درخت حوزه‌های تخصصی

Purpose: This study aimed to investigate the relationship between gut microbiome composition, athletic performance, and post-exercise recovery in endurance athletes following probiotic supplementation.  Method: In this randomized, double-blind, placebo-controlled study, 40 male endurance runners (age: 28.3 ± 5.2 years) were randomly assigned to either a probiotic (n=20) or placebo (n=20) group for 8 weeks. The probiotic group received a daily supplement containing a blend of Lactobacillus acidophilus, Bifidobacterium lactis, and Lactobacillus plantarum (20 billion CFU total). Fecal samples were collected before and after the intervention and analyzed using 16S rRNA gene sequencing. Athletic performance was assessed through VO2max testing and time to exhaustion. Recovery was evaluated by measuring delayed onset muscle soreness (DOMS) and creatine kinase (CK) levels. Results: The probiotic group showed a significant increase in gut microbial diversity (Shannon index: p<0.01) and relative abundance of beneficial bacteria such as Bifidobacterium and Lactobacillus (p<0.001). Significant improvements were observed in VO2max (4.7%, p<0.05) and time to exhaustion (7.2%, p<0.01) in the probiotic group compared to placebo. The probiotic group also demonstrated reduced DOMS (23%, p<0.05) and lower peak CK levels (18%, p<0.01) relative to the placebo group. Multiple regression analysis revealed that changes in Akkermansia muciniphila and Bifidobacterium abundances were significant predictors of performance improvement (R² = 0.68, p<0.001). Conclusion: This study provides evidence that gut microbiome modulation through probiotic supplementation can enhance athletic performance and accelerate post-exercise recovery in endurance runners. These findings suggest that targeted manipulation of the gut microbiome may be a novel strategy for improving sports performance and recovery.

Background: Instrument Assisted Soft Tissue Mobilization (IASTM) and electrotherapy have shown to help alleviating post-operation complications and affect gait kinematics and muscle strength.Aim: This case study aimed to manage the post-operative complications in a patient with investigate excessive ankle stiffness with kinetics, kinematics and Electromyography (EMG) approach.Materials and Methods: A 41-year-old female with post-operation complications including decreased right ankle range of motion (ROM) and strength underwent a 12-week of IASTM and Electrotherapy. Gait analysis was performed before and after the intervention.Results: The results showed notable improvements in ankle 3-dimensional (3D) ROM, power, moment, velocity, cadence, step length, ground reaction force (GRF) and decreased stiffness, muscles activity, single and double support time. Ankle dorsiflexion ROM was not notably increased during gait.Conclusion: Findings suggest that a 12-week intervention of IASTM and electrotherapy can improve gait mechanics and reduce muscle activity in a patient with excessive ankle stiffness.

Sports facility management is debatable from several angles, such as design principles, safety, and health principles, sizes and standards, and supervision, among which optimal location and determining the appropriate location to build sports facilities is one of the most crucial and specialized categories. The purpose of this research is a review study of sports places site selection with geographic information system. To achieve the research goal, a review study was conducted on the issue of locating sports venues with GIS. Google Scholar, SJR, and SID databases were reviewed to extract English and non-English language articles on locating sports venues with GIS. The researches conducted from 2007 to 2023 were reviewed in this study. The search was conducted in December 2022 and led to the identification of 565 records. After two steps of ‘screening’ and ‘eligibility’, 17 researches have met the criteria and were included for data analysis. Findings demonstrated that GIS has become very prosperous in the world, huge sums of money are spent to prepare these systems, and it is predicted that billions of dollars will be spent in this field in the future.