I didn't place it just after I complained about your lack of non-epidemiological studies, it was before that. I didn't say it proved any causal relationship, but rather that its being looked into, and yes its a hypothetical, and i don't see how it has muddier data, when rather than being based around some questionnaire actual tests were performed on the subjects.

With regards to the studies; I said that long running sessions have a negative affect on weight loss and [2] says that long high intensity sessions increase cortisol secretion, [3] says high cortisol leads to increased fat storage. I said high intensity show burts of exercise increase fat loss, that includes [4] [5] showing increased metabolic expenditure post exercise and [6] directly showing short high intensity interval training being better for weight loss that steady state exercises. Also I dont see how the fact that [7] shows a long swimming race being an issue, and if you actually read [8] the resistance exercise took place over 90 minutes sessions, well past the anaerobic area of short high intensity training.

Look I am all for running, I try to get out and do 10-15km per week, but blanket statements that say you should run 1hr every day and all is well, are not backed by science.