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Effects of Cryotherapy on Myolectrical Manifestations of Localized Muscle Fatigue: An Experimental Controlled Laboratory Study
Last registered on May 18, 2016

Pre-Trial

Trial Information
General Information
Title
Effects of Cryotherapy on Myolectrical Manifestations of Localized Muscle Fatigue: An Experimental Controlled Laboratory Study
RCT ID
AEARCTR-0001249
Initial registration date
May 18, 2016
Last updated
May 18, 2016 8:47 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
Universidad Mayor
Other Primary Investigator(s)
Additional Trial Information
Status
Completed
Start date
2013-04-01
End date
2015-05-01
Secondary IDs
Abstract
Study Design: Experimental Controlled Laboratory Study
Objective: To assess the effects of cryotherapy on muscular fatigability of the biceps brachii (BB) muscle after a fatiguing exercise.
Background: Cryotherapy has been widely used in clinical sports practice to prevent Delayed Onset Muscle Soreness (DOMS) and its known consequences on muscular function: pain, fatigue, reduced capacity to generate force and a reduced performance. Evidence is limited regarding the myolectrical manifestations of fatigue after the use of cryotherapy.
Methods: 50 subjects were randomized into two groups: cryotherapy (CRYO) and a control (CONT). Both groups were exposed to a fatiguing concentric-eccentric exercise protocol of the BB muscle. Immediately after the protocol, a -17°C cold pack was applied over the BB muscle in the CRYO group for 20 minutes. A 22°C cold pack was applied as a placebo intervention to the control group. Pain, time to task failure, myoelectrical manifestations of fatigue, and swelling were assessed before, 1h and 24h after the exercise protocol.
Results: There were no significant differences between groups in any of the outcome measurements. However, within group comparisons showed significantly lower holding time and higher levels of pain at 1h assessment in the CONT group. Myoelectrical manifestations of fatigue behaved similarly in both groups.
Conclusion: Cryotherapy seems to reduce the mechanical effects of fatigue and seems to prevent the excessive increase in pain in the first few hours after a fatiguing protocol. However, no effect on myoletrical manifestations of fatigue were observed.
External Link(s)
Registration Citation
Citation
Cristi, Iver. 2016. "Effects of Cryotherapy on Myolectrical Manifestations of Localized Muscle Fatigue: An Experimental Controlled Laboratory Study." AEA RCT Registry. May 18. https://doi.org/10.1257/rct.1249-1.0.
Former Citation
Cristi, Iver. 2016. "Effects of Cryotherapy on Myolectrical Manifestations of Localized Muscle Fatigue: An Experimental Controlled Laboratory Study." AEA RCT Registry. May 18. http://www.socialscienceregistry.org/trials/1249/history/8278.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2013-07-01
Intervention End Date
2014-03-01
Primary Outcomes
Primary Outcomes (end points)
Mioelectrical Manifestations of Fatigue of the Biceps Braqui
Pain
Sweelling
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
A randomized trial with two groups:
A intervention group subjected to a cryotherapy intervention and a control group subjected to a placebo intervention
Experimental Design Details
Randomization Method
Done with a coin flip:
Heads: cryotherapy intervention
Tails: placebo intervention
Randomization Unit
Individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
1 School of Kinesiology
Sample size: planned number of observations
50 subjects
Sample size (or number of clusters) by treatment arms
25 intervention group
25 control group
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
IRB Approval Date
IRB Approval Number
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports, Papers & Other Materials
Relevant Paper(s)
REPORTS & OTHER MATERIALS