title: Therapeutic effect of whole body vibration on chronic knee osteoarthritis.
abstract: OBJECTIVE
  To investigate the effect on pain reduction and strengthening of the whole body vibration (WBV) in chronic knee osteoarthritis (OA).
  
  
  METHODS
  PATIENTS WERE RANDOMLY DIVIDED INTO TWO GROUPS: the study group (WBV with home based exercise) and control group (home based exercise only). They performed exercise and training for 8 weeks. Eleven patients in each group completed the study. Pain intensity was measured with the Numeric Rating Scale (NRS), functional scales were measured with Korean Western Ontario McMaster score (KWOMAC) and Lysholm Scoring Scale (LSS), quadriceps strength was measured with isokinetic torque and isometric torque and dynamic balance was measured with the Biodex Stability System. These measurements were performed before training, at 1 month after training and at 2 months after training.
  
  
  RESULTS
  NRS was significantly decreased in each group, and change of pain intensity was significantly larger in the study group than in the control group after treatment. Functional improvements in KWOMAC and LSS were found in both groups, but no significant differences between the groups after treatment. Dynamic balance, isokinetic strength of right quadriceps and isometric strengths of both quadriceps muscles improved in both groups, but no significant differences between the groups after treatment. Isokinetic strength of left quadriceps did not improve in both groups after treatment.
  
  
  CONCLUSIONS
  In chronic knee OA patients, WBV reduced pain intensity and increased strength of the right quadriceps and dynamic balance performance. In comparison with the home based exercise program, WBV was superior only in pain reduction and similarly effective in strengthening of the quadriceps muscle and balance improvement.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Dongguk University College of Medicine, Goyang, Korea.
authors.forename: Young Geun
authors.initials: YG
authors.lastname: Park
authors.forename: Bum Sun
authors.initials: BS
authors.lastname: Kwon
authors.forename: Jin-Woo
authors.initials: JW
authors.lastname: Park
authors.forename: Dong Yeon
authors.initials: DY
authors.lastname: Cha
authors.forename: Ki Yeun
authors.initials: KY
authors.lastname: Nam
authors.forename: Kyoung Bo
authors.initials: KB
authors.lastname: Sim
authors.forename: Jihea
authors.initials: J
authors.lastname: Chang
authors.forename: Ho Jun
authors.initials: HJ
authors.lastname: Lee
keywords: Knee; Muscle strength; Osteoarthritis; Pain; Vibration
references.citation: Ann Rheum Dis. 1993 Apr;52(4):258-62
references.pmid: 8484690
references.citation: J Rheumatol. 2006 Nov;33(11):2271-9
references.pmid: 17013996
references.citation: Scand J Work Environ Health. 1986 Aug;12(4 Spec No):413-6
references.pmid: 3775331
references.citation: J Neurol Neurosurg Psychiatry. 1966 Feb;29(1):1-11
references.pmid: 5910574
references.citation: Int Arch Occup Environ Health. 1987;59(3):205-20
references.pmid: 2952598
references.citation: Gait Posture. 2007 Jul;26(2):309-16
references.pmid: 17074485
references.citation: Exerc Sport Sci Rev. 2003 Jan;31(1):3-7
references.pmid: 12562163
references.citation: Knee. 2007 Jun;14(3):224-30
references.pmid: 17395467
references.citation: Med Sci Sports Exerc. 2003 Oct;35(10):1745-50
references.pmid: 14523314
references.citation: J Neurophysiol. 1968 Mar;31(2):301-34
references.pmid: 4972033
references.citation: Curr Womens Health Rep. 2001 Dec;1(3):218-24
references.pmid: 12112973
references.citation: Somatosens Mot Res. 1996;13(3-4):273-86
references.pmid: 9110430
references.citation: BMJ. 2002 Oct 5;325(7367):752
references.pmid: 12364304
references.citation: Int Arch Occup Environ Health. 1986;58(1):1-26
references.pmid: 3522434
references.citation: J Orthop Sci. 2009 Mar;14(2):182-91
references.pmid: 19337810
references.citation: Int Arch Occup Environ Health. 1987;59(4):323-36
references.pmid: 3497111
references.citation: Osteoarthritis Cartilage. 2001 Nov;9(8):746-50
references.pmid: 11795994
references.citation: Am J Phys Med Rehabil. 2006 Dec;85(12):956-62
references.pmid: 17117001
references.citation: J Neurophysiol. 2005 Nov;94(5):3023-36
references.pmid: 16014802
references.citation: Am J Sports Med. 1991 Jan-Feb;19(1):76-81
references.pmid: 2008935
references.citation: J Bone Joint Surg Am. 1999 Apr;81(4):539-48
references.pmid: 10225800
references.citation: Arthritis Care Res (Hoboken). 2012 Apr;64(4):465-74
references.pmid: 22563589
references.citation: Ann Rheum Dis. 1957 Dec;16(4):494-502
references.pmid: 13498604
references.citation: Am J Phys Med Rehabil. 1995 Sep-Oct;74(5):364-9
references.pmid: 7576413
references.citation: J Bone Joint Surg Br. 1991 Jan;73(1):53-6
references.pmid: 1991775
references.citation: Br J Sports Med. 2005 Nov;39(11):860-5
references.pmid: 16244199
references.citation: J Neurophysiol. 2005 Nov;94(5):3037-45
references.pmid: 16222071
references.citation: Ann Phys Rehabil Med. 2009 Jul;52(6):485-96
references.pmid: 19473905
references.citation: Knee. 2009 Aug;16(4):256-61
references.pmid: 19147365
references.citation: J Strength Cond Res. 2004 Nov;18(4):828-32
references.pmid: 15574090
references.citation: Clin Physiol. 1999 Mar;19(2):183-7
references.pmid: 10200901
references.citation: J Rheumatol. 2006 Apr;33(4):744-56
references.pmid: 16583478
references.citation: J Sports Sci. 1994 Dec;12(6):561-6
references.pmid: 7853452
references.citation: Curr Opin Rheumatol. 2004 Mar;16(2):143-7
references.pmid: 14770101
references.citation: Clin Physiol Funct Imaging. 2002 Mar;22(2):145-52
references.pmid: 12005157