A Vision-Based Characterization of Human Movement Scaling in Large-Amplitude Tasks

NCT07387887 | Not Yet Recruiting

• 1 other identifier: Gebze Technical Uni
• Study Type: interventional
• Target: 26
• Locations: 0 countries
• Sites: N/A

Brief Summary

This pilot study investigates the feasibility of objectively quantifying movement amplitude and amplitude decay during large-amplitude exercises using RGB camera-based video analysis in healthy volunteers. Six large-amplitude exercises are recorded across repeated trials, with the first repetition clinically confirmed as the individual's maximum reference. Movement amplitude is quantified using pose-based kinematic measures and complemented by an exploratory self-supervised visual transformer approach to characterize repetition-wise changes relative to the reference execution. The study aims to determine whether camera-based methods can detect amplitude decay patterns and identify moments requiring clinical verbal cues, thereby supporting future objective monitoring and feedback in large-amplitude exercise training.

Conditions

Digital Technology; Healthy

Keywords

Exercise; Motion Analysis; Video-recording; artificial intelligence

Outcome Measures

Primary Outcomes (1)

• Change in Movement Amplitude Across Repetitions

  Movement amplitude will be quantified for each repetition of six large-amplitude exercises using normalized, RGB camera-based pose estimation. Amplitude decay will be defined as the change in movement amplitude across repeated executions within each exercise, reflecting repetition-related reduction in movement scali

  Baseline

Secondary Outcomes (3)

• Reference-Based Visual Similarity Score

  Baseline

• Repetition-Wise Amplitude Decay Trend

  Baseline

• Association Between Kinematic Amplitude and Visual Representation Measures

  Baseline

Study Arms (1)

Healthy Volunteers - Observational Arm

EXPERIMENTAL

No Intervention / Observational: All participants are healthy adult volunteers who perform standardized large-amplitude exercises while being video recorded. No therapeutic intervention, randomization, or group allocation is applied. All participants undergo the same exercise protocol and data collection procedures.

Other: Large-Amplitude Exercise Observation and Video Recording

Interventions

Large-Amplitude Exercise Observation and Video Recording OTHER

Participants perform six standardized large-amplitude exercises (Floor-to-Ceiling Reach, Forward Step, Side Step, Sit-to-Stand, Forward Reach to Grasp and Release an Object, and Big Walking). Each exercise is repeated eight times while full-body movement is recorded using an RGB camera. The first repetition of each exercise is clinically confirmed as the participant's maximum movement amplitude and used as a reference for subsequent observational analysis. No therapeutic manipulation or feedback is provided beyond standard verbal confirmation.

Healthy Volunteers - Observational Arm

Eligibility Criteria

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

You may qualify if:

• Ability to stand, walk, reach, step, and perform sit-to-stand movements independently without assistance.
• No self-reported or clinically diagnosed neurological, musculoskeletal, or vestibular disorders.
• Normal or corrected-to-normal vision sufficient to follow visual instructions.

You may not qualify if:

• History of neurological disorders (e.g., Parkinson's disease, stroke, multiple sclerosis, traumatic brain injury).
• History of major musculoskeletal injury or surgery affecting upper or lower extremities that limits movement.
• Presence of balance disorders or vestibular dysfunction.
• Cardiovascular, respiratory, or metabolic conditions that may limit safe participation in physical exercise.
• Current pain, dizziness, or excessive fatigue during movement or exercise.
• Pregnancy or any condition for which moderate-intensity physical activity is contraindicated.
• Use of assistive devices for walking or balance.
• Refusal or inability to provide consent for RGB video recording.

Sponsors & Collaborators

• Biruni University: lead
• Gebze Technical University: collaborator

MeSH Terms

Conditions

Motor Activity

Condition Hierarchy (Ancestors)

Behavior

Central Study Contacts

Güzin Kaya Aytutuldu

CONTACT

05366265884; guzinkaya14@gmail.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Masking Details: This study employs single-level masking at the participant level. Participants are blinded to the specific analytical objectives and outcome measures of the study. While participants are informed that their movements are being video recorded during large-amplitude exercises, they are not informed about the criteria used to evaluate movement amplitude, repetition-wise changes, or the reference-based analysis approach.
• Purpose: SCREENING
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor

Model Details: The proposed model is designed to characterize movement scaling during large-amplitude exercises using RGB video recordings. It combines markerless pose-based kinematic analysis with an exploratory data-driven visual representation approach to quantify repetition-wise changes in movement execution relative to an individualized reference.

Study Record Dates

• First Submitted: January 23, 2026
• First Posted: February 4, 2026
• Study Start: January 30, 2026
• Primary Completion: April 30, 2026
• Study Completion: May 30, 2026
• Last Updated: February 4, 2026

Record last verified: 2026-01

Data Sharing

• IPD Sharing: Will not share