Older adults who kept more predictable schedules for waking, meals, social contact, daily activity and bedtime reported lower pain and fewer depressive symptoms in a University of Missouri study examining the relationship between routine, sleep and health.
By yourNEWS Media Newsroom
Keeping everyday activities on a consistent schedule may be associated with lower chronic pain and fewer symptoms of depression among older adults, according to research from the University of Missouri.
The study, published in the Journal of Behavioral Medicine, examined whether the regularity of ordinary daily activities — including waking, social interaction, work or housework, dinner and bedtime — was related to physical pain and emotional well-being.
Researchers found that participants with more consistent routines generally reported less pain and fewer depressive symptoms, even when differences in sleep quality were taken into account.
“Regardless of sleep quality, those who reported having a regular daily routine had lower levels of physical pain and less depression compared to those without a daily routine,” said study author Eunjin Tracy, an assistant professor in the University of Missouri College of Education and Human Development.
The findings could have implications for millions of Americans living with persistent pain. According to the Centers for Disease Control and Prevention, nearly one in four U.S. adults — approximately 60 million people — experiences some form of chronic pain.
Researchers focused specifically on older adults, a population in which pain, insomnia and depression frequently overlap.
The study included 67 participants with an average age of 68. Of those, 37 had insomnia.
Rather than asking participants simply whether they considered themselves creatures of habit, researchers tracked the timing of specific activities for seven consecutive days.
Each participant recorded when he or she got out of bed, had the first social interaction of the day, began work or household tasks, ate dinner and went to bed.
Researchers then compared each activity with that individual’s average timing during the study period.
An activity was counted as regular when it occurred within 45 minutes of the participant’s average time.
Participants received overall routine scores ranging from 0, representing “very irregular routines,” to 7, representing “extremely regular routines.”
They also completed assessments measuring pain intensity and symptoms of depression.
The results showed a measurable relationship between greater schedule consistency and pain.
For every one-point increase in the overall routine-regularity score, participants’ average pain scores improved by 6% over the seven-day study period.
Social consistency also appeared to matter.
Each one-point increase in the regularity of social interactions was associated with a 0.7-point decrease in participants’ depression scores.
Those assessments included symptoms such as low interest, hopelessness, fatigue and difficulty concentrating.
Participants whose days followed a more predictable pattern generally experienced fewer depressive symptoms, Tracy said.
The association is consistent with previous work connecting mood disorders and long-term pain. A 2005 review published in Chiropractic & Osteopathy concluded that “the incidence of depression predicts chronicity in pain syndromes” [2].
Sleep may be an important part of that relationship.
Pain itself can interfere substantially with rest. As Basic Geriatric Nursing states, “Pain, whether it is chronic or acute, interrupts or prevents sleep” [1].
At the same time, poor sleep may make pain more difficult to tolerate.
The University of Missouri researchers noted that insomnia has been associated with greater pain sensitivity and with inflammation that may increase the risk of chronic pain.
That cycle — pain disturbing sleep and poor sleep potentially worsening pain — is one reason the researchers were interested in whether maintaining regular daytime and nighttime schedules might provide another way of supporting the body’s internal rhythms.
One possible explanation involves the circadian system.
The circadian rhythm functions as the body’s internal clock, helping regulate sleep, wakefulness, hormonal activity and numerous other physiological processes across a roughly 24-hour cycle.
The researchers suggested that predictable schedules may help stabilize that system and influence hormones and neurotransmitters including cortisol, melatonin and serotonin.
When circadian timing remains well regulated, bodily systems tend to operate more predictably. Disruption, by contrast, can affect sleep, mood and other aspects of health.
Regular exposure to environmental cues can help reinforce that internal timing.
“Natural sunlight helps set your circadian rhythm and promote regular sleep and wake times,” according to 4 Weeks to Maximum Immunity [3].
Sleep itself performs essential restorative functions.
“Sleep is almost as important as breathing for your health. Sleep restores energy to the body, particularly to the brain and nervous system,” according to 7 Golden Keys to Unlock Lifelong Vitality [4].
Another article addressing medications for sleep disorders similarly noted that sleep is important to overall health and helps the body recover from the stressors experienced during the previous day [5].
The Missouri study does not demonstrate that establishing a regular schedule will directly cure chronic pain or depression.
Researchers emphasized that the investigation was observational and therefore cannot prove that greater routine consistency caused participants’ symptoms to improve.
It is also possible that people experiencing less pain or depression find it easier to maintain regular schedules.
The researchers identified additional limitations.
Only 67 people participated, making the sample relatively small, and the study relied substantially on information participants reported themselves.
Self-reported information can be affected by memory, interpretation and other forms of reporting bias.
The observation period was also brief, lasting seven days.
Additional research will be needed to determine whether consistent routines produce similar associations across larger populations and whether the relationship persists over months or years.
Even with those limitations, the findings contribute to growing interest in non-drug strategies that may complement conventional treatment for chronic pain.
Physical activity is one example.
A large Norwegian study involving more than 11,000 adults found that walking for approximately 100 minutes each day was associated with a significantly lower risk of developing chronic lower back pain, according to a report on the research [6].
Other research has emphasized that strenuous workouts are not always necessary to obtain health benefits.
“Even gentle, low-intensity exercise is good for you,” according to another report [7].
The new University of Missouri findings suggest that timing may deserve consideration alongside activity itself.
Regular wake times, predictable meals, consistent social contact and stable bedtimes are relatively simple behaviors, but collectively they may help reinforce the biological rhythms involved in sleep, mood and pain regulation.
For people with persistent pain, however, the findings should be viewed as an association rather than a replacement for medical evaluation or treatment.
The study does not establish a specific schedule that will work for everyone, nor does it show that routine alone can resolve chronic pain or clinical depression.
Instead, the research suggests that greater regularity in everyday life may be one potentially useful component of a broader approach to physical and emotional health — and one that warrants further study in larger and longer-term trials.
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