Glutamine for post exercise leaking gut?

http://www.livestrong.com/article/403686-natural-sources-of-l-glutamine/

http://jap.physiology.org/content/116/2/183.long

Glutamine prevented a rise in intestinal permeability as measured by the urinary excretion ratio of lactulose and rhamnose (L/R ratio). The L/R ratio was higher in the PLA trial compared with rest and GLN trials. *P < 0.05, statistically significant from the rest trial; **P < 0.05, statistically significant from the PLA. Data are means ± SD, n = 8.

It is endurance training:

"Each exercise trial consisted of a 60-min treadmill run at 65–70% of V̇O2max in an environmental chamber set at 30°C and a humidity range of 12–20%." 

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4255255/pdf/12192_2014_Article_528.pdf