We examined the effects of @ wk of aerobic exercise combined with either a low-glycemic index diet ( @ U ) plus exercise ( LoGIX ) or a high-glycemic index diet ( @ U ) diet plus exercise ( HiGIX ) on plasma leptin and adiponectin ( total and high molecular weight -LSB- HMW -RSB- ) in @ older obese adults ( age = @ @ yr , body mass index = @ @ kgm ) .