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Moderate-to-vigorous physical activity at any dose reduces dementia risk

jamda.com

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Re: Moderate-to-vigorous physical activity at any dose reduces dementia risk

#3
>> Each 30 minutes higher MVPA was associated with a 4% reduction in the risk of all-cause dementia

So 4% reduction means... complete chance of dementia? Or it helps 4 in 100 people? How can that be applied? I think that number lacks qualitative information. Conclusions like this are vague. I could see a number like 33% or 50% being more easily applied for expected results. 4% seems within a margin of error.

Re: Moderate-to-vigorous physical activity at any dose reduces dementia risk

#4

>> Each 30 minutes higher MVPA was associated with a 4% reduction in the risk of all-cause dementia So 4% reduction means... complete chance of dementia? Or it helps 4 in 100 people? How can that be applied? I think that number lacks qualitative information. Conclusions like this are vague. I could see a number like 33% or 50% being more easily applied for expected results. 4% seems within a margin of error.

Glance at the study? 90k 63+ yr olds over 4.4 years followed where 700+ developed dementia.

Re: Moderate-to-vigorous physical activity at any dose reduces dementia risk

#5

>> Each 30 minutes higher MVPA was associated with a 4% reduction in the risk of all-cause dementia So 4% reduction means... complete chance of dementia? Or it helps 4 in 100 people? How can that be applied? I think that number lacks qualitative information. Conclusions like this are vague. I could see a number like 33% or 50% being more easily applied for expected results. 4% seems within a margin of error.

I think they're saying each 30 minutes of exercise per week is associated with a 4% reduction of risk. So if you do 3 hours per week it's a 36% reduction (roughly).