Institut National du Sport, de l'Expertise et de la Performance

To (1) report the prevalence of hip pain in professional table tennis players registered at a National Sports Institute, (2) describe their hip pathologies, and (3) evaluate expectations regarding hip pain before and after becoming high-level athletes. Case series. French National Sports Institute. Nineteen professional table tennis players. None. UCLA activity score, training information, prevalence of hip pain, expectations regarding hip pain, and hip joint injuries/pathologies. The cohort comprised 19 table tennis players, 6 women and 13 men, aged 24.9 ± 4.1 years. Before playing table tennis professionally, 8 players thought that becoming high-level players could cause pain at their joints; however, none thought that becoming high-level players could cause pain at their hip joint. Eleven athletes reported experiencing hip pain, with 8 having femoroacetabular impingement (FAI), which was concomitant with chondropathy in 6, hip dysplasia in 5, and coxarthrosis in 3. Five athletes required femoroplasty for FAI or total hip arthroplasty for coxarthrosis. All athletes who underwent surgery returned to sport. At the time of the questionnaire, 15 athletes thought it was common for high-level table tennis players to have hip pain. Professional table tennis players registered at the institute had a high prevalence of hip pain (58%) and FAI (42%), with 26% of athletes requiring surgery. These findings could allow coaches to align expectations in professional table tennis players, as well as to anticipate hip pathologies and design specific prevention programs.

Sport psychology research has shown that athletes might experience self-presentation concerns. However, fairly limited work has examined these specific concerns among athletes experiencing an injury, particularly among adolescent populations. Therefore, the purpose of this qualitative study was to explore the nature, precursors, and implications of injured adolescent athletes' self-presentation concerns. Semi-structured interviews were conducted with female (n = 12) and male (n = 2) competitive adolescent athletes (Mage = 15.1 years) who experienced a variety of serious injuries (e.g., ACL rupture, labrum tear) as a result of competing in various sports. Braun and Clark's thematic analysis (2006) was used to develop themes pertaining to the nature, precursors, and implications of injury. Findings highlight a range of specific types of self-presentation concerns (e.g., concerns over "faking" an injury, lacking capability, disappointing others), the impact of the closeness of relationships with significant others, key implications (e.g., future sport apprehensions, negative emotions, motivational enhancements), and coping strategies. Results identify factors for targeted interventions aimed at managing self-presentation concerns among injured adolescents.

Peripheral neuropathy, a common complication of diabetes and kidney disease, impairs gait and often goes undetected in early stages. Current diagnostic methods require specialized equipment, limiting their accessibility in low-resource and home environments.This research aims to develop a contactless, video-based deep learning pipeline for early detection of peripheral neuropathy. The method integrates YOLOv11-based pose estimation and SAM-guided anatomical segmentation to extract lower limb features, followed by gait classification using a pretrained ResNet34 model.The approach was evaluated on 113 sagittal-view walking videos from 57 clinical participants, with strict participant-level separation between training and testing. Our pipeline achieved an accuracy of 80% when using the left ankle keypoint to guide segmentation, outperforming both YOLO-only and SAM-only baselines. The system also localized clinically relevant gait features without requiring wearable sensors.This work demonstrates the feasibility of a low-cost, scalable, and fully contactless screening tool for early peripheral neuropathy detection, with strong potential for deployment in remote or home settings.

Diabetic peripheral neuropathy (DPN) alters foot biomechanics in subtle and progressive ways, often undetected by standard clinical tests in early stages. In this study, we propose a machine learning framework that integrates regional, global, and pixel-level features extracted from normalized plantar pressure recordings to detect DPN in different stages. The relative importance of different regions of the feet (forefoot, midfoot, rearfoot) was emphasized in the classification task, which provides clinically interpretable insights into neuropathic progression. The dataset includes 54 patients divided into four groups: patients with diabetes without PN; with signs of mild PN; with signs of severe PN; and a control group without diabetes. In total, 321 features were extracted: 21 clinically meaningful regional and global features, and the 300 most informative pixel-level features. These were reduced using Principal Component Analysis (PCA) before classifier training. Among all the models tested, the CatBoost achieved the highest accuracy of 92.92%. Notably, the model maintained strong sensitivity across all classes, including the different stages of DPN. Our findings demonstrate that a fusion of pressure-based features, analyzed with machine learning and dimensionality reduction, offers a reliable and interpretable tool for early screening and staging of diabetic neuropathy.

The benefits of physical activity are widely recognized in primary and tertiary breast cancer prevention. Most women do not meet the international physical activity recommendations for breast cancer prevention despite public health policies. The aim of this study is to better understand barriers, facilitators, and preferences for physical activity among adult women in France. A web-based observational study was conducted between February and March 2021 through a Seintinelles French collaborative research platform. Women with and without a history of breast cancer were asked to complete an online questionnaire measuring sociodemographic and health characteristics, physical activity behaviors, physical activity barriers and facilitators, and physical activity preferences. A total of 2,306 women participated in this study, including women without breast cancer (n = 1,245), women with localized breast cancer undergoing treatment (n = 530), or post-treatment (n = 396), and women with metastatic breast cancer (n = 135). The mean age was 48.7years (SD = 13.2) and 63.8% of the population were classified as insufficiently active. Lack of motivation was the most common physical activity barrier in all groups while the main physical activity facilitators were women's desire to improve their abilities and quality of life, to feel better about their bodies and to experience pleasure. Walking remains the preferred physical activity for all women in the study, as they particularly like to be active outdoors, under supervision, on any day of the week, at a moderate intensity, for 30-60min per session. Some differences of physical activity barriers, facilitators and preferences were observed between women who are still undergoing treatment compared to women who have completed the treatment or without breast cancer history. Women with metastatic breast cancer emphasized their need for physical activity counselling. Overall, physically inactive women reported more barriers to exercise (17 out of 22 items), whereas physically active women reported more facilitators (20 out of 22 items). Women across the breast cancer spectrum identified similar and unique determinants and preferences for physical activity. These determinants and preferences may contribute to targeted activity guideline development to promote physical activity for women before, during, and after treatment for breast cancer. Women who had completed treatment for localized breast cancer share both common and specific determinants and preferences forphysical activity compared with women without breast cancer, those undergoing treatment, and those with metastatic disease,highlighting the need for tailored physical activity counselling and programs.