ChronotypeChronotypeNCT06949371
Investigation of the Effects of Chronotype Differences on Balance and Muscle Strength in Young Adults
A study testing Morning chronotype and Evening chronotype in people with Chronotype, run by Istanbul Medipol University Hospital at 1 site in Turkey (Türkiye).
Trial summary
The aim of this study is to investigate the effects of chronotype differences on balance and muscle strength in young adults. Chronotypes of all participants will be determined using the Morningness-Eveningness Questionnaire. Read more about this study
- Who is it for?
- Ages 45 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Chronotype
- What is being tested?
- Morning chronotype and Evening chronotype
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 40 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 22 Apr 2025to 10 Jul 2025
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 45 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- being between 45-65,
- not having any neurological or orthopedic disorder,
- not having a vestibular disease that causes balance problems.
Who cannot join
- trauma history,
- anatomical deformities and skeletal system fractures,
- having a previous injury and the presence of pain that would prevent participation in the tests.
Trial locations and contacts
1 site in 1 country.
About this study
The aim of this study is to investigate the effects of chronotype differences on balance and muscle strength in young adults. Chronotypes of all participants will be determined using the Morningness-Eveningness Questionnaire. All assessment measurements determined for young adult individuals will be performed first at 09:00 in the morning and then again at 19:00 in the evening.
Read the detailed description
The aim of this study is to investigate the effects of chronotype differences on balance and muscle strength in young adults. Inclusion criteria are being between 45-65 years old, not having any neurological or orthopedic disorders, not having a vestibular disease that causes balance problems. Exclusion criteria are trauma history, anatomical deformities and skeletal system fractures, having a previous injury, and the presence of pain that will prevent participation in the tests. Chronotypes of all participants will be determined using the Morningness-Eveningness Questionnaire. All assessment measurements determined for young adult individuals will be performed first at 09:00 in the morning and then again at 19:00 in the evening. Muscle strength and balance assessments made in the morning and evening will be compared. Chronotypes of the participants will be evaluated with the Morningness-Eveningness Questionnaire, their balance will be evaluated with the One-Legged Standing Test, lower extremity muscle strength with a myometer, and their functionality will be evaluated with the Timed Stand-Up-Sit Test and the 30-Second Sit-Up Test.
- Conditions
- Chronotype
- Being tested
- Morning chronotype, Evening chronotype
- Keywords
- Chronotype, muscle strength, balance, functionality
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Morning chronotypeOther
All assessment measurements determined for individuals with morning chronotype will be performed first at 09:00 in the morning and then again at 19:00 in the evening. Muscle strength balance assessments performed in the morning and evening will be compared.
Evening chronotypeOther
All assessment measurements determined for individuals with evening chronotype will be performed first at 09:00 in the morning and then again at 19:00 in the evening. Muscle strength balance assessments performed in the morning and evening will be compared.
| Study group | Role | What they receive |
|---|---|---|
| Morning chronotype group | Experimental | All assessment measurements determined for individuals with morning chronotype will be performed first at 09:00 in the morning and then again at 19:00 in the evening. Receives: Other: Morning chronotype |
| Evening chronotype group | Experimental | All assessment measurements determined for individuals with evening chronotype will be performed first at 09:00 in the morning and then again at 19:00 in the evening. Receives: Other: Evening chronotype |
What is being measured
The primary outcome is the main question the study is designed to answer.
Morningness-Eveningness Questionnaire
A questionnaire form that determines morningness and eveningness types will be used to subjectively evaluate circadian rhythm. defi - nitely morning type (70-86), moderately morning type (59-69), neither type (42-58), moderately evening type (31-41), and defi nitely evening type (16-30).
Measured: 20 minutes
Single-leg standing test
This test measures a person's standing ability and balance.
Measured: 20 minutes
Muscle strength test
Myometry will be used to objectively measure the strength of the quadriceps and hamstring muscles. Myometry is an evaluation method that objectively evaluates muscle strength and provides more sensitive results than manual muscle testing.
Measured: 20 minutes
Timed up and go testTest:
A simple screening test that provides a sensitive and specific measure of fall risk and balance in older adults.
Measured: 20 minutes
30 Second Sit-to-Stand Test
A test that evaluates the participant's sit-to-stand activity, lower extremity muscle strength and balance status.
Measured: 20 minutes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Apr 2025
- Study start22 Apr 2025
- Primary completion10 Jun 2025 (estimated)
- Study completion10 Jul 2025 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for ChronotypeStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Istanbul Medipol University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, merve yilmaz menek, Istanbul Medipol University Hospital
- Investigators
- MERVE YILMAZ MENEK, Assoc. Prof., Principal investigator, Medipol University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06949371
- Sponsor's protocol ID
- E-10840098-772.02-7691
- Other IDs
- Istanbul Medipol University
- Acronym
- Chronotype
- Status last verified
- May 2025
- First submitted
- 22 Apr 2025
- Last updated
- 30 May 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: We can share IPD when it isi necessary.
Publications
Facer-Childs ER, Boiling S, Balanos GM. The effects of time of day and chronotype on cognitive and physical performance in healthy volunteers. Sports Med Open. 2018 Oct 24;4(1):47. doi: 10.1186/s40798-018-0162-z.
