scholarly journals Age‐related losses in cardiac autonomic activity during a daytime nap

2020 ◽  
Author(s):  
Pin‐Chun Chen ◽  
Negin Sattari ◽  
Lauren N. Whitehurst ◽  
Sara C. Mednick
Keyword(s):  
Autonomic Activity ◽  
Age Related ◽  
Daytime Nap ◽  
Cardiac Autonomic Activity

scholarly journals Age-related losses in cardiac autonomic activity during a daytime nap

2020 ◽  
Author(s):  
Pin-Chun Chen ◽  
Negin Sattari ◽  
Lauren N. Whitehurst ◽  
Sara C. Mednick
Keyword(s):  
Older Adults ◽  
Nrem Sleep ◽  
Parasympathetic Activity ◽  
Total Power ◽  
Autonomic Activity ◽  
Daytime Sleep ◽  
Age Related ◽  
Daytime Nap ◽  
The Impact ◽  
Cardiac Autonomic Activity

AbstractIn healthy, young individuals, a reduction in cardiovascular output and a shift from sympathetic to parasympathetic (vagal) dominance is observed from wake into stages of nocturnal and daytime sleep. This cardiac autonomic profile, measured by heart rate variability (HRV), has been associated with significant benefits for cardiovascular health. Aging is associated with decreased nighttime sleep quality and lower parasympathetic activity during both sleep and resting. However, it is not known whether age-related dampening of HRV extends to daytime sleep, diminishing the cardiovascular benefits of naps in the elderly. Here, we investigated this question by comparing the autonomic activity profile between young and older healthy adults during a daytime nap and a similar period of wakefulness (quiet wake; QW). For each condition, from the electrocardiogram (ECG), we obtained beat-to-beat HRV intervals (RR), root mean square of successive differences between adjacent heart-beat-intervals (RMSSD), high frequency (HF), low frequency (LF) power and total power (TP), HF normalized units (HFnu), and the LF/HF ratio. As previously reported, young subjects showed a parasympathetic dominance during NREM, compared with REM, pre-nap rest, and WASO. On the other hand, older, compared to younger, adults showed significantly lower vagally-mediated HRV (measured by RMSSD, HF, HFnu) during NREM. Interestingly, however, no age-related differences were detected during pre-nap rest or QW. Altogether, our findings suggest a sleep-specific reduction in parasympathetic modulation that is unique to NREM sleep in older adults.Impact StatementSleep is naturally modulated by the autonomic nervous system (ANS), with greater dominance of parasympathetic over sympathetic activity during non-rapid-eye-movement (NREM) sleep. As such, sleep has been termed a “cardiovascular holiday” and has been associated with positive health outcomes. Aging, however, is linked to decreases in cardiac autonomic activity and sympathovagal imbalance. While the impact of aging on ANS activity during nocturnal sleep has received some attention, the cardiac profiles during a daytime nap, to our knowledge, have not yet been studied under the context of aging. Herein, young adults demonstrated increased parasympathetic activity during deep sleep. Older adults, however, showed less parasympathetic modulation during NREM sleep, suggesting loss of the cardiovascular holiday. Importantly, no age-related declines in parasympathetic activity were detected during wake, suggesting a sleep-specific reduction in parasympathetic modulation that is unique to NREM sleep in older adults.

scholarly journals Cardiac autonomic activity during daytime nap in young adults

2017 ◽  
Vol 27 (2) ◽  
pp. 159-164 ◽  
Author(s):  
Nicola Cellini ◽  
Jacopo Torre ◽  
Luciano Stegagno ◽  
Michela Sarlo
Keyword(s):  
Young Adults ◽  
Autonomic Activity ◽  
Daytime Nap ◽  
Cardiac Autonomic Activity

scholarly journals Sleep Indices and Cardiac Autonomic Activity Responses during an International Tournament in a Youth National Soccer Team

2021 ◽  
Vol 18 (4) ◽  
pp. 2076
Author(s):  
Pedro Figueiredo ◽  
Júlio Costa ◽  
Michele Lastella ◽  
João Morais ◽  
João Brito
Keyword(s):  
Heart Rate ◽  
Frequency Domain ◽  
Sleep Duration ◽  
Time Domain ◽  
Soccer Players ◽  
Autonomic Activity ◽  
Male Youth ◽  
Youth Soccer ◽  
Wrist Actigraphy ◽  
Cardiac Autonomic Activity

This study aimed to describe habitual sleep and nocturnal cardiac autonomic activity (CAA), and their relationship with training/match load in male youth soccer players during an international tournament. Eighteen elite male youth soccer players (aged 14.8 ± 0.3 years; mean ± SD) participated in the study. Sleep indices were measured using wrist actigraphy, and heart rate (HR) monitors were used to measure CAA during night-sleep throughout 5 consecutive days. Training and match loads were characterized using the session-rating of perceived exertion (s-RPE). During the five nights 8 to 17 players slept less than <8 h and only one to two players had a sleep efficiency <75%. Players’ sleep duration coefficient of variation (CV) ranged between 4 and 17%. Nocturnal heart rate variability (HRV) indices for the time-domain analyses ranged from 3.8 (95% confidence interval, 3.6; 4.0) to 4.1 ln[ms] (3.9; 4.3) and for the frequency-domain analyses ranged from 5.9 (5.6; 6.5) to 6.6 (6.3; 7.4). Time-domain HRV CV ranged from 3 to 10% and frequency-domain HRV ranged from 2 to 12%. A moderate within-subjects correlation was found between s-RPE and sleep duration [r = −0.41 (−0.62; −0.14); p = 0.003]. The present findings suggest that youth soccer players slept less than the recommended during the international tournament, and sleep duration was negatively associated with training/match load.

Sleep patterns and nocturnal cardiac autonomic activity in female athletes are affected by the timing of exercise and match location

2018 ◽  
Vol 36 (3) ◽  
pp. 360-373 ◽  
Author(s):  
Júlio A. Costa ◽  
João Brito ◽  
Fábio Y. Nakamura ◽  
Pedro Figueiredo ◽  
Eduardo Oliveira ◽  
...  
Keyword(s):  
Female Athletes ◽  
Autonomic Activity ◽  
Sleep Patterns ◽  
Cardiac Autonomic Activity ◽  
Match Location

scholarly journals Cardiac autonomic activity in young adults with short sleep

2011 ◽  
Vol 6 (1) ◽  
pp. 20-23
Author(s):  
Pushpa Krishna ◽  
Vishal V. Navekar ◽  
S. Shwetha
Keyword(s):  
Young Adults ◽  
Autonomic Activity ◽  
Short Sleep ◽  
Cardiac Autonomic Activity
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