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European Society of Cardiology

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Elderly mortality reduced with more physical activity

Risk of death for the elderly decreases with greater and more regular exercise, according to a study in a French cohort of more than 1,000 elderly subjects (the PROOF study) presented recently at EuroPRevent 2015.1

Subjects were enrolled in the study at age 65 in 2001 and followed-up for 13 years. During that follow-up their level of physical activity was monitored and categorised according to five levels of MET-h values per week: <1; 1-3.74; 3-75-7.49 (equivalent to brisk walking for up to 150 minutes per week, and the recommended activity level); 7.5-15; and >15 MET-h per week. Mortality and cardiovascular events were recorded over the follow-up period and associated with exercise levels.

Results showed that around 10% of the eligible cohort died during the follow-up period. However, the risk of death was calculated to be 57% lower in those whose activity level was equal to or higher than the recommended 150 minutes per week (7.5-15 MET-h per week). And furthermore, those doing a very low level of physical activity per week (1-3.74 MET-h/week) had 51% lower risk of death than those doing the very minimum (<1 MET-h/week). These differences in risk were statistically significant.

There were other significant findings too – notably that starting or restarting physical activity during retirement reduced the risk of death by two-thirds, but in contrast any reduction, even in low levels of activity, exposed the elderly to a higher risk of death.

The results of the study are presented today at EuroPRevent 2015 by Dr David Hupin from the Department of Clinical and Exercise Physiology at the University Hospital of St-Etienne-Lyon, France.

Commenting on the results, presenter Dr David Hupin (University Hospital of St-Etienne-Lyon, France) said several conclusions might be drawn but notably that the level of physical activity in the elderly was negatively associated with mortality rate in a “dose-dependent” way and that even a low level of exercise below current recommendations had some protective effect.

As a simple rule for the elderly Dr Hupin recommended that at least 15 minutes of physical activity for five days a week would be a suitable first target for the elderly. “This could include brisk walking, cycling, swimming or gymnastics,” he suggested, “all possibly associated with leisure time physical activity or daily life activities.”

Dr Hupin emphasised that the widespread acceptance of this message would encourage more elderly people to include even “low doses” of physical activity in their usual daily activities, without experiencing high levels of fatigue or of pain. “This message should be relayed by general practitioners, who play a key and essential role in promoting exercise behaviour in the elderly,” he said. “Even a little is good, and more may be better.”

References

1. Hupin D, Roche F, Gremeaux V, et al. Relation between physical activity and morbi-mortality of elderly people: the Proof cohort study. Presented at EuroPRevent 2015, Lisbon.

Published on: May 28, 2015

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