Studying cardiac effects of extreme exercise could yield clues to atrial fibrillation.
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Effects of blood flow restriction on internal and external training load metrics during acute and chronic short-term repeated-sprint training in team-sport athletes.
J Sports Sci
January 2025
Physical Activity, Sport and Exercise (PHASE) Research Group, School of Allied Health (Exercise Science), Murdoch University, Perth, Australia.
This study examined internal, external training loads, internal:external ratios, and aerobic adaptations for acute and short-term chronic repeated-sprint training (RST) with blood flow restriction (BFR). Using randomised crossover (Experiment A) and between-subject (Experiment B) designs, 15 and 24 semi-professional Australian footballers completed two and nine RST sessions, respectively. Sessions comprised three sets of 5-7 × 5-second sprints and 25 seconds recovery, with continuous BFR (45% arterial occlusion pressure) or without (Non-BFR).
View Article and Find Full Text PDFA new HCM heart sound classification method based on weighted bispectrum features.
Phys Eng Sci Med
January 2025
School of Electrical Engineering and Electronic Information, Xihua University, Chengdu, China.
Hypertrophic cardiomyopathy (HCM), including obstructive HCM and non-obstructive HCM, can lead to sudden cardiac arrest in adolescents and athletes. Early diagnosis and treatment through auscultation of different types of HCM can prevent the occurrence of malignant events. However, it is challenging to distinguish the pathological information of HCM related to differential left ventricular outflow tract pressure gradients.
View Article and Find Full Text PDFDiagnostic ultrasonography of upper extremity dynamic compressive neuropathies in athletes: A narrative review.
Int Orthop
January 2025
Physical Medicine and Rehabilitation Division, Department of Orthopaedic Surgery, Stanford University, Redwood City, CA, USA.
Purpose: This narrative review identifies and summarizes current evidence for diagnostic ultrasonographic evaluation of upper extremity dynamic compressive neuropathies affecting athletes.
Methods: Relevant literature was identified using the PubMed database and then summarized.
Results: The compressive neuropathies affecting athletes we identified included: neurogenic thoracic outlet syndrome, pectoralis minor syndrome, quadrilateral space syndrome, suprascapular nerve entrapment, proximal median nerve entrapment or bicipital aponeurosis/lacertus fibrosus (lacertus syndrome), radial tunnel syndrome, and cubital tunnel syndrome.
Sickle Cell Trait Does Not Cause "Sickle Cell Crisis" Leading to Exertion-Related Death: A Systematic Review.
Blood
January 2025
Howard University College of Medicine, Washington, District of Columbia, United States.
Globally, an estimated 300 million individuals have sickle cell trait (SCT), the carrier state for sickle cell disease. While sickle cell disease (SCD) is associated with increased morbidity and shortened lifespan, SCT has a lifespan comparable to that of the general population. However, "sickle cell crisis" has been used as a cause of death for decedents with SCT in reports of exertion-related death in athletes, military personnel, and individuals in police custody.
View Article and Find Full Text PDFRelationships between knee and ankle strength and horizontal deceleration performance at different sprint distances in multi-directional sports athletes.
Sports Biomech
January 2025
School of Athletic Performance, Shanghai University of Sport, Shanghai, China.
The aim of this study was to investigate the relationships between knee and ankle strength and horizontal deceleration performance following different sprint distances. Fifty-seven ( = 41male, = 16 female) youth team-sports athletes completed: a) 5-m and 10-m horizontal deceleration ability (HDA) tests; b) concentric (60°/s, 180°/s) and eccentric (30°/s) relative peak torque (PT) measurements of the knee extensor (KE) and flexor (KF) muscles and the ankle plantarflexion (APF) and dorsiflexion (ADF) muscles in an isokinetic dynamometer. Pearson's correlation coefficients revealed that concentric at 60°/s and eccentric at 30°/s KE were mostly related to deceleration performance both in HDA ( = -0.
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