Acute Dietary Protein Intake Restriction Is Associated with Changes in Myostatin Expression after a Single Bout of Resistance Exercise in Healthy Young Men
A study from the Netherlands is showing that skeletal muscle satellite cells are important in myogenic adaptive response during exercise.
While the study has not established nutrition’s role in this function, it was able to show that dietary protein intake does not modulate post-exercise increase in satellite cell content, but it does modify myostatin expression in skeletal muscle tissue
Findings are published in The Journal of Nutrition.
Twenty young men in their early 20s participated in the study by submitting to a controlled diet that gave them either 1.2 grams of protein per kg of body weight or .1 gram of protein per kg of body weight.
On day two of the diet participants did a single bout of resistance exercise and then underwent muscle biopsies from the vastus lateralis. The biopsies were collected at 12, 24, 48 and 72 hours following exercise.
There was no differences between groups.
Their conclusion was dietary protein intake does not modulate the post-exercise increase in satellite cell content but does modify myostatin expression in skeletal muscle tissue.
http://jn.nutrition.org/content/144/2/137.abstract?sid=8c7bb380-8b44-4c3b-a906-e8e66c63eee8
