Sleep and Delayed-onset Muscle Soreness

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

56 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-04-10

Study Completion Date

2024-05-25

Brief Summary

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There is a need for further experimental research in order to gain a more in-depth understanding of this vicious cycle of pain and sleep disorders. Although the effects of chronic pain and its impact on sleep have been extensively researched, the influence of sleep on acute pain has been addressed in only a limited number of studies. A more comprehensive grasp of the manner in which sleep influences the pain sensory profile subsequent to an acute injury may offer insight into the significance of sleep during recovery stage. In this respect, the objective of this study was to examine the effect of sleep on pain perception, pain sensitivity and range of motion following the induction of delayed onset muscle soreness (DOMS) through eccentric loading, specifically through the performance of squat exercises.

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Detailed Description

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Delayed onset muscle soreness (DOMS) represents a phenomenon characterised by a range of symptoms, encompassing varying degrees of muscle stiffness and pain, from mild to severe, with the potential to cause considerable functional impairment. This may be attributed to muscle damage and subsequent inflammation resulting from eccentric contractions or activities of an unusually intense nature. In accordance with these principles, exercise-induced DOMS typically manifests following an abrupt increase in exercise intensity, the execution of unconventional exercise movements, and most notably, following the performance of exercises that necessitate eccentric muscle actions . DOMS frequently results in a reduction in muscle function, including a decline in strength, a narrowing of the range of motion, increased pain sensitivity, and a decrease in the intensity of proprioception sensations within a period of 24 to 72 hours, with the potential for these effects to persist for several days. The processes underlying of DOMS comprise overstretching of sarcomeres, mechanical stresses in muscle structures, overlaps and disruption of filaments, and reactions of biochemical that affect contractile structures of muscle. Furthermore, inflammatory processes linked to oxidative stress and an increased pain receptors sensitivity is additional factors contributing to the development of DOMS .

One of the most significant factors affecting pain is sleep. Those suffering from persistent pain consistently indicate inferior sleep quality in comparison to controls , and a direct correlation has been observed between the quality of sleep and the severity of pain experienced by individuals. It is established in the literature that the sensitisation of pain mechanisms is raised in both intervention models of acute pain and chronic pain. Furthermore, individuals who experience primary insomnia without pain report heightened sensitivity to pain and an increased frequency of spontaneous pain episodes compared to control subjects. The findings of experimental studies indicate that sleep disruption in healthy individuals is linked to a considerable rise in pain sensitivity, potentially associated with elevated serum concentrations of pro-inflammatory biomarkers, even in the absence of tissue damage. This results in a vicious cycle of pain and sleep disorders, with each condition precipitating the other, thereby rendering the problem challenging to comprehend.

Conditions

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Delayed-onset Muscle Soreness Sleep Pain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

The study was designed as a randomised, single-blind, controlled trial. The patients were divided into two groups, designated as the "sleep group" and the "non-sleep group," through the implementation of a matched randomization method that considered both gender and age as variables.

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Investigators

Prior to and following the interventions, all assessments were evaluated by a researcher who was blinded to the groups.

Study Groups

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Sleep Group

The sleep group was instructed to engage in a minimum of six hours of sleep over the course of the 24-hour observation period. Individuals who slept for a duration of less than six hours were excluded from the study.

Group Type EXPERIMENTAL

Sleep

Intervention Type OTHER

A training programme was devised which involved the participants performing maximum squat repetitions with their own body weight as a workload, in order to induce delayed-onset muscle soreness in the quadriceps. Before the maximum squat repetition, all participants performed a warm-up programme including 5 minutes of walking. Participants were instructed to perform the maximum number of repetitions within the one minute allotted for each set of squats and, after a 10-second rest period, to continue the programme in the same cycle until exhaustion. In the initial 24-hour period following the intervention, participants were instructed to maintain their habitual sleep schedules. In consideration of the delayed-onset muscle soreness, which typically occurs between 24 to 48 hours following maximal squat intervention.The sleep group was instructed to engage in a minimum of six hours of sleep over the course of the 24-hour observation period.

Non-sleep group

The participants were permitted to sleep for a maximum of four hours in total over the course of the 24-hour period in non-sleep group.

Group Type ACTIVE_COMPARATOR

Non-sleep

Intervention Type OTHER

A similar delayed-onset muscle soreness inducing protocol was applied to the sleep group.Participants in the non-sleep group were subjected to sleep restriction. The participants were permitted to sleep for a maximum of four hours in total over the course of the 24-hour period in non-sleep group.

Interventions

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Sleep

A training programme was devised which involved the participants performing maximum squat repetitions with their own body weight as a workload, in order to induce delayed-onset muscle soreness in the quadriceps. Before the maximum squat repetition, all participants performed a warm-up programme including 5 minutes of walking. Participants were instructed to perform the maximum number of repetitions within the one minute allotted for each set of squats and, after a 10-second rest period, to continue the programme in the same cycle until exhaustion. In the initial 24-hour period following the intervention, participants were instructed to maintain their habitual sleep schedules. In consideration of the delayed-onset muscle soreness, which typically occurs between 24 to 48 hours following maximal squat intervention.The sleep group was instructed to engage in a minimum of six hours of sleep over the course of the 24-hour observation period.

Intervention Type OTHER

Non-sleep

A similar delayed-onset muscle soreness inducing protocol was applied to the sleep group.Participants in the non-sleep group were subjected to sleep restriction. The participants were permitted to sleep for a maximum of four hours in total over the course of the 24-hour period in non-sleep group.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Asymptomatic individuals
* Aged 18-25 years

Exclusion Criteria

* Those who have functional exercise restrictions,
* Those with chronic cardiac or pulmonary diseases such as chronic obstructive pulmonary disease (COPD), asthma, interstitial lung disease and heart failure that may affect respiratory muscle strength and respiratory functions,
* Those with orthopedic problems, persistent neck and back pain and/or radiculopathy that prevent them from participating in the study,
* Those with diagnosed psychiatric disorders,
* Participants with cooperation problems that may prevent evaluations and treatment will not be included in the study.

Minimum Eligible Age

18 Years

Maximum Eligible Age

25 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes