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Post hoc analysis of pain scores including data in all different conditions in Trč 2011 between collagen peptide and placebo. Better pain control is shown if favor collagen peptides or placebo. Trč 2011: VAS measured in pain right now. Trč 2011*: VAS measured of typical or average pain Trč 2011**: VAS measured of pain level at its best. Trč 2011***: VAS measured of pain level at its worst
