Even light physical activity can make big impact

Even light physical activity can make big impact
Initiating subtle changes in your lifestyle, like substituting prolonged sedentary time with sleep or light physical activities, is associated with lower stress, better mood, and lower body mass index (BMI), according to a recent study.
The new research was published in the American Journal of Preventive Medicine?. Jacob Meyer, lead author and assistant professor of kinesiology at Iowa State University, said light activity can include walking around your home office while talking on the phone or standing while preparing dinner. "People may not even think about some of these activities as physical activity. Light activity is much lower intensity than going to the gym or walking to work, but taking these steps to break up long periods of sitting may have an impact," Meyer said.
Meyer and colleagues used data collected as part of the Energy Balance Study? at the University of South Carolina.

Measuring activity

For 10 days, study participants, ranging in age from 21 to 35, wore an armband that tracked their energy expenditure. Meyer, Director of the Wellbeing and Exercise Lab at Iowa State, said the data allowed researchers to objectively measure sleep, physical activity and sedentary time, rather than relying on self-reports.
In addition to the benefits of sleep and light physical activity, the researchers found moderate to vigorous activity was associated with lower body fat and BMI. Given the negative health effects of prolonged sedentary time, Meyer says the findings may encourage people to make small changes that are sustainable.
"It may be easier for people to change their behaviour if they feel it's doable and doesn't require a major change. Replacing sedentary time with housework or other light activities is something they may be able to do more consistently than going for an hour-long run." Meyer said.

Sleep factor

Getting more sleep is another relatively simple change to make. Instead of staying up late watching TV, going to bed earlier and getting up at a consistent time provides multiple benefits and allows your body to recover, Meyer said. Sleeping is also unique in that it is time you're not engaging in other potentially problematic behaviours, such as eating junk food while sitting in front of a screen.
Making these subtle changes was associated with a better current mood, but light physical activity also provided benefits for up to a year, the study found. While the research was conducted prior to the Covid-19 pandemic, Meyer said the results are timely given the growing mental health concerns during this time of physical distancing.
"With everything happening right now, this is one thing we can control or manage and it has the potential to help our mental health," Meyer said. (ANI)

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