Sleeping Habits on Performance Following Sleep Deprivation
NCT ID: NCT05942664
Last Updated: 2024-12-06
Study Results
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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COMPLETED
NA
22 participants
INTERVENTIONAL
2023-06-26
2024-05-06
Brief Summary
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1. Can habitual sleeping habits predict, or do different types of sleepers alter, performance outcomes following sleep deprivation?
2. Does sleep deprivation alter blood pressure, heart rate, or metabolic responses during a 20-minute time trial, and/or are these altered amongst different types of sleepers?
* Participants will be asked to perform 4 performance tests (20-minute time trial), 2 for familiarization, and 2 testing visits (1 under normal sleep and 1 under partial sleep deprivation).
* For 1 week prior to each testing visit, sleep will be tracked using an ActiGraph device.
The investigators hypothesize that habitual early sleepers, poor sleepers, those with greater variability in sleep duration, and females will show the greatest impairments in performance following partial sleep deprivation.
Detailed Description
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Introductory visit: Prior to arriving at the lab, participants will read over and sign the consent form, complete the Pittsburgh Sleep Quality Index (PSQI), complete the Morningness-Eveningness Questionnaire (MEQ), complete a general health questionnaire, and complete the PAR-Q+ remotely. After obtaining consent and upon arriving at the lab, height and weight will be measured. This will be followed by a maximal exercise test to assess peak oxygen uptake (VO2peak) on a cycle ergometer. After this, participants will be given a rest period, which will be followed by the completion of a 5-minute time trial so the participant can get familiarized with pushing themselves during the performance test.
Pre-testing: Participants will be equipped with an ActiGraph device to measure sleeping patterns over a 1-week time frame prior to each testing visit as well as the night prior to each familiarization visit. These data will then be used to determine each participant's sleep-wake schedule for the testing visits. Furthermore, the day prior to each familiarization visit and testing visit, participants will be asked to complete a food diary using an online app (MyFitnessPal), which will ask participants to list the ingredients and quantity of each ingredient consumed for each meal and beverage that day, night and subsequent day. Participants will be asked to abstain from food for 4 hours upon arriving at the lab, prior to each familiarization and testing visit.
Familiarization visits: Upon lab arrival, participants will be provided with a standardized snack, which includes instant Quaker oats mixed with water. The amount will be based on body weight (1 gram of carbohydrates per body weight in kilograms). Following this, the participant will complete a 20-minute time trial on a cycle ergometer.
Testing visits: Upon lab arrival, participants will lay supine quietly, and resting hemodynamic measurements (blood pressure and heart rate) will commence. Following this, participants will consume the same standardized snack as the familiarization visit, and then a 20-minute time trial on a cycle ergometer.
Conditions
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Keywords
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Study Design
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RANDOMIZED
CROSSOVER
DIAGNOSTIC
DOUBLE
Study Groups
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Normal sleep
Participants will be asked to sleep during their normal sleep times prior to this visit
Sleep
Sleep will be restricted to 60% normal sleep duration
Sleep deprivation
Participants will be asked to go to bed normally but wake up earlier, such that normal sleep duration is restricted by 60%. For example, if someone normally sleeps for 8 hours by falling asleep at 11 pm and waking up at 7 am, they will be asked to fall asleep normally (11 pm) and sleep for 3.2 hours, which results in a wake-up time of 2:12 am.
Sleep
Sleep will be restricted to 60% normal sleep duration
Interventions
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Sleep
Sleep will be restricted to 60% normal sleep duration
Eligibility Criteria
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Inclusion Criteria
* Free of known cardiovascular or metabolic diseases or sleep disorders
* No history of smoking (within the past 3 months)
* Able to engage in physical activity assessed through the physical activity readiness questionnaire (PAR-Q+) (answer no to all questions
* No prescription of chronic medications other than oral contraceptives
* Able to abide by sleep protocols for all visits
* Individuals who are able to consume the ingredients of instant oatmeal (whole grain oats, sugar, salt, and natural flavour)
* Individuals who are not pregnant
Exclusion Criteria
* Individuals diagnosed with cardiovascular or metabolic disease or sleep disorders
* Has a history of smoking (within the past 3 months)
* Not ready to engage in physical activity (answer yes to one or more questions in PAR-Q+)
* Individuals with prescription of chronic medications other than oral contraceptives
* Unable to abide by sleep protocols for any testing visit
* Individuals who are unable to consume the ingredients of instant oatmeal (whole grain oats, sugar, salt, and natural flavour)
* Pregnancy
18 Years
50 Years
ALL
Yes
Sponsors
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University of Guelph
OTHER
Responsible Party
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Philip Millar
Associate Professor
Principal Investigators
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Philip Millar
Role: PRINCIPAL_INVESTIGATOR
University of Guelph
Locations
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University of Guelph - Human Cardiovascular Physiology Laboratory
Guelph, Ontario, Canada
Countries
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Other Identifiers
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23-01-019
Identifier Type: -
Identifier Source: org_study_id