.1; 46.0)], very likely slowed VO2 MRT [+16.5% (5.8; 28.4)], and likely increased the anaerobic contribution to exercise [+9.7% (-1.7; 22.5)].
Conclusion: CWI between HIIT slowed VO2 on-kinetics, leading to increased anaerobic contribution during HIIT2. This detrimental effect of CWI was likely related to peripheral adjustments, because the slowing of VO2 on-kinetics was twofold greater than that of central delivery of O2 (i.e., Q). CWI has detrimental effects on high-intensity aerobic exercise performance that persist for ≥ 45 min.
Aidiel L, Lim D, Chow K, Ihsan M, Chia M, Choo H Temperature (Austin). 2024; 11(2):123-136.
PMID: 38846527 PMC: 11152097. DOI: 10.1080/23328940.2024.2302772.
Coertjens M, Coertjens P, Tartaruga M, Gorski T, Lima-Silva A, Carminatti L Eur J Appl Physiol. 2023; 123(12):2813-2831.
PMID: 37393218 DOI: 10.1007/s00421-023-05265-6.
Malta E, Lopes V, Esco M, Zagatto A Eur J Appl Physiol. 2023; 123(9):1939-1948.
PMID: 37103570 DOI: 10.1007/s00421-023-05205-4.
Egana M, Allen L, Gleeson K, Gildea N, Warmington S Front Sports Act Living. 2021; 3:738870.
PMID: 34761215 PMC: 8573130. DOI: 10.3389/fspor.2021.738870.
Efficacy of ice slurry and carbohydrate-electrolyte solutions for firefighters.
Tabuchi S, Horie S, Kawanami S, Inoue D, Morizane S, Inoue J J Occup Health. 2021; 63(1):e12263.
PMID: 34375489 PMC: 8354579. DOI: 10.1002/1348-9585.12263.