Glycemic Index vs. Calories In / Calories Out?

CA_Underdog

I wanted to call out a model that's been proposed by some researchers as an alternative to the calories in vs. calories out, that a high body fat percentage is more a symptom of eating a poor diet--

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2584816/

Both groups of rats had a similar calorie intake and expenditure. While both groups gained weight, the group of rats eating high-GI foods gained body fat while the group of rats eating low-GI foods gained lean mass. Upon conclusion of the study, the second group of rats was voluntarily more active.

Any thoughts on this study?

While that strongly endorses the glycemic index, in contrast, the 2010 Dietary Guidelines say this--

"Glycemic index and glycemic load have been developed as measures of the effects of carbohydrate-containing foods and beverages on blood sugar levels. Strong evidence shows that glycemic index and/or glycemic load are not associated with body weight; thus, it is not necessary to consider."

Meerataila

Interesting. A bit pissed they didn't do one for female rats as well.

"3) dietary composition can affect physical activity level." I think lots of us have sabotaged our gym visit with a crappy meal beforehand.

Acg67

I wanted to call out a model that's been proposed by some researchers as an alternative to the calories in vs. calories out, that a high body fat percentage is more a symptom of eating a poor diet--

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2584816/

Both groups of rats had a similar calorie intake and expenditure. While both groups gained weight, the group of rats eating high-GI foods gained body fat while the group of rats eating low-GI foods gained lean mass. Upon conclusion of the study, the second group of rats was voluntarily more active.

Any thoughts on this study?

While that strongly endorses the glycemic index, in contrast, the 2010 Dietary Guidelines say this--

"Glycemic index and glycemic load have been developed as measures of the effects of carbohydrate-containing foods and beverages on blood sugar levels. Strong evidence shows that glycemic index and/or glycemic load are not associated with body weight; thus, it is not necessary to consider."

Lol, try looking at some of the RCTs and meta analysis' on humans regarding GI index first before trying to conclude anything from rodent studies.

CA_Underdog

I reviewed the human trials and agree they're more mixed in their results.