Healthy VolunteersNCT07334808
Test-Retest Reliability of Grip Force Sense for Proprioception Assessment
An observational study of Healthy Volunteers, run by Kutahya Health Sciences University at 1 site in Turkey (Türkiye).
Trial summary
The aim of this study is to investigate the test-retest reliability of the grip force sense, a component of proprioception, using a dynamometer that is easily accessible and usable in a clinical setting. This provides an accessible assessment method for research in the field of proprioception. Read more about this study
- Who is it for?
- Ages 18 to 24 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy Volunteers
- How many people
- 55 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 13 Jan 2026to 19 Dec 2026
- Phase
- Observational
- 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 18 to 24 years
- All sexes
- Healthy volunteers accepted
- Adult
Study population: The study population consisted of healthy volunteers aged between 18 and 24 years without any history of previous hand surgery or presence of active pathology/pain in the hand.
Who may be able to join
- Age 18-24 years
- Volunteering to participate
Who cannot join
- Having a history of hand surgery
- Having any active pathology or pain complaints in the hand
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
Kutahya Health Science University
Kütahya
Emrah Afsar, Phd, 5062527008, emrah.afsar@ksbu.edu.tr
Emrah Afsar, Phd
About this study
Official title: Test-Retest Reliability of Grip Force Sense for Proprioception Assessment in Healthy Participants
The aim of this study is to investigate the test-retest reliability of the grip force sense, a component of proprioception, using a dynamometer that is easily accessible and usable in a clinical setting. This provides an accessible assessment method for research in the field of proprioception.
Read the detailed description
Participants aged 18-24 who are willing to participate in the study will be included. The necessary demographic information will be obtained using a data form. Participants will be seated in a chair with back support. Participants will perform isometric grip tasks with their arms at their sides, elbows flexed at 90°, and wrists in a neutral position. Subsequently, to assess participants' grip force sense, they will be measured on how accurately they can perform the applied 'force reproduction tasks'. Participants will be subjected to three different target force levels (10%, 30%, and 50% MVIC). A total of 9 trials will be conducted, with three repetitions for each force level. Participants will perform these 9 trials in two separate sessions (Session 1 and Session 2). The sessions will be conducted 7 days apart, in the same laboratory environment and by the same researcher. This will allow for the assessment of the test-retest reliability of the grip force sense. Throughout this process, grip strength will be measured using a digital hand dynamometer. Force values will be observed via a digital monitor. Three different error types will be calculated from the data related to the force reproduction task: (1) AE (Absolute Error), (2) CE (Constant Error), and (3) VE (Variable Error). Minimum-maximum values, mean and standard deviation will be used in the evaluation of continuous data, while frequency distributions and percentages will be used for categorical data. The data of the study will be analysed using IBM SPSS Statistics version 21.1 (IBM Corp., Armonk, NY) statistical package programmes. In all analyses, p<0.05 will be considered statistically significant.
- Conditions
- Healthy Volunteers
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| All Participants | Healthy volunteers. All participants will be assessed at baseline and re-assessed after a 1-week interval to determine test-retest reliability. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Absolute Error (AE)
Absolute Error (AE) represents the absolute difference between the target force and the reproduced force, without regard to direction. It reflects the overall accuracy of the force reproduction task.
Measured: Baseline and 1 week
Constant Error (CE)
Constant Error (CE) represents the directional difference between the target force and the reproduced force. It indicates the participant's directional bias (overshooting or undershooting the target).
Measured: Baseline and 1 week
Variable Error (VE)
Variable Error (VE) represents the variability or consistency of the participant's performance across trials, regardless of the target. It reflects the consistency of force reproduction.
Measured: Baseline and 1 week
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Jan 2026
- Study start13 Jan 2026
- Primary completion12 Dec 2026 (estimated)
- Study completion19 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Healthy VolunteersStudies of the same condition, open and under way.
