Effect of Position on Ankle Dorsiflexor, Hallux Dorsiflexor and Plantar Flexor Muscle Strength: Are Ankle Dorsiflexor and Plantar Flexor Muscle Strengths Greater in the Standing Position Compared to the Supine Position?

NCT07386132 | Completed

• 1 other identifier: 2024-59
• Study Type: interventional
• Target: 33
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to investigate whether there is a difference in ankle dorsiflexor, hallux dorsiflexion and plantar flexor muscle strength measured in the supine position compared with the standing position. Muscle strength assessments are commonly performed in different body positions; however, the effect of weight-bearing and postural demands on ankle muscle strength measurements remains unclear. Understanding the influence of testing position may improve the standardization and clinical interpretation of muscle strength assessments.

Conditions

Ankle Dorsiflexor, Hallux Dorsiflexor and Plantar Flexor Strength

Keywords

Foot biomechanics, muscle strength, dorsiflexion, plantar flexion, hallux dorsiflexion, positional assessment

Outcome Measures

Primary Outcomes (1)

• Isometric Ankle Muscle Strength

  maximum voluntary isometric contraction force of ankle dorsiflexor and plantar flexor muscles measured in supine and standing positions using a custom made force plate

  Day 1 ( Single assessment session)

Secondary Outcomes (1)

• Isometric Hallux Dorsiflexion Strength

  Day 1 ( Single assessment session)

Study Arms (2)

Supine Position

EXPERIMENTAL

Ankle dorsiflexor , hallux dorsiflexor and plantar flexor muscle strength assessed in the supine position.

Other: Body Position During Muscle Strength Assessment

Standing Position

EXPERIMENTAL

Ankle dorsiflexor, hallux dorsiflexor and plantar flexor muscle strength assessed in the standing position.

Other: Body Position During Muscle Strength Assessment

Interventions

Body Position During Muscle Strength Assessment OTHER

Muscle strength was assessed in both supine and standing positions using standardized isometric testing. The order of testing positions and movement directions was randomized, and no visual feedback of force output was provided to participants.

Standing Position; Supine Position

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Healthy adults aged 18 years and older
• No history or clinical diagnosis of lumbar disc herniation
• Ability to stand independently and perform isometric muscle strength testing
• Voluntary participation with written informed consent

You may not qualify if:

• History or clinical diagnosis of lumbar disc herniation
• Professional or elite athletes
• History of lower extremity surgery or neurological disease affecting muscle strength
• Acute musculoskeletal injury at the time of assessment

Sponsors & Collaborators

• Istanbul Physical Medicine Rehabilitation Training and Research Hospital: lead

Study Sites (1)

Istanbul Physical Medicine And Rehabilitation Training And Research Hospital

Istanbul, Istanbul, 34180, Turkey (Türkiye)

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER GOV
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: January 28, 2026
• First Posted: February 4, 2026
• Study Start: November 25, 2024
• Primary Completion: December 17, 2024
• Study Completion: December 17, 2024
• Last Updated: February 9, 2026

Record last verified: 2026-02

Locations

TU (1)