Pre- and post-exercise electrocardiogram pattern modifications in apparently healthy school adolescents in Cameroon
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Jerson Mekoulou Ndongo
, Peguy Brice Assomo Ndemba , Abdou Temfemo , Anasthase Dzudie Tamdja , Martin Hongieh Abanda , Elysée Claude Bika Lele , Ernest Tchoudjin , Wiliam Richard Guessogo , Louis-Georges Gassina and Samuel Honoré Mandengue
Abstract
Background
Physical Education and Sport (PES) is compulsory in Cameroonian education system. Cardiac accidents and sudden cardiac deaths (SCD) have been reported during PES examinations. This study aimed to contribute in the prevention of these cardiac accidents by studying pre- and post-exercise electrocardiogram (ECG) pattern modifications in apparently healthy school adolescents.
Methods
One hundred school adolescents without apparent heart disease [aged 18 ± 2 years; body mass index (BMI): 21.9 ± 2.3] were included. Participants performed two intermittent sprint-endurance tests. The test consisted in walking 2000 m as warm-up, followed by sprint and endurance races. A 12-leads ECG was performed before and in 5 min after the tests. ECG patterns changes were studied with particular attention to abnormalities that could be associated with risk of SCD.
Results
At rest, ECG patterns variants consisted of bradycardia (30%), sinus arrhythmia (9%), posterior hemi post-block (2%), and early repolarization (3%). which disappeared after exercise in all participants. QTc (ms) and heart rate (HR) increased after exercise (p < 0.001); and RR (ms) decreased post-exercise (p < 0.001). Other changes includes the appearance of the T-waves reversed in precordial leads (V2–V4) (p < 0.001), ventricular (6%), atrial and other supraventricular premature beats (2%) in the post-exercise ECG. Left ventricular hypertrophy (2%), right auricular enlargement (2%), short PR (2%) appeared at the end of the tests.
Conclusion
This study suggests that an intermittent exercise can induce cardiac abnormalities able to provoke cardiac accidents and SCD in apparently healthy school adolescents.
Acknowledgments
We thank all the students who participated in this study. We are also grateful to the administrative staff and physical education teachers of government secondary school of Makepe.
References
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Articles in the same Issue
- Editorial
- Clinical diagnostic suspicion: a key component to being a modern Argus in medicine!
- Original Articles
- Ecological perspectives on youth alcohol consumption in the Kuala Lumpur conurbation: a place-based study in Malaysia
- Pubertal assessment: targeted educational intervention for pediatric trainees
- Pediatric providers’ attitudes and practices regarding concussion diagnosis and management
- Pre- and post-exercise electrocardiogram pattern modifications in apparently healthy school adolescents in Cameroon
- Raising awareness on cyber safety: adolescents’ experience of a primary healthcare professional-led, school-based, multi-center intervention
- Comparison of different volumes of high intensity interval training on cardiac autonomic function in sedentary young women
- Rate of teenage pregnancy in Jordan and its impact on maternal and neonatal outcomes
- Metabolic syndrome, leptin-insulin resistance and uric acid: a trinomial foe for Algerian city-dweller adolescents’ health
- Life satisfaction and its relationship with spiritual well-being and religious practice in Iranian adolescent girls
- Subjective social status and its relationship to health and health behavior: comparing two different scales in university students
- Case Report
- Gastric cancer in a teenager: a case report