Ratter, Julia Several submaximal exercise tests are reliable, valid and acceptable in people with chronic pain, fibromyalgia or chronic fatigue: a systematic review. [electronic resource] - Journal of physiotherapy Sep 2014 - 144-50 p. digital Publication Type: Journal Article; Review; Systematic Review ISSN: 1836-9561 Standard No.: 10.1016/j.jphys.2014.06.011 doi Subjects--Topical Terms: AdultAgedAged, 80 and overChronic Pain--therapyExercise Test--methodsFatigue Syndrome, Chronic--therapyFemaleFibromyalgia--therapyHumansMaleMiddle AgedPsychometricsReproducibility of ResultsTreatment OutcomeWalking