Cardiac Arrhythmias Triggered by Sudden and Dynamic Efforts

Furtado, Emanuel Couto; Araújo, Cláudio Gil Soares de

doi:10.1111/j.1542-474x.2010.00356.x

Cited by 4 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since its inception in the mid-1980s, it has been applied to more than 7,000 subjects from five to 100 years of age, with various clinical conditions and/or experimental settings. [37][38][39][40][41] As might be expected, 4sET results are only partially related to other proposed autonomic criteria of cardiac vagal modulation, such as resting HR and respiratory sinus arrhythmia, 23 HR recovery after a maximal exercise testing 42 and also to vagal activity measured in other body organs. 29 This partial association is likely due to the fact that, different from other autonomic testing protocols or criteria often used for vagal modulation assessment, 4sET results are exclusively explained by CVI, because the HR transient induced by the 4-second of unloaded cycling is fully abolished by atropine and unaffected by propranolol.…”

Section: ■ Discussionmentioning

confidence: 99%

Cardiac vagal index varies according to field position in male elite football players

Araújo¹,

Bottino²,

Pinto³

2018

Medical Express

View full text Add to dashboard Cite

BACKGROUND: Cardiac vagal index (CVI) is supposedly higher in athletes and may differ between sports and/or between field positions. OBJECTIVE: To compare CVI: a) between elite football players vs. non-athletes and b) according to five football positions. METHOD: 242 football players of the first Brazilian/Angolan division were divided in five positions (N): goalkeepers (17), defenders (44), wingers (34), midfielders (87) and forwarders (60) and compared with 303 age-matched healthy non-athletes. CVI was estimated from a 4-second exercise test by quantifying the ratio of two cardiac cycle durations, before and at the end of a fast unloaded cycling exercise. RESULTS: Football players had resting and maximal heart rates of, respectively, 59 and 190 bpm and measured VO 2 max of 62.2 mL/(kg.min). Players and non-athletes showed similar CVI results (median-[P25-P75]) -1.63-[1.46-1.84] vs 1.61-[1.41-1.81] (p = 0.22). Wingers tended to have a higher CVI (1.84-[1.60-1.99]), especially when compared to defenders (1.53-[1.41-1.72] (p = 0.01). There was a modest non-physiologically relevant association between VO 2 max and CVI (r = 0.15). CONCLUSIONS: Football players did not differ from non-athletes in CVI; however, among players, wingers were more often vagotonic, which may represent a hemodynamic advantage for match situations, where rapid heart rate transitions and faster oxygen delivery to muscles are required.

show abstract

Section: ■ Discussionmentioning

confidence: 99%

Cardiac vagal index varies according to field position in male elite football players

Araújo¹,

Bottino²,

Pinto³

2018

Medical Express

View full text Add to dashboard Cite

show abstract

Exercise Testing for Risk Stratification of Ventricular Arrhythmias in the Athlete

Schmied

Brunckhorst

Duru

et al. 2013

Cardiac Electrophysiology Clinics

View full text Add to dashboard Cite

Electrocardiograms from different types of exercise in Eventing horses with and without cardiac signs

Navas de Solis,

Solomon,

Durando

et al. 2024

Equine Veterinary Journal

View full text Add to dashboard Cite

BackgroundExercising arrhythmias can be clinically irrelevant or associated with poor performance, collapse and sudden cardiac death.ObjectivesTo test if readable exercising ECGs can be recorded by grooms or riders and to describe arrhythmias in ECGs from different types of exercise in Eventing horses and investigate associations with type of workout, the presence of previous cardiac signs and intensity of exercise.Study designCohort study.MethodsSingle lead exercising ECGs were obtained by riders or grooms during training and competition from a convenience sample of horses in training for Eventing competitions. Arrhythmias were described, and associations between different arrhythmia categories and variables that described the horse and the workouts were sought.ResultsThere were 1002 ECGs from 62 horses (median [range] 7 [2–97] ECGs/horse) evaluated and 737 workouts (73.6%) were >95% readable and included in the analysis. There were arrhythmias in 250 (33.9%) of the workouts, complex arrhythmias in 13 (1.8%) and the number of premature complexes was median (range) 0 (0–118). Peak heart rate and duration of exercise were associated with the number of premature complexes, the presence of arrhythmias and complex arrhythmias and were colinear with the type of exercise. Having previous signs of cardiac disease and the type of workout were associated with higher odds of having arrhythmias.ConclusionsMonitoring the rhythm of equine athletes with ECGs obtained by riders and transmitted to an online cloud was feasible. Arrhythmias were frequent, and complex arrhythmias were rare. The presence of cardiac signs, type of exercise and peak heart rate were associated with the presence of arrhythmias. None of the horses developed poor performance or collapse attributed to cardiac disease. The arrhythmias that should be concerning for equine veterinarians need further definition.

show abstract

Cardiac Arrhythmias Triggered by Sudden and Dynamic Efforts

Cited by 4 publications

References 21 publications

Cardiac vagal index varies according to field position in male elite football players

Cardiac vagal index varies according to field position in male elite football players

Exercise Testing for Risk Stratification of Ventricular Arrhythmias in the Athlete

Electrocardiograms from different types of exercise in Eventing horses with and without cardiac signs

Contact Info

Product

Resources

About