Skip to main content
OpenTrials
Active, Not Recruiting

NCT Number: NCT06949371

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

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.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Notify Me

Key information

Conditions

Chronotype

Age range

45 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Istanbul Medipol University

Istanbul, Turkey (Türkiye)

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Morning chronotype

Other

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 chronotype

Other

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.

Primary outcomes

  1. 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).

  2. Single-leg standing test

    Time frame: 20 minutes

    This test measures a person's standing ability and balance.

  3. 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.

  4. 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.

  5. 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.

Sponsors and collaborators

Lead sponsor

Istanbul Medipol University Hospital

Other

Registry information

Acronym: Chronotype

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Apr 29, 2025
Registry last updated
May 30, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.