Comparison of Hand Grip Strength in Different Shoulder Positions in Geriatric Individuals: Position-Dependent Strength Analysis

NCT07562854 | Not Yet Recruiting

• 1 other identifier: 2026/41
• Study Type: observational
• Target: 40
• Locations: 1 country
• Sites: 1

Brief Summary

The aim of this study is to examine the relationship between hand grip strength, measured in different shoulder positions, and upper extremity muscle strength, and to reveal the clinical significance of position-dependent strength variation.

Conditions

Geriatric; Elderly

Keywords

muscle strenght; hand grip strength; geriatrics; upper extremity muscle strength

Outcome Measures

Primary Outcomes (1)

• Hand grip strength measurements

  Hand grip strength measurements will be performed using a calibrated hydraulic hand dynamometer (JAMAR®, Lafayette Instrument, USA). Measurements will be performed according to the standard protocol recommended by the American Society of Hand Therapists (ASHT): the participant will be positioned in a seated position with shoulder adduction and neutral rotation, elbow 90° flexion, forearm in neutral position, and wrist 0-30° extension (Fess and Moran, 1981; Roberts et al., 2011). Three repetitions will be performed for each position, with a 30-second rest period between repetitions to minimize fatigue, and the highest value (kg) will be used in the analysis. Hand grip strength will be assessed in four different shoulder positions: (1) standard measurement position, (2) shoulder 90° flexion, (3) shoulder 90° abduction, and (4) shoulder 30° extension. The measurement order will be randomized to minimize learning and fatigue effects. All measurements will be performed by the same research

  1 day

Study Arms (1)

Geriartric Indivıduals

This will be done with individuals over 65 years of age.

Other: Muscle Strenght Assessment

Interventions

Muscle Strenght Assessment OTHER

Hand grip strength measurements will be performed using a calibrated hydraulic hand dynamometer (JAMAR®). Measurements will be performed according to the standard protocol recommended by the American Society of Hand Therapists: the participant will be positioned in a seated position with shoulder adduction and neutral rotation, elbow 90° flexion, forearm in neutral position, and wrist 0-30° extension. Three repetitions will be performed for each position, with a 30-second rest period between repetitions to minimize fatigue, and the highest value (kg) will be used in the analysis. Hand grip strength will be assessed in four different shoulder positions: (1) standard measurement position, (2) shoulder 90° flexion, (3) shoulder 90° abduction, and (4) shoulder 30° extension. The measurement order will be randomized to minimize learning and fatigue effects. All measurements will be performed by the same researcher independent of the researcher performing the measurements.

Geriartric Indivıduals

Eligibility Criteria

• Age: 65 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

Individuals over 65 years of age

You may qualify if:

• Being 65 years of age or older
• Being an independent volunteer living in the community
• Being able to actively use the upper extremities
• Having the cognitive level to understand and follow the measurement instructions
• Providing written informed consent to participate in the study.

You may not qualify if:

• Presence of severe shoulder pain or rotator cuff pathology
• Loss of upper extremity function due to rheumatological disease
• Presence of significant visual or vestibular impairment that may affect measurements
• Presence of another systemic or musculoskeletal disease that may prevent the safe and accurate completion of tests
• History of upper extremity surgery or fracture within the last 6 months
• Failure to provide informed consent

Sponsors & Collaborators

• Istanbul University - Cerrahpasa: lead

Study Sites (1)

Balıkesir University

Balıkesir, Turkey (Türkiye)

Location

Related Publications (2)

• Kawase Y, Arai S, Yoshida I, Sawaya Y. Effects of Different Body Postures on Handgrip Strength Measurements Among Young Adults: A Preliminary Comparison of Standing, Chair-Seated, and Wheelchair-Seated Positions. Cureus. 2025 Oct 22;17(10):e95146. doi: 10.7759/cureus.95146. eCollection 2025 Oct.

  PMID: 41281129 RESULT

• Bohannon RW. Grip Strength: An Indispensable Biomarker For Older Adults. Clin Interv Aging. 2019 Oct 1;14:1681-1691. doi: 10.2147/CIA.S194543. eCollection 2019.

  PMID: 31631989 RESULT

Central Study Contacts

GULFİDAN TOKGÖZ, Lecturer, PhD (c)

CONTACT

0552 022 76 32; gulfidan.tokgoz@gmail.com

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Target Duration: 1 Day
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Lecturer, Phd (c)

Study Record Dates

• First Submitted: April 25, 2026
• First Posted: May 1, 2026
• Study Start: May 2, 2026
• Primary Completion (Estimated): May 15, 2026
• Study Completion (Estimated): August 1, 2026
• Last Updated: May 1, 2026

Record last verified: 2026-04

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)