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

NCT06949371 | Active Not Recruiting

• 2 other identifiers: E-10840098-772.02-7691Istanbul Medipol University
• Study Type: interventional
• Target: 40
• Locations: 1 country
• Sites: 1

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.

Conditions

Chronotype

Keywords

Chronotype; muscle strength; balance; functionality

Outcome Measures

Primary Outcomes (5)

• 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).

  20 minutes

• Single-leg standing test

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

  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.

  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.

  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.

  20 minutes

Study Arms (2)

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.

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.

Other: Evening chronotype

Interventions

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.

Morning chronotype group

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.

Evening chronotype group

Eligibility Criteria

• Age: 45 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

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

You may not qualify if:

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

Sponsors & Collaborators

• Istanbul Medipol University Hospital: lead

Study Sites (1)

Istanbul Medipol University

Istanbul, Turkey (Türkiye)

Location

Related Publications (1)

• 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.

  PMID: 30357501 RESULT

Related Links

• The effects of time of day and chronotype on cognitive and physical performance in healthy volunteers

Study Officials

• MERVE YILMAZ MENEK, Assoc. Prof.

  Medipol University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Masking Details: participant are blind in this study.
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: April 22, 2025
• First Posted: April 29, 2025
• Study Start: April 22, 2025
• Primary Completion: June 10, 2025
• Study Completion: July 10, 2025
• Last Updated: May 30, 2025

Record last verified: 2025-05

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)