title: Swiss ball enhances lumbar multifidus activity in chronic low back pain: A letter to the editor.
authors.affiliation: Department of Clinical Therapies, University of Limerick, Limerick, Ireland. Electronic address: Mary.OKeeffe@ul.ie.
authors.forename: Mary
authors.initials: M
authors.lastname: O'Keeffe
authors.affiliation: School of Physiotherapy, Curtin University of Technology, Perth, Australia. Electronic address: P.OSullivan@curtin.edu.au.
authors.forename: Peter
authors.initials: P
authors.lastname: O'Sullivan
authors.affiliation: Musculoskeletal Research Unit, Department of Rehabilitation Sciences and Physiotherapy, University of Leuven, Leuven, Belgium. Electronic address: wim.dankaerts@faber.kuleuven.be.
authors.forename: Wim
authors.initials: W
authors.lastname: Dankaerts
authors.affiliation: Department of Clinical Therapies, University of Limerick, Limerick, Ireland. Electronic address: Kieran.osullivan@ul.ie.
authors.forename: Kieran
authors.initials: K
authors.lastname: O'Sullivan
mesh_terms: D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000628:therapy*; D008161:Lumbosacral Region / Q000503:physiopathology*; D008297:Male; D026741:Physical Therapy Modalities / Q000295:instrumentation*