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

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
May 18, 2016, 8:47 AM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Locations

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. https://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

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Intervention

Is the intervention completed?
No
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