Testing the Reliability of Kinovea Video Analysis Software in Measuring Knee and Hip Angles During Sit-to-Stand Tasks

NCT07676149 — Not yet recruiting, 35 participants, Ankara Yildirim Beyazıt University

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Reliability of Kinovea for Knee and Hip Angle Measurements During Sit-to-Stand

Registry	NCT07676149
Status	Not yet recruiting
Study type	Observational
Enrollment	35 (Estimated)
Sponsor	Ankara Yildirim Beyazıt University (Other)
Conditions	Biomechanical Phenomena, Healthy Volunteers
Dates	start 2026-06-29 (estimated), primary completion 2026-07-20 (estimated), completion 2026-07-20 (estimated), first posted 2026-06-30, last updated 2026-06-30
Locations	1 site in Turkey (Türkiye)

-Summary

The purpose of this study is to evaluate the intra-observer and inter-observer reliability of the Kinovea video analysis software in measuring knee and hip angles during the sit-to-stand movement. Participants will perform sit-to-stand tasks while being video-recorded. The recorded movements will be analyzed using the Kinovea software to determine the consistency and reliability of joint angle measurements.

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+Arms and interventions

Arm	Type	Interventions	Description
Healthy Adults			The study consists of a single group. This group will comprise healthy individuals who meet the predefined inclusion and exclusion criteria.

+Outcome measures

Primary outcomes

Hip Flexion [At baseline (single video recording session)]: Participants will perform a sit-to-stand task using a standard chair while lower extremity movements are recorded with a camera. The recorded videos will be transferred to the Kinovea software for the measurement of hip joint angles. To facilitate angle calculation, anatomical landmarks including the greater trochanter, the longitudinal axis of the trunk, and the midpoint of the thigh will be marked on the participant's clothing. Hip joint angles will then be analyzed using the angle measurement tool available in the software. Measurements will be performed independently by three physiotherapists at one-week intervals.
Knee Flexion [At baseline (single video recording session)]: Participants will perform a sit-to-stand task using a standard chair while lower extremity movements are recorded with a camera. The recorded videos will be transferred to the Kinovea software for knee joint angle analysis. To calculate knee joint angles, anatomical landmarks including the greater trochanter, lateral femoral condyle, and lateral malleolus will be marked on the participant's clothing. Knee joint angles will then be analyzed using the angle measurement tool within the software. Measurements will be performed independently by three physiotherapists at one-week intervals.

+Eligibility

Sex: All, ages: 18 Years to 45 Years, accepts healthy volunteers

Inclusion Criteria:

* Be between the ages of 18 and 45
* Have a body mass index (BMI) between 18 and 25 kg/m²
* Be able to sit down and stand up independently
* Be a volunteer

Exclusion Criteria:

* Having previously undergone lower extremity and spinal surgery
* Having a neurological, orthopedic, or vestibular condition that may affect balance and muscle strength
* Having sustained a lower extremity and/or spinal injury within the last 6 months
* Having spinal problems such as scoliosis or lumbar disc herniation
* Having congenital orthopedic problems such as hemimelia, dysmelia, or leg length discrepancy
* Being pregnant

+Locations (1)

Facility	City	Country	Status
Ankara Yıldırım Beyazıt University	Ankara	Turkey (Türkiye)