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OpenTrials
Completed

NCT Number: NCT07413380

Effects of Arm Measurements on Upper Limb Skills and Reaction Time

In this study, upper extremity anthropometric characteristics, functional upper extremity skills, and reaction time will be examined in healthy young adults. A total of 46 healthy individuals aged between 18 and 25 years, with no history of systemic disease or upper extremity injury affecting functional performance, will be included. Upper extremity anthropometric measurements, including arm, forearm, and hand lengths and circumferential measurements, will be obtained using standardized procedures. Functional upper extremity skills will be assessed using the Purdue Pegboard Test, and reaction time will be evaluated using the Nelson Hand Reaction Test. Correlation analyses will be performed to examine the relationships between upper extremity anthropometric characteristics, functional upper extremity skills, and reaction time.

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Key information

Conditions

Healthy

Age range

18 year–25 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Istinye University

Istanbul, Zeyti̇nburnu/i̇stanbul, 34010, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Aged between 18 and 25 years
  • No medical condition requiring regular medical supervision
  • No history of upper extremity injury resulting in sequelae or any upper extremity injury within the past year
  • Ability to communicate verbally and in writing in Turkish or English

Exclusion criteria

  • Presence of postural abnormalities, movement restrictions, or pain affecting grasping or upper extremity function, as determined by inspection
  • Adhesions, muscle shortening, or restricted joint range of motion affecting the neck muscles
  • History of cervical canal stenosis or cervical disc herniation
  • Significant impairment of balance system function
  • Visual or sensory function disorders
  • Upper extremity muscle tone disorders, including essential tremor

Treatment and study plan

No interventions

Other

This study is observational in nature and does not include any therapeutic intervention.

Participants will undergo anthropometric measurements and assessments of upper extremity function and reaction time for research purposes only.

Primary outcomes

  1. Upper Extremity Anthropometric Measurements

    Time frame: Baseline

    Arm, forearm, and hand length and circumference measurements (cm).

  2. Functional Upper Extremity Skills (Purdue Pegboard Test)

    Time frame: Baseline

    Functional upper extremity skills will be evaluated using the Purdue Pegboard Test. Performance will be measured as the number of pegs placed within 30 seconds for the dominant hand, non-dominant hand, and both-hands conditions, as well as the total number of components assembled within one minute during the assembly subtest. Higher scores will indicate better functional upper extremity performance.

  3. Reaction Time (Nelson Hand Reaction Test)

    Time frame: Baseline

    Reaction time will be assessed using the Nelson Hand Reaction Test. Reaction time performance will be quantified based on the distance (cm) the ruler falls before being caught, with values converted to reaction time in milliseconds. The average of the best three trials will be used for analysis, with lower values indicating faster reaction time.

Sponsors and collaborators

Lead sponsor

Istinye University

Other

Registry information

Official study title

The Effect of Upper Extremity Anthropometric Characteristics on Functional Upper Extremity Skills and Reaction Time

Important dates

Study start
2026
Primary completion
2026
Study completion
2026
First posted
Feb 17, 2026
Registry last updated
Apr 22, 2026

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.

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