Light, physical activity reduces brain aging
April 19, 2019
Science Daily/Boston University School of Medicine
Incremental physical activity, even at light intensity, is associated with larger brain volume and healthy brain aging.
Considerable evidence suggests that engaging in regular physical activity may prevent cognitive decline and dementia. Active individuals have lower metabolic and vascular risk factors and these risk factors may explain their propensity for healthy brain aging. However, the specific activity levels optimal for dementia prevention have remained unclear.
The new 2018 Physical Activity-Guidelines for Americans suggest that some physical activity is better than none, but achieving greater than 150 minutes of moderate-to-vigorous (MV) physical activity per week is recommended for substantial health benefits.
Using data from the Framingham Heart Study, researchers found that for each additional hour spent in light-intensity physical activity was equivalent to approximately 1.1 years less brain aging.
According to the researchers, these results suggest that the threshold of the favorable association for physical activity with brain aging may be at a lower, more achievable level of intensity or volume.
"Every additional hour of light intensity physical activity was associated with higher brain volumes, even among individuals not meeting current Physical Activity-Guidelines. These data are consistent with the notion that potential benefits of physical activity on brain aging may accrue at a lower, more achievable level of intensity or volume," explained Nicole Spartano, PhD, research assistant professor of medicine at Boston University School of Medicine (BUSM).
"We have really only just begun to uncover the relationship between physical activity and brain health." Spartano emphasizes the need to explore the impact of physical inactivity on brain aging in different race, ethnic, and socio-economic groups. She is leading a team effort to investigate these patterns at multiple sites all over the country. "We couldn't do this research without the commitment of the Framingham Heart Study participants who have given so much to the medical community over the years. Our research also hinges on the multi-disciplinary team of investigators at Boston University and external collaborators." She also acknowledges the importance of funding for research in this area and is grateful for support from the National Institute on Aging, American Heart Association, and Alzheimer's Association.
https://www.sciencedaily.com/releases/2019/04/190419112331.htm
Mental well-being predicts leisure time physical activity in midlife
Different exercise activities are related to the different dimensions of well-being in midlife
May 3, 2019
Science Daily/University of Jyväskylä - Jyväskylän yliopisto
Men and women with high mental well-being at the age of 42 were more physically active at the age of 50 compared to those who got lower scores in mental well-being at age 42. Different exercise activities are related to the different dimensions of well-being in midlife.
Mental well-being was investigated through three dimensions: emotional, psychological and social well-being. Emotional well-being indicates overall satisfaction with life and a tendency to have positive feelings. Psychological well-being refers to experiences of personal growth and the purpose of life. Social well-being tells about relationships with other people and the community.
It was a surprise that leisure time physical activity did not predict later mental well-being or subjective health, but mental well-being predicted physical activity. It seems that mental well-being is an important resource for maintaining a physically active lifestyle in midlife, says Dr. Tiia Kekäläinen from the Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyväskylä, Finland.
Different types of physical activities are good for well-being
Investigation of various leisure time physical activities revealed that different activities are associated with the dimensions of well-being in 50-year-old men and women. Walking was related to emotional well-being, rambling in nature to social well-being and endurance training to subjective health.
"Although exercise did not predict later mental well-being or subjective health in this study, exercise is important for current mental well-being and health," Kekäläinen says.
These associations were found among both men and women, but additionally, rambling in nature was linked to both emotional well-being and subjective health, but only among men.
"It is possible that rambling in nature means different things for men and women. For example, it correlated with the frequency of vigorous exercise only among men," Kekäläinen says.
The data gathered at ages 42 and 50 by questionnaires and interviews for the Jyväskylä Longitudinal Study of Personality and Social Development (JYLS) were used (n = 303). Prof. Lea Pulkkinen started JYLS in 1968 at the Department of Psychology, University of Jyväskylä. Later, JYLS has been moved to the Gerontology Research Center and is led by Research Director Katja Kokko.
https://www.sciencedaily.com/releases/2019/05/190503112740.htm