I agree, if your trying to burn fat than do so on a empty stomach. The protein shake may be used as fuel for the cardio, where you want your bodyfat to be used as fuel.tzan said:I would like to hear some more opinions on this. For fat burning, wouldn't an empty stomach be more productive??
BBkingpin said:Don't you take ECA stack with the AM cardio? Doesn't this create a thermogenic environment where the fat is used first? I've found that 2g of HMB with 2-5g of L-Glutamine before the AM cardio will burn ONLY FAT and preserve ALL lean muscle.
Delinquent said:Here's an abstract I remember reading courtesy of Nandi12 over at cuttingedgemuscle.com. Thanks Nandi12.
Am J Physiol Endocrinol Metab 2002 Sep;283(3):E565-72
A preexercise alpha-lactalbumin-enriched whey protein meal preserves lipid oxidation and decreases adiposity in rats.
Bouthegourd JC, Roseau SM, Makarios-Lahham L, Leruyet PM, Tome DG, Even PC.
Unite Mixte de recherche de Physiologie de la Nutrition et du comportement alimentaire, Institut National de la Recherche Agronomique, Institut National Agronomique Paris-Grignon, F75231 Paris, France.
The composition of the preexercise food intake is known to affect substrate utilization during exercise and thus can affect long-term changes in body weight and composition. These parameters were measured in male rats exercised 2 h daily over 5 wk, either in the fasting state or 1 h after they ingested a meal enriched with glucose (Glc), whole milk protein (WMP), or alpha-lactalbumin-enriched whey protein (CPalphaL). Compared with fasting, the Glc meal increased glucose oxidation and decreased lipid oxidation during and after exercise. In contrast, the WMP and CPalphaL meals preserved lipid oxidation and increased protein oxidation, the CPalphaL meal increasing protein oxidation more than the WMP meal. At the end of the study, body weight was larger in the WMP-, Glc-, and CPalphaL-fed rats than in the fasted ones. This resulted from an increased fat mass in the WMP and Glc rats and to an increased lean body mass, particularly muscles, in the CPalphaL rats. We conclude that the potential of the CPalphaL meal to preserve lipid oxidation and to rapidly deliver amino acids for use during exercise improved the efficiency of exercise training to decrease adiposity
BBkingpin said:
I guess that about solves it. So much for everyone's theories.

Working out after consuming whey protein resulted in more muscle retention and nearly as much fat-burning as working out in a fasted state. Working out after consuming whey protein preserved more muscle and burned more fat than working out after consuming glucose or slowly digesting protein.OAKBOX said:Could we translate this into layman's terms... for others, though uh, not me, ya know... um, ok...
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