Awarding middle life can enhance brain durability in Alzheimer’s

Your stay during your 40s and 50s could help your brain resist Alzheimer’s changes, especially if you follow the recommendations of who, this study finds.

Study: Physical activity changes during medium life connection to brain integrity and amyloid load. Credit Picture: Goodluz / Shutterstock

In a recent article published in the magazine Alzheimer’s and dementiaResearchers investigated how changes in physical activity during middle life may affect brain changes associated with Alzheimer’s (AD) disease in people with a higher risk of developing the disease.

Their findings indicate that physical activity at the levels recommended by the World Health Organization (WHO) was associated with a reduced amyloid load in the brain and the two are done and remain active, even less than recommended levels, linked to more thickness. On the contrary, the living room stay is involved in reduced thickness of the bark in areas vulnerable to AD.

Background

Alzheimer’s (AD) disease begins with a long preclinical phase characterized by early changes in the brain, such as neurodegeneration and amyloid-B (AB) accumulation, which can be detected through biomarkers before the onset of symptoms.

Researchers believe that up to one third of cases are linked to modified lifestyle factors and there is increasing interest in preventing advertising through behavior change, especially physical activity.

Settlement is a well -known risk factor for dementia, while medium life has been shown to reduce the risk of advertising and cognitive decline. This could be done through paths such as improved mental and cardiovascular health.

Middle life is a critical period, because changes in age -related brain and pathological pathologies often begin then, especially in people at genetic or family risk. While previous studies have shown cross-sectional links between physical activity and reduced advertising advertising, few have examined how changes in activity levels-especially compliance with the recommendations of which are-evolving the evolution of advertising changes.

For the study

In this study, the researchers evaluated a critical research gap by investigating whether the increases of physical activity, including adhering to its guidelines which are linked to a lower AB load and a better brain structure in cognitively unknown adults.

Equate data from 337 cognitive non -temporary participants in Catalonia from a larger study on Alzheimer’s preclinical disease (AD). Participants, between the ages of 45 and 65 and mainly with a family history of AD, had physical activity data collected at the start (2013-2014) and follow-up (about 4 years later). Only those with magnetic resonance imaging and/or amyloid-pet data were included during monitoring.

Physical activity was evaluated using a questionnaire that recorded the weekly minutes of moderate or intense activity. The participants were grouped on the basis of compliance with the guidelines for the physical activity of which at both time points: they were retained, maintained non -adhesion, became attached, became unattended and maintained. A continuous measure of change of activity was also calculated.

The amyloid brain load was evaluated through Positron emission tomography (RET) and the thickness of the bark in advertising areas was measured using structural magnetic resonance imaging (MRI). The advertising area was determined using a complex areas of medium -sized lobe vulnerable to early advertisement.

Statistical models examined how the group of physical activity and changes in activity predicted the amyloid load and the thickness of the cortex during monitoring, adapting age, sex, education, apolipoprotein E (APOE) -E4 and time between evaluations.

Sensitivity analyzes are also controlled for cardiovascular and mental health factors such as symptoms of depression and anxiety.

It is worth noting that the effects of brain imaging were measured only during monitoring, so the causality cannot be consistently established. In addition, 99.4% of the participants were Caucasian, which limits the generalization of the results in other populations.

Findings

Participants were categorized into five groups based on keeping the guidelines for its physical activity. Nearly 30% remained a living room, while 15.7% became attached to their treatment. Those who became attached showed the greater increase in fine physical activity. There were no significant group differences in the state of age, education, gender or APOE-E4.

Participants who maintained the sedentary behavior had a significantly lower thickness of the crust in Alzheimer’s (AD) disease who have sensitive brain areas than those who maintained or became attached or even those who were non -pre -seating but not sedentary. In addition, those who became attached had a significantly lower amyloid-B load (AB) than those who became non-adherent, a finding that remained statistically significant even after correction for multiple comparisons. The difference in amyloid load between those who became attached and those who remained sitting were also present, but less powerful.

A dose-response compound was found, with increased physical activity associated with a lower AB load. However, this dose -dependent effect was not observed for the thickness of the bark. These results remained largely resistant after adaptation for cardiovascular risk and mental health ratings, although some cortex -thick correlations were weakened after these adjustments.

Conclusions

The study reveals that increased or prolonged physical activity during middle life is associated with a lower AB load and greater thickness of the cortex in the areas of the AD brain, underlining the possible neuroprotective effects.

Even partial attachment to the activity lines (that is, non -attached but not sedentary) appeared beneficial. A relationship that depends on the dose between increased activity and reduced AB supports this link.

The advantages of this analysis include longitudinal design, biomarker data and adaptation for confusing factors. However, the study is limited by the observative nature of research design, limited ethnic diversity, the use of self -reported physical activity and the inability to exclude the reverse causal relevance due to the effects of the brain only measured during monitoring. Also, potential non -underestimated mediators, such as sleep or neurogenesis, were not evaluated.

Overall, the findings indicate that the adoption of physical activity recommended that during middle life can enhance the resistance to early ad pathology, even in people at risk.