Sounds useless but the results make sense. The mice who ran "freely" were happy and benefited. The mice forced to run were stressed and did worse with UC symptoms.
Hmmm that reminds me of something. Work satisfaction is the same way.
www.news-medical.net/news/20130703/Researchers-report-that-aerobic-exercise-can-lessen-or-worsen-ulcerative-colitis-symptoms.aspxThe researchers found that voluntary wheel running significantly reduced the expression of some pro-inflammatory genes in the colon in the mouse model of colitis, while forced treadmill running significantly increased expression of many of those same genes. Forced running on a treadmill by itself, but not voluntary wheel running, also increased expression of an antibacterial signaling protein, suggesting that forced exercise disrupted the microbial environment of the gut.