It’s a mistake to think that if you don’t get enough sleep during the week due to work or leisure, sleeping on the weekend will make up for it. A recent study from Pennsylvania State University found that when sleep was restricted to five hours each night, cardiovascular health indicators such as heart rate and blood pressure worsened throughout the week, just trying to make up for lost sleep over the weekend. is not enough to improve these conditions. The indicator has returned to normal.
“Only 65% of adults in the United States regularly get the recommended seven hours of sleep each night, and there are many studies suggesting that this lack of sleep is linked to cardiovascular disease in the long term. There is evidence,” Associate Professor Annmarie Chan said. He is a biobehavioral health researcher and co-author of a paper published in the journal Psychosomatic Medicine. “Our study uncovers a potential mechanism for this long-term relationship. If sufficient serial damage is done to cardiovascular health at a young age, the heart will become susceptible to cardiovascular disease in the future.” It could get easier.”
The researchers enlisted 15 healthy men between the ages of 20 and 35 to participate in an 11-day inpatient sleep study. The participant was allowed to sleep up to 10 hours each night for his first three nights to establish a baseline sleep level. For the next five days, participants’ sleep was restricted to 5 hours each night, followed by two recovery nights and allowed up to 10 hours of sleep each night. The researchers assessed the individuals’ resting heart rate and blood pressure every two hours during the day to assess the effects of this sleep plan on cardiovascular health.
Chang said the team’s study was unique because they measured heart rate and blood pressure multiple times throughout the day, allowing them to explain the possible effects of time of day on heart rate and blood pressure. I explained. For example, heart rate is naturally lower when you wake up than later in the day, so multiple heart rate measurements throughout the day can explain this difference.
The research team, including lead author and biobehavioral health graduate student David Reichenberger of Pennsylvania State University, found that heart rate increased by nearly one beat per minute (BPM) as the study continued. discovered. Specifically, the average baseline heart rate was 69 BPM, while the average heart rate at the end of the study on recovery day 2 was almost 78 BPM. His systolic blood pressure also increased by about 0.5 millimeters of mercury (mmHg) per day. Mean baseline systolic blood pressure was 116 mmHg and was approximately 119.5 mmHg at the end of the recovery period.
“Heart rate and systolic blood pressure increased day by day and did not return to baseline levels by the end of the recovery period,” Reichenberger said. “That is, by the end of the study weekend, their cardiovascular systems had not yet recovered, even though there was an opportunity for additional rest.”
Longer periods of sleep recovery may be required to recover from multiple consecutive sleep deprivations, Chang noted.
“Sleep is a biological process, but it’s also a behavioral process that we can often control,” Chan says. “Sleep not only impacts cardiovascular health, but it impacts many things, including weight, mental health, ability to focus and ability to maintain healthy relationships with others. And as we learn more and more about how sleep impacts everything in our lives, my hope is that sleep will get more attention in improving health.”
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