Night-time cardiac autonomic modulation as a function of sleep–wake stages is modified in otherwise healthy overweight adolescents

Chamorro, Rodrigo; Algarı́n, Cecilia; Rojas, Óscar Arias; Garrido, Marcelo; Durán-Agüero, Samuel; Causa, Leonardo; Held, C.M.; Lozoff, Betsy; Ferri, Raffaele; Peirano, Patricio

doi:10.1016/j.sleep.2019.06.008

Cited by 5 publications

(4 citation statements)

References 49 publications

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“…Chamorro et al suggested that WASO, REM sleep, and NREM sleep lead to autonomic nervous system dysfunction, which may be related to the occurrence of adolescent obesity (29). Similarly, Bhatia et al indicated that ArI‐total was associated with total fat mass and trunk fat mass, and Koolhaas et al showed that the higher SE monitored by the wrist‐worn activity recorder was related to lower BMI (4).…”

Section: Discussionmentioning

confidence: 99%

Sleep fragmentation and the risk of obesity: The Sleep Heart Health Study

Zhao

Sun

et al. 2021

Obesity

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Objective: Sleep disturbances have been recognized as a risk factor for obesity. This study used polysomnography records to investigate associations between sleep fragmentation and obesity. Methods: Objectively measured sleep fragmentation data recorded by in-home polysomnography, including total arousal index (ArI-total), ArI in rapid eye movement (REM) sleep (ArI-REM), ArI in non-REM sleep (ArI-NREM), sleep fragmentation index, sleep efficiency (SE), and wake after sleep onset (WASO), were based on the Sleep Heart Health Study (2,835 men and 2,888 women with a mean [SD] age of 63.2 [11.2] years). Multivariable regression analyses were used to examine the relationship between sleep fragmentation and obesity.Results: Multinomial logistic regression showed that participants with obesity have a significantly higher ArI-total (odds ratio [OR] 1.018; 95%

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Section: Discussionmentioning

confidence: 99%

Sleep fragmentation and the risk of obesity: The Sleep Heart Health Study

Zhao

Sun

et al. 2021

Obesity

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“…Night-time HRV is associated with sleep quality because sleep in healthy individuals is characterized by attenuated sympathetic and increased parasympathetic nervous activity [ 14 , 15 ]. As such, sleep problems are linked with autonomic imbalance [ 15 , 16 ]. This ability of HRV to assess sleep quality can be of value for climbers since the ascent to high altitudes leads to reduced sleep time and subjective sleep quality, as well as increased night-time awakenings [ 8 , 9 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Night-Time Heart Rate Variability during an Expedition to Mt Everest: A Case Report

Mantzios

Pappas

Tsianos

et al. 2023

Sports

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Mt Everest has been gaining popularity from casual hiking athletes, climbers, and ultra-endurance marathon runners. However, living and sleeping at altitude increases the risk of injury and illness. This is because travel to high altitudes adversely affects human physiology and performance, with unfavourable changes in body composition, exercise capacity, and mental function. This is a case report of a climber who reached the summit of Mt Everest from the north side. During his 40-day expedition, we collected sleep quality data and night-time heart rate variability. During the night inside the tent, the air temperature ranged from −12.9 to 1.8 °C (−5.8 ± 4.9 °C) and the relative humidity ranged from 26.1 to 78.9% (50.7 ± 16.9%). Awake time was 17.1 ± 6.0% of every sleep-time hour and increased with altitude (r = 0.42). Sleep time (r = −0.51) and subjective quality (r = 0.89) deteriorated with altitude. Resting heart rate increased (r = 0.70) and oxygen saturation decreased (r = −0.94) with altitude. The mean NN, RMSSD, total power, LF/HF, and SD1 and SD2 were computed using the NN time series. Altitude reduced the mean ΝΝ (r = −0.73), RMSSD (r = −0.31), total power (r = −0.60), LF/HF ratio (r = −0.40), SD1 (r = −0.31), and SD2 (r = −0.70). In conclusion, this case report shows that sleeping at high altitudes above 5500 m results in progressively reduced HRV, increased awakenings, as well as deteriorated sleep duration and subjective sleep quality. These findings provide further insight into the effects of high altitude on cardiac autonomic function and sleep quality and may have implications for individuals who frequently spend time at high altitudes, such as climbers.

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“… 15 16 For example, a recent study observed a disrupted balance in autonomic nervous system regulation during all sleep stages only in obese adolescents. 17 Another study recognized that physical activity, not the sleep pattern, relates to sympathetic and parasympathetic autonomic modulation in adolescents. 16 However, as previous studies have analyzed the relationship between cardiac autonomic modulation and sleep stages, whether the overall sleep quality and sleep duration relate to cardiac autonomic modulation in obese adolescents remains unclear.…”

Section: Introductionmentioning

confidence: 99%

Association between Sleep Quality and Cardiac Autonomic Modulation in Adolescents: A Cross Sectional Study

Lins-Filho,

Andrade-Lima,

Torres

et al. 2023

Sleep Sci

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Objective To analyze the impact of sleep quality/duration on cardiac autonomic modulation on physically active adolescents with obesity. Materials and Methods The present cross-sectional study included 1,150 boys with a mean age of 16.6 ± 1.2 years. The assessment of cardiac functions included the frequency domain of heart rate variability (HRV; low frequency – LF; high frequency – HF; and the ratio between these bands –LF/HF –, defined as the sympathovagal balance), and each parameter was categorized as low/high. Physical activity levels and sleep quality/duration were obtained by questionnaires. Abdominal obesity was assessed and defined as waist circumference > 80th percentile. Results Poor sleep quality resulted in lower HF (odds ratio [OR]: 1.8; 95% confidence interval [95%CI]: 1.01–3.21]) regardless of physical activity and abdominal obesity. Moreover, the study found no association between sleep duration and HRV parameters in adolescents. Conclusion Sleep quality, not sleep duration, reduces parasympathetic cardiac modulation apart from other factors such as physical activity and abdominal obesity in adolescents.

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Night-time cardiac autonomic modulation as a function of sleep–wake stages is modified in otherwise healthy overweight adolescents

Cited by 5 publications

References 49 publications

Sleep fragmentation and the risk of obesity: The Sleep Heart Health Study

Sleep fragmentation and the risk of obesity: The Sleep Heart Health Study

Night-Time Heart Rate Variability during an Expedition to Mt Everest: A Case Report

Association between Sleep Quality and Cardiac Autonomic Modulation in Adolescents: A Cross Sectional Study

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