- More trials run by Kutahya Health Sciences UniversityThe sponsor's other registered studies.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 55 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Kutahya Health Sciences University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Emrah Afsar, Kutahya Health Sciences University
- Investigators
- Emrah Afsar, Phd, Principal investigator, Kutahya Health Science University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07334808
- Sponsor's protocol ID
- 2025-a
- Status last verified
- Jan 2026
- First submitted
- 31 Dec 2025
- Last updated
- 15 Jan 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 15 Jan 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Test-Retest Reliability of Grip Force Sense for Proprioception Assessment in Healthy Participants
- ClinicalTrials.gov ID
- NCT07334808
- Acronym / sponsor ID
- 2025-a
- Conditions
- Healthy Volunteers
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 55 participants (estimated)
- Lead sponsor
- Kutahya Health Sciences UniversityUniversity, hospital or other
- Study start
- 13 Jan 2026 (actual)
- Primary completion
- 12 Dec 2026 (estimated)
- Study completion
- 19 Dec 2026 (estimated)
- First posted
- 12 Jan 2026 (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 test-retest reliability of the grip force sense, a component of proprioception, using a dynamometer that is easily accessible and usable in a clinical setting. This provides an accessible assessment method for research in the field of proprioception.
Detailed description
Participants aged 18-24 who are willing to participate in the study will be included. The necessary demographic information will be obtained using a data form. Participants will be seated in a chair with back support. Participants will perform isometric grip tasks with their arms at their sides, elbows flexed at 90°, and wrists in a neutral position. Subsequently, to assess participants' grip force sense, they will be measured on how accurately they can perform the applied 'force reproduction tasks'. Participants will be subjected to three different target force levels (10%, 30%, and 50% MVIC). A total of 9 trials will be conducted, with three repetitions for each force level. Participants will perform these 9 trials in two separate sessions (Session 1 and Session 2). The sessions will be conducted 7 days apart, in the same laboratory environment and by the same researcher. This will allow for the assessment of the test-retest reliability of the grip force sense. Throughout this process, grip strength will be measured using a digital hand dynamometer. Force values will be observed via a digital monitor. Three different error types will be calculated from the data related to the force reproduction task: (1) AE (Absolute Error), (2) CE (Constant Error), and (3) VE (Variable Error). Minimum-maximum values, mean and standard deviation will be used in the evaluation of continuous data, while frequency distributions and percentages will be used for categorical data. The data of the study will be analysed using IBM SPSS Statistics version 21.1 (IBM Corp., Armonk, NY) statistical package programmes. In all analyses, p<0.05 will be considered statistically significant.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| All Participants | – | –Healthy volunteers. All participants will be assessed at baseline and re-assessed after a 1-week interval to determine test-retest reliability. |
Who may qualify
- Ages
- 18 to 24 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- The study population consisted of healthy volunteers aged between 18 and 24 years without any history of previous hand surgery or presence of active pathology/pain in the hand.
Key inclusion criteria (2 listed)
- Age 18-24 years
- Volunteering to participate
Key exclusion criteria (2 listed)
- Having a history of hand surgery
- Having any active pathology or pain complaints in the hand
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Absolute Error (AE)
Time frame: Baseline and 1 week
Absolute Error (AE) represents the absolute difference between the target force and the reproduced force, without regard to direction. It reflects the overall accuracy of the force reproduction task.
Constant Error (CE)
Time frame: Baseline and 1 week
Constant Error (CE) represents the directional difference between the target force and the reproduced force. It indicates the participant's directional bias (overshooting or undershooting the target).
Variable Error (VE)
Time frame: Baseline and 1 week
Variable Error (VE) represents the variability or consistency of the participant's performance across trials, regardless of the target. It reflects the consistency of force reproduction.
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 15 Jan 2026.
Related trials for Healthy Volunteers
Not yet recruiting
Neuroergonomic Analysis of a Brain-Computer Interface Device (BCI)
Healthy Volunteers - Male and Female
RecruitingPhase 1
First-in-Human Trial to Assess REGN20423 in Healthy Adult Participants and Adult Participants With Atopic Dermatitis
Healthy Volunteer, Atopic Dermatitis
Not yet recruitingObservational study
Establishment of Biobank of Nasal Epithelium Samples From Healthy Volunteers
Healthy
RecruitingObservational study
Improved Methods of Cell Selection for Bone Marrow Transplant Alternatives
Graft-Versus-Host Disease, Graft-versus-leukemia
Not yet recruitingObservational study
Screening Protocol
Pain
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.
Emrah Afsar, Phd principal investigator
Kutahya Health Science University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Healthy Volunteers, run by Kutahya Health Sciences University 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 2 inclusion and 2 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: looking for participants now, as of the sponsor's last update on 15 Jan 2026. 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?
Contact Emrah Afsar, Phd (5062527008, emrah.afsar@ksbu.edu.tr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Absolute Error (AE) (time frame: Baseline and 1 week). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 15 Jan 2026.