By Alan Mozes
THURSDAY, Aug. 15 (HealthDay News) -- If you decide to hit the gym in hopes that a quick dose of exercise will cure your insomnia, a new study suggests that will not be enough.
"Where the idea to explore this came from is that my patients were coming in and saying that they heard that exercise is good for sleep," explained study author Kelly Baron, director of the Behavioral Sleep Medicine Program with the Feinberg School of Medicine at Northwestern University in Chicago. "But people generally want a quick fix. And they weren't seeing improvements right way. So, they were getting discouraged," she said.
"The message here is that exercise is not a quick fix, which I don't really think is discouraging at all," Baron said. "Our previous work found that exercise over a 16-week period is very effective in promoting sleep, on par with any kind of medication. But like with weight loss or any sort of behavioral change, it doesn't happen immediately. You have to measure progress over months, not day-to-day."
Baron and her colleagues published their latest findings online Aug. 15 in the Journal of Clinical Sleep Medicine.
With this latest study, the dashed expectations came after the researchers took a closer look at earlier data on the sleep habits of 11 sedentary middle-aged and elderly women. All had been diagnosed with insomnia before beginning a four-month, monitored regimen of aerobics.
By the end of the four months, the exercise regimen did help boost sleep, mood and vitality among older women with insomnia who had not previously exercised.
All of the women had kept track of their sleeping patterns using sleep logs, both before starting to exercise and four months into their new routine. All were outfitted with wristwatch monitors that kept a record of activity rhythms during sleep.
The result of the new look at the numbers: A single exercise session during the day did not help promote improved sleep that same night.