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.
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
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
The study population consists of volunteer students recruited from the Ankara Yildirim Beyazit University, Department of Physiotherapy and Rehabilitation at the Faculty of Health Sciences.
Other
Cross-sectional
Not listed
Hip Flexion
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
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.
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