Sex Differences in the Incidence of Sudden Cardiac Arrest/Death in Competitive Athletes: A Systematic Review and Meta-analysis.

Background: Although many studies have demonstrated a lower incidence of sudden cardiac arrest or death (SCA/D) in female athletes than in male, there is limited understanding of the specific underlying causes.

Objective: This systematic review aimed to assess the disparities in SCA/D incidence between male and female competitive athletes and explore the associated etiologies.

Methods: A comprehensive search was conducted for retrospective and prospective studies examining SCA/D incidence in male and female athletes.

Corrigendum: Cardiac function and autonomic cardiac function during a multi-stage cycling event: a brief report.

[This corrects the article DOI: 10.3389/fspor.2024.

Cardiac function and autonomic cardiac function during a multi-stage cycling event: a brief report.

Introduction: Prolonged and repeated exercise performed during an ultra-endurance event can induce general and cardiac fatigue known as exercise-induced cardiac fatigue. Our objective was to find a possible correlation between the cardiac function and the autonomic cardiac function.

Methods: During a multistage ultra-endurance event, a female well-trained cyclist underwent daily rest echocardiography and heart rate variability measurements to assess the cardiac function and the cardiac autonomic function.

Impact of long-lasting moderate-intensity stage cycling event on cardiac function in young female athletes: A case study.

Purpose: Effects of intense and/or prolonged exercise have been studied extensively in male athletes. Nevertheless, data are scare on the effect of long duration events on cardiac function in female athletes. Our aim was to investigate the effect of a long-lasting moderate-intensity stage cycling event on cardiac function of young female athletes.

Exercise-Induced Cardiac Fatigue in Soldiers Assessed by Echocardiography.

Echocardiographic signs of exercise-induced cardiac fatigue (EICF) have been described after strenuous endurance exercise. Nevertheless, few data are available on the effects of repeated strenuous exercise, especially when associated with other constraints as sleep deprivation or mental stress which occur during military selection boot camps. Furthermore, we aimed to study the influence of experience and training level on potential EICF signs.

Modeling Stress-Recovery Status Through Heart Rate Changes Along a Cycling Grand Tour.

Background: Heart rate (HR) and HR variability (HRV) indices are established tools to detect abnormal recovery status in athletes. A low HR and vagally mediated HRV index change between supine and standing positions reflected a maladaptive training stress-recovery status.

Objectives: Our study was focused on a female multistage cycling event.

Daily fatigue-recovery balance monitoring with heart rate variability in well-trained female cyclists on the Tour de France circuit.

Objectives: This study aimed to analyze the daily heart rate variability (HRV) in well-trained female cyclists during the 2017 Tour de France circuit and to relate it to the load and perceived exertion response.

Methods: Ten female cyclists volunteered to participate in the study. HRV was recorded with a portable heart rate monitor each morning at rest in supine (7 min.

Physical activity and diabetic cardiomyopathy: myocardial adaptation depending on exercise load.

Diabetes mellitus (DM), an increasing health problem worldwide, is associated with severe cardiovascular complications. To date, the beneficial effects of physical activity in both prevention and treatment of DM and its complications are well established. Nevertheless, it appears that exercise training, depending on the load, exerts differential effects on the myocardium.

Intense exercise training is not effective to restore the endothelial NO-dependent relaxation in STZ-diabetic rat aorta.

Background: The aim of this study was to examine the effects of intense physical training on vascular function in streptozotocin-diabetic rats. We focused on the endothelium-dependent relaxation (EDR) induced by acetylcholine (ACh) and stable ADP adenosine-5'- O - (2-thiodiphosphate) (ADPβS).

Methods: Control or diabetic male Wistar rats (n=44) were randomly assigned to sedentary or trained groups.

Energy system contribution to Olympic distances in flat water kayaking (500 and 1,000 m) in highly trained subjects.

Olympic flat water kayaking races take place over a distance of 500 and 1,000 m. This study was designed to determine the aerobic and anaerobic contributions to 500- and 1,000-m races during flat water paddling in open water, using the accumulated oxygen deficit (AOD) method. Seven internationally ranked athletes, specialized in 500-m races and familiar with 1,000-m races, participated in this study (age: 21.

Combined insulin treatment and intense exercise training improved basal cardiac function and Ca(2+)-cycling proteins expression in type 1 diabetic rats.

This study investigated the effects of 8 weeks of intense exercise training combined with insulin treatment on the Ca(2+)-cycling protein complex expression and their functional consequences on cardiac function in type 1 diabetic rat hearts. Diabetic Wistar rats were randomly assigned into the following groups: received no treatment, insulin-treated diabetic, trained diabetic, and trained insulin-treated diabetic. A control group was also included.

Effects of treadmill exercise and training frequency on anabolic signaling pathways in the skeletal muscle of aged rats.

Physical exercise is the most effective intervention against sarcopenia of aging; however, the cellular and molecular mechanisms mediating training-induced adaptations are not yet completely understood. Furthermore, it is unclear whether exercise training initiated late in life affects myocyte anabolic signaling in a dose-dependent manner. Hence, we sought to investigate the effects of treadmill exercise and training frequency on anabolic pathways, including insulin signaling, in the skeletal muscle of old rats.

Intense exercise training induces adaptation in expression and responsiveness of cardiac β-adrenoceptors in diabetic rats.

Background: Informations about the effects of intense exercise training on diabetes-induced myocardial dysfunctions are lacking. We have examined the effects of intense exercise training on the cardiac function of diabetic rats, especially focusing on the Langendorff β-adrenergic responsiveness and on the β-adrenoceptors protein expression.

Methods: Control or Streptozotocin induced-diabetic male Wistar rats were randomly assigned to sedentary or trained groups.

Effects of exercise training combined with insulin treatment on cardiac NOS1 signaling pathways in type 1 diabetic rats.

This study examined the effects of a dual treatment combining insulin treatment and exercise training on basal cardiac function and signaling pathways involving β3-AR, NOS1, and RyR2 in type 1 diabetic rats. Male Wistar rats were assigned into a diabetic group receiving no treatment (D), an insulin-treated diabetic (Ins), a trained diabetic (TD), and a trained insulin-treated diabetic (TIns) group. Control group (C) was included in order to confirm the deleterious effects of diabetes.