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SleepNCT02082600

Effects of Sleep Deprivation on Blood Hormones and Inflammatory Status After Exercise Induced-muscle Damage

A study testing Sleep deprivation and Normal sleep in people with Sleep and Sleep Deprivation, run by Federal University of São Paulo at 1 site in Brazil.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

The aims of this study are examine the effects of sleep deprivation in muscle recovery after a maximum eccentric resistance exercise session performed on an isokinetic dynamometer (24 series of 10 repetitions). The sample will consist of 10 men, sedentary, clinically healthy, aged between 20 and 31 years old. Read more about this study

Who is it for?
Ages 20 to 31 years, men onlyHealthy volunteers can take part
Conditions the study is for
Sleep, Sleep Deprivation
What is being tested?
Sleep deprivation and Normal sleep
Could I receive a placebo?
No, everyone receives an active treatment
How many people
10 participants
Where
1 siteBrazil
Study dates
Jul 2013to Dec 2013
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 20 to 31 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • healthy subjects
  • sedentary
  • sleep duration between 6-8 hours peer night

Who cannot join

  • smokers
  • use vitamin supplements, like C and E
  • drink two doses of alcohol/day or > 4 doses in one occasion
  • use of anti-inflammatory drugs
  • antilipidemic drugs
  • anemia
Show all 12Show fewer
  • muscle or joint diseases
  • cardiovascular diseases
  • diabetes
  • renal diseases
  • sleep disturbances
  • breathing disorders

Trial locations and contacts

1 site in 1 country.

Brazil1 site
  • Associação Fundo de Incentivo à Pesquisa

    São Paulo, São Paulo, 04020-050

Other trials in Brazil

About this study

The aims of this study are examine the effects of sleep deprivation in muscle recovery after a maximum eccentric resistance exercise session performed on an isokinetic dynamometer (24 series of 10 repetitions). The sample will consist of 10 men, sedentary, clinically healthy, aged between 20 and 31 years old. Two experimental groups will be developed: EXE-SLEEP, in which subjects will perform the exercise protocol (~18:00-19:00) and will be subject to normal period of sleep for 3 nights; EXE-TOTAL, in which subjects will perform the same exercise protocol and will be sleep deprived for 60 hours, followed by one night of sleep rebound.

Read the detailed description

The blood parameters analyzed will be:

  • Creatine kinase and myoglobin: before, immediately after, 2, 4, 12, 24, 36, 48, and 60 hours after exercise protocol.
  • Total and free testosterone, IGF-1, and cortisol: before, immediately after, 2, 4, 12, 24, 36, 48, and 60 hours after exercise protocol. Moreover, from 19:00 of the second day to 19:00 of the third day it will be collected blood samples every 2 hours.
  • GH: during the second night, GH will be evaluated every 1 hour, from 23:00 to 07:00.
  • TNF-alfa, IL-6, IL-1 beta, IL-10, and IL-1ra: before, immediately after, and 2 hour after exercise, as well every 4 hours from 19:00 of the second day to 19:00 of the third day.

It will be evaluated isometric strength every 12 hours, as well visual analog scale of pain.

Being tested
Sleep deprivation, Normal sleep
Medical subject headings
Sleep Deprivation

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Sleep deprivationOther

    Also called Sleep and muscle recovery

    This group will perform 24 sets of 10 maximum repetitions of eccentric contractions for quadriceps and than will keep awake for 60 hours (2 nights), followed by 1 night of sleep, all inside the lab. During whole protocol, it will be collected several blood samples for evaluation of hormones, cytokines and muscle damage parameters. It will be also evaluated isometric strength and pain.

  • Normal sleepOther

    This group will perform 24 sets of 10 maximum repetitions of eccentric contractions for quadriceps and and will be able to sleep the 3 nights. During whole protocol, it will be collected several blood samples for evaluation of hormones, cytokines and muscle damage parameters. It will be also evaluated isometric strength and pain.

Study groups in NCT02082600
Study groupRoleWhat they receive
Sleep deprivationExperimentalExercise induced-muscle damage protocol followed by 60h of sleep deprivation (two nights) and one night of normal sleep (rebound).
Receives: Other: Sleep deprivation
Normal sleepExperimentalExercise induced-muscle damage protocol followed by 3 nights of normal sleep
Receives: Other: Normal sleep

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change from baseline in isometric strength

    Measured: Before exercise, immediatly after, 12, 24, 36, 48, and 60 hours after exercise induced-muscle damage

Secondary outcomes (1)
  1. Area Under Curve for serum total and free testosterone, IGF-1, and cortisol

    Measured: Blood samples will be collected every 2 hours, for 24 hours.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted10 Mar 2014 (estimated)
  2. Study startJul 2013
  3. Primary completionDec 2013

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Crossover
Masking
None (open label)
Enrolment
10 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02082600
Sponsor's protocol ID
2010070050
Status last verified
Mar 2014
First submitted
6 Mar 2014
Last updated
11 Mar 2014
Results posted
No
Data monitoring committee
Yes

Questions about this trial

What is this clinical trial studying?

A study testing Sleep deprivation and Normal sleep in people with Sleep and Sleep Deprivation, run by Federal University of São Paulo at 1 site in Brazil.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 11 Mar 2014. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Brazil. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change from baseline in isometric strength (time frame: Before exercise, immediatly after, 12, 24, 36, 48, and 60 hours after exercise induced-muscle damage). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 Mar 2014.

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