Effects of Arm Measurements on Upper Limb Skills and Reaction Time

Istinye University46 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

Purpose

OTHER

Masking

NONE

Enrollment

Conditions

Healthy

Interventions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 25 YearsHealthy volunteers:

Medical Language ↔ Plain English

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

Outcomes

Primary Outcomes

Upper Extremity Anthropometric Measurements

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

Time frame: Baseline

Functional Upper Extremity Skills (Purdue Pegboard Test)

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.

Time frame: Baseline

Reaction Time (Nelson Hand Reaction Test)

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.

Time frame: Baseline

Effects of Arm Measurements on Upper Limb Skills and Reaction Time

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes