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

July 15, 2015 updated by: Franciele Marques Vanderle, Paulista University
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.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

100

Phase

  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 30 years (ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: PREVENTION
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / 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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Change from Baseline in indices of heart rate variability at 60 minutes
Time Frame: 20, 30, 40, 50 and 60 minutes post-exercise
20, 30, 40, 50 and 60 minutes post-exercise

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Paulista University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2014

Primary Completion (ACTUAL)

May 1, 2015

Study Completion (ACTUAL)

May 1, 2015

Study Registration Dates

First Submitted

July 14, 2015

First Submitted That Met QC Criteria

July 15, 2015

First Posted (ESTIMATE)

July 16, 2015

Study Record Updates

Last Update Posted (ESTIMATE)

July 16, 2015

Last Update Submitted That Met QC Criteria

July 15, 2015

Last Verified

July 1, 2015

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 51903/2012

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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