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Abstract Sprint interval training (SIT) is a potent exercise strategy to enhance athletes’ anaerobic capacity in a time-efficient manner. This study aimed to investigate the impact of low-volume, court-based SIT on the anaerobic capacity and sport-specific performance in competitive tennis players. Twenty-four competitive collegiate tennis players were randomly assigned to either the SIT group (n = 12; three sessions per week of court-based repeated-sprint training) or the traditional endurance training (ET) group (n = 12; three sessions per week of 45-min continuous treadmill running, n = 12) for a 6-weeks intervention. Baseline and post-intervention assessments included the Wingate Anaerobic Test, elimination rate of blood lactate (BLAer), tennis-specific repeated sprint ability (RSA), and the Yo-Yo Intermittent Recovery Test Level 2 (YoYo-IR2). The results showed that SIT group demonstrated significant improvements in peak and average power during the Wingate test (p = 0.07; p

Introduction: Blood lactate levels in neonates with hypoxic-ischemic encephalopathy (HIE) vary, and their impact on neurodevelopmental outcome is unclear. We assessed blood lactate course over time in neonates with HIE during therapeutic hypothermia (TH) and investigated if blood lactate values were associated with neurodevelopmental outcome at 2 years of age. Methods: This is a retrospective cohort study of neonates with HIE born between 2013 and 2019, treated at the University Children’s Hospital Zurich. We recorded blood lactate values over time and calculated time until lactate was ≤2 mmol/L. Neurodevelopmental outcome was assessed at 18–24 months of age using the Bayley Scales of Infant and Toddler Development, Third Edition (BSID-III), and categorized as favorable or unfavorable. We investigated associations between blood lactate values and outcome using logistic regression and adjusted for Sarnat stage. Results: 33/45 neonates (69%) had a favorable and 14 (31%) an unfavorable neurodevelopmental outcome. Mean initial lactate values were lower in the favorable (13.9 mmol/L, standard deviation [SD]: 2.9) versus unfavorable group (17.1 mmol/L, SD 3.2; p = 0.002). Higher initial and maximal blood lactate levels were associated with unfavorable outcome, also when adjusted for Sarnat stage (adjusted odds ratio [aOR]: 1.37, 95% CI: 1.01–1.88, p = 0.046, and aOR: 1.35, 95% CI: 1.01–1.81, p = 0.041, respectively). Conclusion: In neonates with HIE receiving TH, initial and maximal blood lactate levels were associated with neurodevelopmental outcome at 18–24 months of age, also when adjusted for Sarnat stage. Further investigations to analyze blood lactate as a biomarker for prognostic value are needed. [ABSTRACT FROM AUTHOR]

This study examines the effects of Self-Myofascial Release (SMR) techniques on post-exercise recovery in elite volleyball athletes. Through a controlled investigation involving eighteen Chinese Men's National Volleyball Team athletes, the research assessed the impact of foam rolling (FR) versus passive recovery (PAS) on blood lactate clearance and Delayed Onset Muscle Soreness (DOMS), as measured by Visual Analogue Scale (VAS) scores. Findings indicated that FR significantly reduces VAS scores and facilitates lactate clearance when compared to PAS, suggesting foam rolling may enhance post-exercise recovery. While confirming foam rolling's benefits, this research calls for further exploration into recovery mechanisms, emphasizing a cautious interpretation of foam rolling as part of a comprehensive recovery strategy.

This study examines the effects of Self-Myofascial Release (SMR) techniques on post-exercise recovery in elite volleyball athletes. Through a controlled investigation involving eighteen Chinese Men's National Volleyball Team athletes, the research assessed the impact of foam rolling (FR) versus passive recovery (PAS) on blood lactate clearance and Delayed Onset Muscle Soreness (DOMS), as measured by Visual Analogue Scale (VAS) scores. Findings indicated that FR significantly reduces VAS scores and facilitates lactate clearance when compared to PAS, suggesting foam rolling may enhance post-exercise recovery. While confirming foam rolling's benefits, this research calls for further exploration into recovery mechanisms, emphasizing a cautious interpretation of foam rolling as part of a comprehensive recovery strategy., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors.)