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By: Susan C. Olmstead
Even if you’re middle-aged and sedentary, it’s not too late to improve your health and safeguard your old age through exercise.
In fact, “It may be possible to ‘turn back the clock’ in mid-life through lifestyle changes such as physical activity,” Binh Nguyen, a member of the faculty of Medicine and Health at the University of Sydney, Australia, told The Epoch Times.
Ms. Nguyen led a study of more than 11,000 women over 15 years that showed middle age is not too late to initiate changes that will carry quality-of-life benefits into old age. The study was performed in Australia and published May 2 in the open-access journal PLOS Medicine.
The investigators began with the premise that while we all know it’s important to stay (or get) in shape, staying active through the years can be a challenge.
They note that staying active may be especially tough for women as they get older, simply because life changes get in the way. “For women, major transitions in life, such as marriage, childbirth, children leaving home, retirement, and bereavement, can be associated with changes in physical activity,” they wrote.
“To date, most studies on physical activity and health have relied on physical activity measured at one point in time, not accounting for changes in activity patterns over time.”
Study Methods and Findings
To perform their investigation, the researchers evaluated data collected at three-year intervals between 1998 and 2019 from 11,336 participants in the Australian Longitudinal Study on Women’s Health.
They looked at two groups:
Those who met the World Health Organization physical activity guidelines consistently throughout the 15-year “exposure period.”
Those who did not meet the guidelines at the beginning of the exposure period but starting to first meet the guidelines at age 55, 60, or 65.
They then measured these groups’ outcomes against a control group that did not meet the guidelines throughout the exposure period.
“Physical activity was based on reported weekly minutes of activity (walking, moderate leisure activity, and vigorous leisure activity),” Ms. Nguyen told The Epoch Times.
Both those subjects who consistently adhered to the physical guidelines and those who first started to meet the guidelines at age 55 had higher scores on a “physical quality of life” scale at around age 70 than those who never met the guidelines, the investigators found.
Put simply, “a significant link [was found] between regular exercise during middle age and physical health in later life, even when the exercise routine was not started until [the] mid-50s,” a PLOS press release reported.
“Even partial adherence to guidelines during the 15 years, namely starting to meet the guidelines on reaching age 55 and maintaining meeting the guidelines from the start of the exposure period until reaching 65, was associated with better physical health-related quality of life at around age 70.”
Weaker Effects on Mental Health
Ms. Nguyen noted that while she and her colleagues expected that consistent physical activity during middle age would be associated with better physical and mental health-related quality of life, “we were surprised that mental health was just not improved as much.”
She told The Epoch Times, “There could be several reasons why we observed weaker effects on the mental health components of quality of life. Perhaps the study period was not long enough to see the full effects, or perhaps physical activity affects the physical and mental health components of quality of life differently.”
