Browsing by Author "Katashevs, Aleksejs"

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    Assessment of shoulder girdle elevation motion using daid smart shirt : A reliability and validity study
    (SciTePress, 2019) Semjonova, Guna; Vetra, Janis; Okss, Aleksandrs; Katashevs, Aleksejs; Cauce, Vinita; Vilas-Boas, Joao; Pezarat-Correia, Pedro; Cabri, Jan; Rīga Stradiņš University
    Muscle function around the shoulder girdle can be impaired by pain, which leads to abnormal movement e.g. elevation. Movement faults should be assessed specifically, therefore individual sport rehabilitation strategies can be implemented. Smart garments are efficient for upper body movement assessment. There is a lack of literature stating that smart textile garments are reliable and valid for shoulder gridle elevation. The purpose of the study was to examine reliability and validity of the DAid smart shirt during shoulder girdle elevation. Twenty-one female volunteers aged 24.3. (SD3.3), body mass index 19.3 (SD 0.5) were recruited. The DAid smart shirt and 2D movement video analysis software Quintic Biomechanics v26, UK were the assessment tools utilized. Cronbach alpha coefficient and Interclass Correlation Coefficient were calculated to assess the within-session test-retest reliability. Bland - Altman analysis was applied to determine validity. Results: reliability for the right side measures: Cronbach alpha coefficient α ≥ 0.9, ICC ≥ 0.9. Reliability for the left side measures: Cronbach alpha coefficient α ≥ 0.9, ICC ≥ 0.91. Bland-Altman analysis presents that DAid smart shirt measures are valid during shoulder girdle elevation. Conclusion: smart shirt measures are reliable and valid during shoulder girdle elevation movements.
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    Concept Protocol for Developing a DAid® Smart Socks-Based Biofeedback System : Enhancing Injury Prevention in Football Through Real-Time Biomechanical Monitoring and Mixed Reality Feedback
    (2025-02-04) Davidoviča, Anna; Semjonova, Guna; Kamynina, Lydia; Lancere, Linda; Jonāte, Alise; Tomsone, Signe; Katashevs, Aleksejs; Okss, Aleksandrs; Davidovičs, Sergejs; Department of Rehabilitation
    Football players, particularly in youth leagues, face a high risk of lower limb injuries due to improper movement patterns. While programs like FIFA 11+ help reduce injuries, they lack real-time, personalized feedback for biomechanical correction. This concept protocol outlines the development of a DAid® smart socks-based biofeedback system that integrates biomechanical monitoring with mixed reality (MR) feedback to enhance injury prevention. The DAid® smart socks, equipped with pressure sensors and inertial measurement units (IMUs), track plantar pressure distribution and the center of pressure (COP). Real-time feedback is delivered via a Meta Quest 3 MR headset, enabling athletes to adjust movement patterns instantly. This protocol establishes a framework for evaluating the system’s feasibility and effectiveness in optimizing biomechanics and reducing injury risks. By combining wearable technology with MR-based feedback, this study advances injury prevention strategies, with potential applications in rehabilitation and performance training.
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    Smart Textile Sock System for Athletes’ Self-Correction during Functional Tasks: Formative Usability Evaluation
    (2022-06-24) Semjonova, Guna; Davidovica, Anna; Kozlovskis, Nikita; Okss, Aleksandrs; Katashevs, Aleksejs; Department of Rehabilitation
    (1) Background: The development of a lightweight, easy-to-use system that measures the foot’s plantar pressure is becoming an increasingly important area of research in physiotherapy. For further development of the smart sock system, a formative usability study was conducted, where the smart textile sock sensor system was used for self-correction during functional tasks; (2) Methods: Five athletes from the football school participated in the formative usability study. Athletes performed pre-defined functional tasks for self-correction when interacting with the smart textile sock system. Formative usability evaluation methods: effectiveness (task success rate, error rate), efficiency (time-based), satisfaction evaluated by System Usability Scale (SUS); (3) Results: Formative usability indicators: task completeness effectiveness ranged from 40% to 100% in the first-and second-stage tasks. Completed task efficiency time: Stage 1, from 4.2 s (SD 1.3) to 88.8 s (SD 19.8); Stage 2, from 7.2 s (SD 1.9) to 9.6 s (SD 2.1). Satisfaction was assessed by the SUS system user group with 76 points (SD 7.42), which indicates “good” satisfaction; (4) Conclusions: formative usability indicators showed the need for technical improvements to the smart textile sock pressure sensor system. The SUS results indicate “good” satisfaction with the smart textile sock pressure sensor system and its application.