Old studies on #vegetarian runners focused on people who were veg*n for as few as 4 days. Results: no effect on #running perf.
New studies looking at veg*n for 4 years+ show
- higher vo2 max
- longer time to exhaustion
- better aerobic capacity
- other metrics the same
Other metric, no difference. No data on life-long #vegan s, so this is comparing, say 35 years of meat vs 31 years of eating meat.