2012-09-23

weightlifting away alzheimers

7.18: news.health/alz/weightlifting away alzheimers:
summary:
. comparing weightlifting to aerobics
for reductions in cognitive decline;
weightlifting was much better for women
at least if they started doing it
before the cognitive decline advanced much .
. the comparison used only women because,
an aerobic study of men found that
among the elderly, only the women
responded cognitively to aerobics .
. while weightlifting was better than aerobics
aerobics can do some good for women,
but only at near-daily application of
an earnest 80% target heart rate;
ie, 4 days per week was interesting,
while 2 days of less intensity was not .
. if she had only 2 days to work,
resistance training is what helped .

. he is welcome to do aerobics
but needs to also do weightlifting,
or needs to complement aerobics with
a diet that optimizes these parameters:
Fasting insulin, cortisol, and IGF-I .
. other tests that male aerobics didn't help
were brain-derived neurotrophic factor,
and β-amyloids 40 and 42 .

. light aerobics in women
did improve one memory test:
the Rey Auditory Visual Learning Test.
( given a list of 15 unrelated words
repeated over five different trials
and are asked to repeat.
Another list of 15 unrelated words are given
and the client must again repeat
the original list of 15 words
and then again after 30 minutes.
Approximately 10 to 15 minutes
is required for the procedure
(not including 30 min. interval)).

another win for heavier aerobics
(walking 45 minutes 3 days per week)
was that at an age where the hippocampus
was normally declining 1.5%,
that level of aerobics was increasing it by 2% !
. it also increased BDNF
(brain-derived neurotrophic factor).

"By midcentury, care for people with Alzheimer's
will cost the U.S. over $1 trillion.

Four Clinical Trials Further Clarify The Role Of
Physical Activity In Cognitive Function And Dementia.

Moderate walking may grow brain region related to memory;
increase nerve growth factor.

Resistance Training Promotes Cognitive and
Functional Brain Plasticity in Seniors With
Probable Mild Cognitive Impairment.

Resistance training and executive functions:
a 12-month randomized controlled trial.
-- contrast Baker's study:
Effects of Aerobic Exercise on Mild Cognitive Impairment

Refining Exercise Prescription
to Promote Executive Functions in Older Adults
using Multi-State Transition Modeling
-- that description matches this study:
Resistance training and executive functions:
a 12-month randomized controlled trial.