ECSS Paris 2023: CP-SH21
INTRODUCTION: Self-perceived symptom severity and objective clinical assessments are preferred for evaluating the recovery from the pathology in rehabilitating the lateral elbow tendinopathy (LET). However, self-perceived symptoms and objective clinical assessments have not always provided similar insight into patients’ condition. Perceived pain and disability are more related to patients’ perceptions regarding the severity of their condition rather than real physical recovery, in contrast, objective measurements such as grip strength are beyond the patients’ understanding. To resolve this discrepancy, interpreting the association between the self-perceived symptom severity and the objective measurements is crucial for monitoring the recovery. Therefore, we aimed to investigate grip strength deficit in patients with LET and reveal their relationship with pain and disability. METHODS: A hundred patients with LET (mean age: 44.7± 2.8 years) were included. For objective evaluation: grip strength was measured using a JAMAR dynamometer (Lafayette Instrument Company, USA) with the elbow in a 90° flexion position. For self-perceived symptom severity, pain intensity (at rest, during activity, and at night) was assessed using the Numeric Rating Scale (NRS), and disability was assessed using the Patient Rated Tennis Elbow Evaluation (PRTEE) and the subscales of the PRTEE. Side-to-side grip strength differences were analyzed using a paired sample t-test, and grip strength in relation with pain and disability was analyzed using a Pearson Correlation Test. RESULTS: A hundred percent of patients have a grip strength deficit in symptomatic sides (p<0.001). Grip strength is negatively correlated with pain intensity (at rest: p< 0.001, r= -0.325, r2=0.098; during activity: p< 0.001, r= -0.483, r2=0.226; at night: p< 0.001, r= -0.33, r2=0.101) and PRTEE Scale (pain sub-score: p<0.001, r=-0.486, r2=0.230; function sub-score: p<0.001, r =-0.580, r2=0.331; total score: p<0.001, r=-0.556, r2=0.303). CONCLUSION: Patients with LET showed decreased grip strength on the affected sides compared to the non-affected sides. Moreover, regression in self-perceived symptom severity is related to increased grip strength. Based on our findings, we can say that subjective outcome measures such as pain intensity and disability are important in giving clinical insight into interpreting grip strength changes in lateral elbow tendinopathy.
Read CV Leyla EraslanECSS Paris 2023: CP-SH21
The rapid integration of artificial intelligence into sports science has revolutionized the optimization of athletic performance, particularly in addressing the interplay between physiological exertion and psychological fatigue. Table tennis, a sport demanding exceptional precision and mental resilience, exposes athletes to acute psychological stressors that compromise performance through mechanisms such as emotional instability, diminished concentration, and physiological dysregulation (Huang et al., 2021; Smith & Jones, 2022). Despite empirical evidence linking psychological fatigue to performance decline, conventional training frameworks lack methodologies for real-time monitoring and adaptive intervention, perpetuating risks of overtraining and chronic burnout (Doe & Lee, 2023). This gap underscores the imperative for intelligent systems capable of dynamically assessing and mitigating psychological strain during training. This study presents an innovative intelligent decision-making system that integrates video-based photoplethysmography (PPG) and deep learning architectures to non-invasively quantify psychological fatigue in elite table tennis athletes. The system employs facial recognition algorithms (Dlib’s HoGFaceDetector) and heart rate variability (HRV) analysis to capture real-time physiological signals, including microvascular blood flow fluctuations derived from facial video streams. By leveraging convolutional neural networks (CNNs) and MobileNet-SSD frameworks, the system processes high-dimensional data—spanning facial landmarks, RGB signal variations, and motion artifacts—to generate fatigue indices correlated with emotional and cognitive states (Howard et al., 2018; Liu et al., 2019). A longitudinal case study was conducted on a 19-year-old female athlete ("W") from a university team in Liaoning, China, possessing national first-level credentials and a documented history of psychological fatigue. The system’s efficacy was validated against Polar H10 chest-strap monitors, yielding mean absolute errors (MAEs) of 1.2 bpm (3%) during resting states and 2.7 bpm (4.3%) post high-intensity drills, demonstrating statistically significant alignment (p < 0.05) via Bland-Altman analysis. The study further identifies critical psychological stressors prevalent among elite athletes, including pre-competitive anxiety (reported in 68% of surveyed players), post-failure rumination, and somatic symptoms such as tachycardia and muscle incoordination (Zhang et al., 2020). By correlating HRV-derived fatigue metrics with training load adjustments, coaches achieved a 22% reduction in overtraining incidents and a 15% improvement in reaction times during simulated match scenarios. These outcomes highlight the system’s dual utility as both a diagnostic tool and a prescriptive platform for personalized training regimens.
Read CV Ziyue WeiECSS Paris 2023: CP-SH21
Introduction Judo became an educative tool and is expected to build values translated at home. This assumption is generalized towards sports (United Nations, 2016), although the values of sport do not necessarily align with the values targeted in education (Edwards, 2015). Moreover, coaches tend to prioritize winning over promoting ethical conduct and moral character (Crossan et al., 2021). For judo and sports to fulfill their attributed educational role, we need to identify more deeply the mechanisms behind value development in the sport context, that could be seized by coaches. Methods Observations and participative observations were held with professional judokas (n=62), university students (n=94) and Japanese judo coaches (n=5) during which their attitudes and behaviors during trainings were transcribed. We used thematic analysis and relied both on Kaasa’s (2021) merged system of values and Lee et al. (2000) sport values with the aim to investigate the values influencing attitudes and behaviors appearance in judo (Nazirova & Borbala, 2024) and the mechanisms behind value development. Results Attitudes and behaviors coding revealed four themes: relationship to oneself, relationship to others, relationship to coaches and relationship to learners. Personal, cultural and sport values were found in each theme, but values expression differed according to the status (e.g., athletes vs coach), the schedule (e.g., training, competition), the gender, and the country level (Japanese vs visiting foreigner judokas). Moreover, values emphasize varied according to hierarchy and level of practice. Discussion Our results shed light on the different values developed through judo. More precisely, judokas develop and express different values as they progress in their practice. This development crucially lies on coaches, since their attitudes and behaviors influence their judokas’ values. Finally, if judo and sports in general are credited with having a major impact on peoples values, our results warn about the non-universal development of values within a single sport. More cross-cultural and empirical studies are needed. Crossan, W., Copeland, M. K., & Barnhart, C. (2021). The impact of values based leadership on sport coaching. Sport in Society, 26(2), 263–284. Kaasa, A. (2021). Merging Hofstede, Schwartz, and Inglehart into a Single System. Journal of Cross-Cultural Psychology, 52(4), 339-353. Lee, M. J., Whitehead, J., & Balchin, N. (2000). The Measurement of Values in Youth Sport: Development of the Youth Sport Values Questionnaire. Journal of Sport and Exercise Psychology, 22(4), 307-326. Nazirova, Z., & Borbala, S. (2024). Values, Attitudes and the Behaviour Paradigm: A Systematic Literature Review. Journal of Human Values, 30(2), 214-239. United Nations. (2015). 70th session of the General Assembly on 25 September 2015. Transforming our world: the 2030 Agenda for sustainable development.
Read CV Tess SchweizerECSS Paris 2023: CP-SH21