cron-web.org

[A1CR]

CRONie-A wrote:

> CRONie-B wrote:

>> FFM (fat-free mass - muscle)

That should be FFM = fat-free mass, I believe.

> This may be the explanation for the decrease in energy
> expenditure for CR'd monkeys (unclear), but in AL monkeys,
> they attribute it to less activity, independent of body
> composition.

There seems to be a "thermic effect of food" effect as well:

"Energy expended in physical activity was approximated as
the difference
between day and night EEs [(D-N) EE]; however, this would
also include the
thermic effect of food."

"There was no effect of CR on the physical activity of these
monkeys (mean
difference = 10 kcal; p = 0.61). Adjusting for FFM, physical
activity energy
expenditure did not differ between the CR and C monkeys
(mean difference
= -14 kcal; p = 0.63) with no significant interaction
(p=0.69) between age
and treatment. CR did not have an effect on (D-N) EE even
after adding FM
(p=0.86) to the model."

Raman A, Ramsey JJ, Kemnitz JW, Baum ST, Newton W, Colman
RJ, Weindruch R,
Beasley MT, Schoeller DA.
Influences of calorie restriction and age on energy
expenditure in the
rhesus monkeys.
Am J Physiol Endocrinol Metab. 2006 Aug 8; [Epub ahead of print]
PMID: 16896169