Greater Muscle Retention
Whenever you're going on a lower calorie diet, one of the first issues that will become a growing concern is lean muscle mass loss. Since you will not be supplying enough calories to fully support all the energy needs required throughout the day, you're forcing your body to turn to stored body tissues for energy.
In the best case scenario this will come from your body fat tissue, and in the worst case scenario the body will tap into your muscle for energy. Typically on the average weight loss diet it's a mix of both.
One study performed out of Boston tested the variations in lean muscle mass gains as well as total fat loss when subjects either took casein protein hydrolysate in comparison with a whey protein hydrolysate, while also eating a hypocalorie diet and performing resistance training.
While both groups did show fat loss, the group using the casein protein showed greater mean fat loss and higher increases in strength for the chest, shoulders, and legs.
In addition to this, it was also noted that the casein group came out of the study with a higher total body percentage of lean mass compared with their previous measure. This indicates a greater lean body retention rate, demonstrating casein to be especially effective at maintaining muscle.
If you aren't taking enough protein in during a diet, it won't make a difference what form you're using, you will still lose muscle tissue.
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Greater Fat Loss
Since casein protein is a form of protein that is higher in calcium content that also proves to be a benefit in terms of total fat loss. Many individuals are quick to turn away from dairy products while attempting to lose body fat because they feel it will slow them down.
This is completely opposite from the truth. One study that was conducted by the International Journal of Obesity observed that those who combined a high calcium intake over a twenty four hour period with a normal protein intake showed increased fecal fat and energy excretion for that day of approximately 350 kJ greater than those who either took in a low calcium, normal protein intake or those who consumed a high protein, high calcium intake.
This study makes mention of the importance of total protein intake with this factor, stating that it appears as though moderate levels of protein create this effect with the calcium greater than very high protein intakes do.
It appears from this research then that it's best to find a good balance between calcium and protein intake, rather than just increasing protein up higher to promote fat loss.
Helps Promote Colon Health
Another very important benefit of casein protein powder is that it helps promote colon health. In a study performed out of Australia, researchers investigated the health benefits of various proteins and found that dairy proteins promote colon health better than meat and soy. This proves to be yet another reason why you should strongly consider adding casein protein to your daily intake.
Higher Quality Of Protein
"Casein is one of the best high quality sources of protein available."
Finally, the last benefit you'll receive by introducing casein protein into your diet is that of it being one of the best high quality sources of protein available.
While meeting your minimum protein requirements is always top priority, if you're taking in high quality sources of protein to meet these requirements less will be excreted by the body and you'll need less overall to maintain lean muscle mass.