PubMed 30357501
Study at a glance
From the registry record, last updated by the sponsor on 30 May 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Investigation of the Effects of Chronotype Differences on Balance and Muscle Strength in Young Adults
- ClinicalTrials.gov ID
- NCT06949371
- Acronym / sponsor ID
- Chronotype / E-10840098-772.02-7691
- Conditions
- Chronotype
- Keywords
- Chronotype, muscle strength, balance, functionality
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Istanbul Medipol University HospitalUniversity, hospital or other
- Study start
- 22 Apr 2025 (actual)
- Primary completion
- 10 Jun 2025 (estimated)
- Study completion
- 10 Jul 2025 (estimated)
- First posted
- 29 Apr 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of this study is to investigate the effects of chronotype differences on balance and muscle strength in young adults. Chronotypes of all participants will be determined using the Morningness-Eveningness Questionnaire. All assessment measurements determined for young adult individuals will be performed first at 09:00 in the morning and then again at 19:00 in the evening.
Detailed description
The aim of this study is to investigate the effects of chronotype differences on balance and muscle strength in young adults. Inclusion criteria are being between 45-65 years old, not having any neurological or orthopedic disorders, not having a vestibular disease that causes balance problems. Exclusion criteria are trauma history, anatomical deformities and skeletal system fractures, having a previous injury, and the presence of pain that will prevent participation in the tests. Chronotypes of all participants will be determined using the Morningness-Eveningness Questionnaire. All assessment measurements determined for young adult individuals will be performed first at 09:00 in the morning and then again at 19:00 in the evening. Muscle strength and balance assessments made in the morning and evening will be compared. Chronotypes of the participants will be evaluated with the Morningness-Eveningness Questionnaire, their balance will be evaluated with the One-Legged Standing Test, lower extremity muscle strength with a myometer, and their functionality will be evaluated with the Timed Stand-Up-Sit Test and the 30-Second Sit-Up Test.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Morning chronotype group | Experimental | Other: Morning chronotypeAll assessment measurements determined for individuals with morning chronotype will be performed first at 09:00 in the morning and then again at 19:00 in the evening. |
| Evening chronotype group | Experimental | Other: Evening chronotypeAll assessment measurements determined for individuals with evening chronotype will be performed first at 09:00 in the morning and then again at 19:00 in the evening. |
Who may qualify
- Ages
- 45 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- being between 45-65,
- not having any neurological or orthopedic disorder,
- not having a vestibular disease that causes balance problems.
Key exclusion criteria (3 listed)
- trauma history,
- anatomical deformities and skeletal system fractures,
- having a previous injury and the presence of pain that would prevent participation in the tests.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Morning chronotypeAll assessment measurements determined for individuals with morning chronotype will be performed first at 09:00 in the morning and then again at 19:00 in the evening. Muscle strength balance assessments performed in the morning and evening will be compared. | Other | Morning chronotype group |
| Evening chronotypeAll assessment measurements determined for individuals with evening chronotype will be performed first at 09:00 in the morning and then again at 19:00 in the evening. Muscle strength balance assessments performed in the morning and evening will be compared. | Other | Evening chronotype group |
Primary outcome
Morningness-Eveningness Questionnaire
Time frame: 20 minutes
A questionnaire form that determines morningness and eveningness types will be used to subjectively evaluate circadian rhythm. defi - nitely morning type (70-86), moderately morning type (59-69), neither type (42-58), moderately evening type (31-41), and defi nitely evening type (16-30).
Single-leg standing test
Time frame: 20 minutes
This test measures a person's standing ability and balance.
Muscle strength test
Time frame: 20 minutes
Myometry will be used to objectively measure the strength of the quadriceps and hamstring muscles. Myometry is an evaluation method that objectively evaluates muscle strength and provides more sensitive results than manual muscle testing.
Timed up and go testTest:
Time frame: 20 minutes
A simple screening test that provides a sensitive and specific measure of fall risk and balance in older adults.
30 Second Sit-to-Stand Test
Time frame: 20 minutes
A test that evaluates the participant's sit-to-stand activity, lower extremity muscle strength and balance status.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 May 2025.
- Results publication: PubMed 30357501Facer-Childs ER, Boiling S, Balanos GM. The effects of time of day and chronotype on cognitive and physical performance in healthy volunteers. Sports Med Open. 2018 Oct 24;4(1):47. doi: 10.1186/s40798-018-0162-z.
- The effects of time of day and chronotype on cognitive and physical performance in healthy volunteersLink provided by the sponsor.
- Individual participant dataSharing planned: No. We can share IPD when it isi necessary.
Related trials for Chronotype
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Sleep, Chronotype, and Prosocial Allocation Decisions
Sleep Quality, Chronotype
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Visual Perception, Binocular Rivalry, and Fatigue-Related Individual Differences in Colour and Illumination Judgement
Colour Perception, Color Perception
Recruiting
Exercise, Chronotype, and Prediabetes
Prediabetes, Overweight , Obesity
Enrolling by invitation
Impact of Chronotype-Based Time-Restricted Eating on Visceral Fat and Metabolic Health in Physically Inactive Adults With Central Obesity
Central Obesity, Time Restricted Eating
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
MERVE YILMAZ MENEK, Assoc. Prof. principal investigator
Medipol University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Morning chronotype and Evening chronotype in people with Chronotype, run by Istanbul Medipol University Hospital at 1 site in Turkey (Türkiye).
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 3 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: under way, not looking for participants, as of the sponsor's last update on 30 May 2025. 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 Turkey (Türkiye). 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?
This study is still under way. Results are not available in the source record yet.
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?
Morningness-Eveningness Questionnaire (time frame: 20 minutes). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06949371, which also lists 1 linked publication.
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 30 May 2025.