title: Whole-body vibration in breast cancer survivors: a pilot study exploring its effects on muscle activity and subjectively perceived exertion.
abstract: The aim of this study was to analyse muscle activity and subjectively perceived exertion [rating of perceived exertion (RPE)] during whole-body vibration (WBV) in breast cancer survivors. Twenty breast cancer survivors and 20 healthy controls performed isometric squats on a vibration platform. RPE and muscle activity (surface electromyography) of the rectus femoris, vastus medialis, biceps femoris, tibialis anterior and gastrocnemius were recorded under the following conditions: nonvibration (0 Hz) and vibration (20-30-40-50 Hz) conditions. No significant differences were found between groups with regard to muscle activity (P=0.471) and RPE (P=0.629). Only for vastus medialis was muscle activity higher at 20 and 30 Hz compared with 40 and 50 Hz (P<0.05). RPE increased with increasing vibration frequency; however, no difference was found between 20 and 30 Hz (P=0.088). WBV at 20 and 30 Hz revealed lower subjectively perceived exertion and the highest muscle activity and therefore provide the optimal modalities for WBV in breast cancer survivors.
authors.affiliation: aDepartment of Physical and Rehabilitation Medicine bCenter of Sports Medicine, Ghent University Hospital cUnit of Medical Informatics and Statistics, Department of Public Health dDepartment of Movement and Sports Sciences, Ghent University, Ghent, Belgium.
authors.forename: Barbara
authors.initials: B
authors.lastname: Van Ruymbeke
authors.forename: Jan
authors.initials: J
authors.lastname: Boone
authors.forename: Pascal
authors.initials: P
authors.lastname: Coorevits
authors.forename: Guy
authors.initials: G
authors.lastname: Vanderstraeten
authors.forename: Jan
authors.initials: J
authors.lastname: Bourgois
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000503:physiopathology* / Q000628:therapy*; D004576:Electromyography; D005260:Female; D006801:Humans; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000503:physiopathology*; D010147:Pain Measurement; D010809:Physical Fitness; D010865:Pilot Projects; D014732:Vibration / Q000627:therapeutic use*