Healthy ParticipantsNCT07572474
Correlation Between Pinch Grip and Handwriting in School-Age Children
An observational study of Healthy Participants, run by October 6 University at 1 site in Egypt.
Trial summary
Background: Good handwriting is an important daily skill for school-aged children, helping them to learn and communicate effectively. While experts believe that fine motor skills of the hand, like the strength of a child's pinch grip, might be important for handwriting, we don't yet fully understand the connection… Read more about this study
- Who is it for?
- Ages 9 to 10 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy Participants
- How many people
- 70 participants
- Where
- 1 siteEgypt
- Study dates
- 1 May 2023to 1 May 2026
- How long will I take part?
- 1 Day
- Phase
- Observational
- Are there results?
- None posted in the registry
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 9 to 10 years
- All sexes
- Healthy volunteers accepted
- Child
Study population: Children aged 9 to 10 years were recruited from primary schools in October 6 City, Giza Governorate, Egypt. The population includes both male and female children who are typically developing, without diagnosed neurological, developmental, or cognitive disorders that would affect hand function or handwriting ability.
Who may be able to join
- Age between 9 and 10 years old
- Both genders (male and female)
- Able to understand and follow simple instructions (IQ level not less than 50)
- No visual or auditory problems
- Not taking special medications affecting mental functions
Who cannot join
- Children with Attention Deficit Hyperactivity Disorder (ADHD)
- Dysgraphia
- Cognitive developmental disorder
Trial locations and contacts
1 site in 1 country.
Egypt1 site
Faculty of Physical Therapy, October 6 University
Giza, Giza Governorate, 123
About this study
Background: Good handwriting is an important daily skill for school-aged children, helping them to learn and communicate effectively. While experts believe that fine motor skills of the hand, like the strength of a child's pinch grip, might be important for handwriting, we don't yet fully understand the connection between the two.
Purpose: The purpose of this study is to measure the possible relationship between pinch grip strength and handwriting quality in school-aged children.
Study Details: This study will enroll approximately 100 children between 9 and 11 years old from physical therapy clinics in Egypt. Participating children will be asked to complete two simple tasks. First, they will be asked to write 10 lines of text. Their handwriting will then be scored using a standardized scale (the Handwriting Legibility Scale). Second, their pinch grip strength will be measured using a specialized mechanical device called a pinch gauge. The investigators will then analyze the data to see if a relationship exists between pinch grip strength and handwriting performance.
Read the detailed description
This is an observational, cross-sectional study. The purpose of this study is to evaluate the correlation between palmar pinch grip strength and handwriting legibility in children aged 9-10 years. Approximately 100 participants from both sexes will be recruited from different schools.
Upon enrollment, participants will undergo a single assessment session. Outcome measures will be collected in the following order:
Handwriting Assessment: Each participant will be asked to write 10 lines on A4 paper within a six-minute time limit. The written content will then be assessed using the Handwriting Legibility Scale (HLS). The HLS provides an overall assessment to identify difficulties in producing legible and/or sufficiently fast handwriting. Total scores are interpreted as Good Handwriting (5-10), Legible Handwriting (11-15), or Poor Handwriting (16-25).
Pinch Grip Assessment: Palmar pinch grip strength will be measured using a Baseline mechanical pinch gauge in kilograms. The testing position will be standardized according to the guidelines from the American Journal of Occupational Therapy. The subject will be seated with the shoulder adducted and neutrally rotated, elbow flexed at 90°, forearm in a neutral position, and wrist between 0-15° extension and 0-15° ulnar deviation. For the hand used for writing, three successive trials will be performed, and the scores will be recorded.
For the primary analysis, Pearson's correlation coefficient will be used to assess the relationship between the total HLS score and the mean pinch grip strength score, with statistical significance set at p < 0.05. The null hypothesis is that there is no correlation between pinch grip strength and handwriting quality.
- Conditions
- Healthy Participants
- Keywords
- Pinch grip strength, Handwriting legibility
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 | Children aged 9-10 years were recruited from primary schools in October 6 City, Giza Governorate, Egypt. All participants undergo the same assessments: pinch grip strength measurement and handwriting legibility evaluation. No interventions are administered. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Handwriting Legibility Scale (HLS) Score
The Handwriting Legibility Scale (HLS) is a standardized tool that assesses the overall legibility of handwriting. It contains five components, each rated on a 5-point scale (1-5), with higher scores indicating poorer performance. Total scores range from 5 to 25, interpreted as good handwriting (5-10), legible handwriting (11-15), or poor handwriting (16-25).
Measured: Baseline (single assessment visit)
Secondary outcomes (1)
Palmar Pinch Grip Strength
Maximum palmar pinch grip strength measured using a Baseline mechanical pinch gauge. Participants are seated with standardized positioning (shoulder adducted, elbow at 90°, forearm neutral, wrist 0-15° extension and 0-15° ulnar deviation). Three successive trials are performed for the writing hand, and the scores are recorded.
Measured: Baseline (single assessment visit)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 May 2026
- Study start1 May 2023
- Primary completion1 May 2026
- Study completion1 May 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Healthy ParticipantsStudies 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
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 70 participants (actual)
- Target duration
- 1 Day
Sponsor and investigators
- Lead sponsor
- October 6 University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Walid Saber Hussain, October 6 University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07572474
- Sponsor's protocol ID
- P.T.REC/012/004847
- Status last verified
- Jul 2026
- First submitted
- 1 May 2026
- Last updated
- 13 Jul 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: The study team has not yet made a final decision about sharing IPD. Any future decision would require additional ethical review and approval from the Research Ethics Committee, as the current informed consent does not explicitly include data sharing for secondary research purposes.
