Ahh protein, the constant gym debate.
http://journals.cambridge.org/action...07114512002516
Quote:
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...it appears that emerging dietary guidelines for protein are in the range of 1·2–1·6 g protein/kg/d. ... it is not yet possible to say that protein intakes higher than those suggested will be beneficial. What appears to be critical, as with the recommendations for carbohydrate, however, is that the timing of ingestion is very important. Put simply, protein should be consumed early during the post-exercise recovery phase (i.e., immediately to 2 h after exercise). Protein quality also appears to be important in maximizing the accretion of muscle proteins, so athletes would do well to focus on high quality protein sources such as dairy protein, eggs, and lean meat.
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There is also some evidence for quickly digested protein (ie whey) before a workout is beneficial. The article also goes on to talk about the importance of carbs for athletic performance, which are far, far more neglected than protein.
At the end of the day are you going to notice a difference with 160g compared to 130g of protein a day? Probably not, especially if you're just starting in the gym. Focus more on actually maintaining your gym routine, which will go a lot farther long term for health/muscle mass/etc.