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The Effects of Cold Water Immersion With Different Dosages (Duration and Temperature Variations) on Heart Rate Variability Post-exercise Recovery

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ClinicalTrials.gov Identifier: NCT02499640
Recruitment Status : Completed
First Posted : July 16, 2015
Last Update Posted : July 16, 2015
Sponsor:
Information provided by (Responsible Party):
Franciele Marques Vanderle, Paulista University

Brief Summary:
The aim of the present study was to investigate the effects of cold water immersion (CWI) during post-exercise recovery with different durations and temperatures on heart rate variability (HRV) indices. 100 participants performed a protocol of jumps and a Wingate test, and immediately afterwards were immersed in cold water, according to the characteristics of each group (CG: control; G1: 5' at 9±1°C; G2: 5' at 14±1°C; G3: 15' at 9±1°C; G4: 15' at 14±1°C). Analyses were performed at baseline, during the recuperative technique (TRec) by CWI and 20, 30, 40, 50 and 60 minutes post-exercise. The HRV indices average of all RR intervals in each analysis period (Mean RR), standard deviation of normal R-R intervals (SDNN), square root of the mean of the sum of the squares of differences between adjacent R-R intervals (RMSSD), spectral components of very low frequency (VLF), low frequency (LF) and high frequency (HF), scatter of points perpendicular to the line of identity of the Poincaré Plot (SD1) and scatter points along the line of identity (SD2) were assessed. Comparisons between groups and moments were performed using the technique of analysis of variance for repeated measures in two scheme factors. A significance level of p<0.05 was considered.

Condition or disease Intervention/treatment Phase
Cryotherapy Effect Other: immersion cold water Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 100 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: The Effects of Cold Water Immersion With Different Dosages (Duration and Temperature Variations) on Heart Rate Variability Post-exercise Recovery
Study Start Date : September 2014
Actual Primary Completion Date : May 2015
Actual Study Completion Date : May 2015

Resource links provided by the National Library of Medicine


Arm Intervention/treatment
No Intervention: GC
Control group - CG (n = 20), which suffered no recuperative technique
Experimental: G1
G1 (n = 20) was subjected to a recovery procedure by immersion cold water for 5 minutes as from 9±1 degrees Celsius
Other: immersion cold water
immersion cold water at different temperatures and exposure times

Experimental: G2
G2 (n = 20) was subjected to a recovery procedure by immersion cold water for 5 minutes as from 14±1 degrees Celsius
Other: immersion cold water
immersion cold water at different temperatures and exposure times

Experimental: G3
G3 (n = 20) was subjected to a recovery procedure by immersion cold water for 15 minutes as from 9±1 degrees Celsius
Other: immersion cold water
immersion cold water at different temperatures and exposure times

Experimental: G4
G4 (n = 20) was subjected to a recovery procedure by immersion cold water for 15 minutes as from 14±1 degrees Celsius
Other: immersion cold water
immersion cold water at different temperatures and exposure times




Primary Outcome Measures :
  1. Change from Baseline in indices of heart rate variability at 60 minutes [ Time Frame: 20, 30, 40, 50 and 60 minutes post-exercise ]


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Ages Eligible for Study:   18 Years to 30 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • male sex
  • healthy
  • aged between 18 and 30 years
  • classified as physically active through the International Physical Activity Questionnaire

Exclusion Criteria:

  • smokers
  • alcoholics
  • use drugs that influenced cardiac autonomic activity
  • cardiovascular, metabolic or endocrine diseases.

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Responsible Party: Franciele Marques Vanderle, PhD, Paulista University
ClinicalTrials.gov Identifier: NCT02499640     History of Changes
Other Study ID Numbers: 51903/2012
First Posted: July 16, 2015    Key Record Dates
Last Update Posted: July 16, 2015
Last Verified: July 2015

Keywords provided by Franciele Marques Vanderle, Paulista University:
Recovery of function
Autonomic nervous system
Heart rate variability
Cryotherapy
Immersion