Study at a glance
From the registry record, last updated by the sponsor on 13 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Correlation Between Pinch Grip and Handwriting in School-Age Children
- ClinicalTrials.gov ID
- NCT07572474
- Acronym / sponsor ID
- P.T.REC/012/004847
- Conditions
- Healthy Participants
- Keywords
- Pinch grip strength, Handwriting legibility
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 70 participants (actual)
- Lead sponsor
- October 6 UniversityUniversity, hospital or other
- Study start
- 1 May 2023 (actual)
- Primary completion
- 1 May 2026 (actual)
- Study completion
- 1 May 2026 (actual)
- First posted
- 7 May 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.
Background: Good handwriting is an important daily skill for school-aged children, helping them to learn and communicate effectively. While experts believe that fine motor skills of the hand, like the strength of a child's pinch grip, might be important for handwriting, we don't yet fully understand the connection between the two.
Purpose: The purpose of this study is to measure the possible relationship between pinch grip strength and handwriting quality in school-aged children.
Study Details: This study will enroll approximately 100 children between 9 and 11 years old from physical therapy clinics in Egypt. Participating children will be asked to complete two simple tasks. First, they will be asked to write 10 lines of text. Their handwriting will then be scored using a standardized scale (the Handwriting Legibility Scale). Second, their pinch grip strength will be measured using a specialized mechanical device called a pinch gauge. The investigators will then analyze the data to see if a relationship exists between pinch grip strength and handwriting performance.
Detailed description
This is an observational, cross-sectional study. The purpose of this study is to evaluate the correlation between palmar pinch grip strength and handwriting legibility in children aged 9-10 years. Approximately 100 participants from both sexes will be recruited from different schools.
Upon enrollment, participants will undergo a single assessment session. Outcome measures will be collected in the following order:
Handwriting Assessment: Each participant will be asked to write 10 lines on A4 paper within a six-minute time limit. The written content will then be assessed using the Handwriting Legibility Scale (HLS). The HLS provides an overall assessment to identify difficulties in producing legible and/or sufficiently fast handwriting. Total scores are interpreted as Good Handwriting (5-10), Legible Handwriting (11-15), or Poor Handwriting (16-25).
Pinch Grip Assessment: Palmar pinch grip strength will be measured using a Baseline mechanical pinch gauge in kilograms. The testing position will be standardized according to the guidelines from the American Journal of Occupational Therapy. The subject will be seated with the shoulder adducted and neutrally rotated, elbow flexed at 90°, forearm in a neutral position, and wrist between 0-15° extension and 0-15° ulnar deviation. For the hand used for writing, three successive trials will be performed, and the scores will be recorded.
For the primary analysis, Pearson's correlation coefficient will be used to assess the relationship between the total HLS score and the mean pinch grip strength score, with statistical significance set at p < 0.05. The null hypothesis is that there is no correlation between pinch grip strength and handwriting quality.
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
- Target follow-up
- 1 Day
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| All Participants | – | –Children aged 9-10 years were recruited from primary schools in October 6 City, Giza Governorate, Egypt. All participants undergo the same assessments: pinch grip strength measurement and handwriting legibility evaluation. No interventions are administered. |
Who may qualify
- Ages
- 9 to 10 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
- Study population
- Children aged 9 to 10 years were recruited from primary schools in October 6 City, Giza Governorate, Egypt. The population includes both male and female children who are typically developing, without diagnosed neurological, developmental, or cognitive disorders that would affect hand function or handwriting ability.
Key inclusion criteria (5 listed)
- Age between 9 and 10 years old
- Both genders (male and female)
- Able to understand and follow simple instructions (IQ level not less than 50)
- No visual or auditory problems
- Not taking special medications affecting mental functions
Key exclusion criteria (3 listed)
- Children with Attention Deficit Hyperactivity Disorder (ADHD)
- Dysgraphia
- Cognitive developmental disorder
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
Handwriting Legibility Scale (HLS) Score
Time frame: Baseline (single assessment visit)
The Handwriting Legibility Scale (HLS) is a standardized tool that assesses the overall legibility of handwriting. It contains five components, each rated on a 5-point scale (1-5), with higher scores indicating poorer performance. Total scores range from 5 to 25, interpreted as good handwriting (5-10), legible handwriting (11-15), or poor handwriting (16-25).
1 secondary outcome
Palmar Pinch Grip Strength
Time frame: Baseline (single assessment visit)
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Jul 2026.
- Related InfoLink provided by the sponsor.
- Individual participant dataSharing planned: No. The study team has not yet made a final decision about sharing IPD. Any future decision would require additional ethical review and approval from the Research Ethics Committee, as the current informed consent does not explicitly include data sharing for secondary research purposes.
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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.
The record lists no contact. Use the official record to reach the sponsor.
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 Participants, run by October 6 University at 1 site in Egypt.
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 5 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: finished, as of the sponsor's last update on 13 Jul 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 Egypt. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Handwriting Legibility Scale (HLS) Score (time frame: Baseline (single assessment visit)). 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 13 Jul 2026.