Related Experiment Video
Updated: Jan 31, 2026
Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
The Hidden Toll of On-Call Shifts: Reduced Heart Rate Variability and Increased Physiological Stress in Residents
Şahhan Kılıç1, Süha Asal1, Ayça Yılmaz Atinkaya2
1Department of Cardiology, Ministry of Health Çorlu State Hospital, Tekirdağ, Türkiye.
Objective:
The aim of this study was to assess autonomic dysfunction via heart rate variability (HRV) in residents with on-call shifts.
Method:
A cross-sectional study of 140 residents (104 on-call, 36 non-on-call) was conducted. HRV parameters, stress indices, and physical activity (International Physical Activity Questionnaire, IPAQ) were compared using parametric and non-parametric tests.
Results:
On-call residents showed elevated heart rates (84 vs. 79 bpm, P = 0.006), higher stress indices (12.1 vs. 9.96, P = 0.003), and reduced parasympathetic markers (root mean square of successive differences [RMSSD], standard deviation of normal-to-normal intervals [SDNN], parasympathetic nervous system index [PNS index]; all P ≤ 0.006). Physical activity did not differ between groups.
Conclusion:
An association between on-call shifts and altered autonomic balance was observed, suggesting a potential increase in cardiovascular risk independent of lifestyle factors. These findings may be considered by policymakers when planning resident physician workloads.
More Related Videos
05:48Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology
Published on: September 21, 2018
09:12The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
Published on: July 4, 2013
Related Concept Videos
01:17Increased pulse rate
Many factors can elevate the risk of developing tachycardia. These include advanced age, a family history of arrhythmias, and an...
01:24Physiological Foundation of Stress
Role of the Sympathetic Nervous System
Adrenaline triggers the...
01:31Regulation of Heart Rates
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
01:18Physiology of the Heart: The Cardiac Cycle
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
01:30Factors Influencing Heart Rate
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
01:19Cardiac Output I:Effect of Heart Rate on Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...