Chronic Obstructive Pulmonary Disease (COPD) is a global health concern. Mind–body exercises like Tai Chi and Yoga are suggested as non-pharmacological interventions for COPD management. This meta-analysis evaluates mind–body exercises' impact on lung function and exercise capacity in stable COPD patients, aiming to assess their effectiveness in rehabilitation. A systematic search across various databases identified relevant randomized controlled trials until April 2024. Primary outcomes included lung function tests (FEV1, FVC, FEV1/FVC, FEV1%) and Six-Minute Walk Test (6MWT) results. The Standardized Mean Difference (SMD) measured intervention effects. Fifteen studies with 1047 participants were analyzed. Mind–body exercises significantly improved FEV1 (SMD = 0.87), FEV1/FVC (SMD = 0.19), FEV1% (SMD = 0.43), and 6MWT (SMD = 1.21) compared to standard care. Sensitivity and subgroup analyses confirmed result stability despite some heterogeneity.In conclusion, Mind–body exercises enhance lung function and exercise capacity in stable COPD patients. Integrating them into comprehensive rehabilitation programs is advisable. Further research should explore the specific impacts of different exercise types and intensities.

Plyometrics training is paid great attention by coaches and researchers because of its significant effect on the level of lower limb explosive athletes. Many coaches and reseachers use the biomechanical methods to determine optimal loading height for drop jump. The researchers’ findings in determining optimal loading height were highly biased and were not applied effectively to training practices. This paper reviews the development process of optimal loading height in deep-jump training, combs the relevant concepts and biomechanical mechanisms of optimal loading height in deep-jump training, and looks forward to the future research.

Introduction. This study finds the lower limbs reactive strength index and biomechanical parameters on variable heights. Objective. This research aims to reveal the effects of drop height on lower limbs reactive strength index and biomechanical parameters. Methods. Two AMTI force platforms and Vicon motion capture system were used to collect kinematic and dynamic signals of the lower limbs. Results. The drop height had significant effects on peak vertical ground reaction force and peak vertical ground reaction force in the extension phase, lower limbs support moment, eccentric power of the hip joint, eccentric power of the knee joint, eccentric power of the ankle joint, and concentric power of the hip joint. The drop height had no significant effects on the reactive strength index. Reactive strength index (RSI) had no significant correlations with the personal best of high jumpers. The optimal loading height for the maximum reactive strength index was 0.45m. Conclusion. The optimal loading height for the reactive strength index can be used for explosive power training and lower extremity injury prevention.

The study’s objective is to clarify the influence of drop height on elastic energy’s utilization of the lower extremity, to indicate the correlations between elastic energy’s utilization and personal best, and to determine the optimal loading height for elastic energy’s utilization for male high jumpers. Ten male athletes who belong to high jump events work out the drop jump at different drop heights (0.3 m, 0.45 m, 0.6 m, and 0.75 m). Two AMTI force platforms were used to capture the dynamics data for the lower extremity. Drop height has obvious influence on utilization ratio for elastic energy ( ). The utilization ratio of elastic energy has no note correlation with personal best ( , ). In this study, the optimal loading height for utilization ratio of elastic energy was 0.75 m. The optimal loading height can be determined in terms of the elastic energy utilization ratio for each high jumper to enhance their training effects.

Background: Driven by both the strategy to build a sports powerhouse and the development of digital technology, China's sports broadcasting market has shown rapid growth. However, academic research has yet to systematically explore the underlying psychological mechanisms associated with the transition from “viewing” behavior to “participatory” consumption. Objective: Drawing on a management psychology perspective, this study aims to construct and test a sequential mediation model to examine the associations among Motivation for Watching Sports Events, emotional responses, psychological belonging, and consumption behavior. Methods: A questionnaire survey was conducted among a sample of 563 Chinese viewers with experience watching live sports broadcasting. Established scales were used to measure Motivation for Watching Sports Events, positive emotional responses, psychological belonging, and consumption behavior. Data analysis was performed using SPSS 26.0 (IBM Corp., Armonk, NY, USA) and AMOS 24.0 (IBM Corp., Armonk, NY, USA) software, and sequential mediation effects were examined using PROCESS macro Model 6 and the Bootstrap method. Results: The study found that: (1) motivation for Watching Sports Events was positively associated with consumption behavior (β = 0.575, p < 0.001) and showed indirect associations with consumption behavior through the mediating roles of emotional responses and psychological belonging, with mediation effect sizes of 0.114 and 0.088, respectively; (2) emotional responses and psychological belonging showed a significant sequential mediating effect in the association between viewing motivation and consumption behavior (effect size = 0.032). Specifically, viewing motivation was associated with positive emotional responses, which were further associated with psychological belonging and consumption behavior. Conclusion: This study supported the proposed “cognitive-emotional-identity-behavior” sequential mediation model and examined the psychological mechanisms underlying the association between “viewing” and “consumption.” The findings enrich the theoretical understanding of sports consumption behavior and provide practical insights for stakeholders in the sports industry regarding strategies to enhance viewers' emotional experiences and strengthen community belonging.