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Investigation of the Effects of Chronotype Differences on Balance and Muscle Strength in Young Adults

Investigation of the Effects of Chronotype Differences on Balance and Muscle Strength in Young Adults

Status
Active, not recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06949371
Acronym
Chronotype
Enrollment
40
Registered
2025-04-29
Start date
2025-04-22
Completion date
2025-07-10
Last updated
2025-05-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronotype

Keywords

Chronotype, muscle strength, balance, functionality

Brief 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. 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.

Interventions

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.

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.

Sponsors

Istanbul Medipol University Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Masking description

participant are blind in this study.

Eligibility

Sex/Gender
ALL
Age
45 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* being between 45-65, * not having any neurological or orthopedic disorder, * not having a vestibular disease that causes balance problems.

Exclusion criteria

* trauma history, * anatomical deformities and skeletal system fractures, * having a previous injury and the presence of pain that would prevent participation in the tests.

Design outcomes

Primary

MeasureTime frameDescription
Morningness-Eveningness Questionnaire20 minutesA 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 test20 minutesThis test measures a person's standing ability and balance.
Muscle strength test20 minutesMyometry 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:20 minutesA simple screening test that provides a sensitive and specific measure of fall risk and balance in older adults.
30 Second Sit-to-Stand Test20 minutesA test that evaluates the participant's sit-to-stand activity, lower extremity muscle strength and balance status.

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026