A Randomised Clinical Trial to evaluate the effects of a new treatment of chronic neck-shoulder pain in Work-related MusculoSkeletal Disorder (WMSD) patients - Ambulant Myofeedback training

INTERVENTION: The intervention is 4 weeks ambulant myofeedback training. Control group receives traditional ergonomic counselling. CONDITION: Work‐related Musculoskeletal Disorders (WMSDs), Complaints of Arm, Neck and Shoulders (CANS) ; Injury, Occupational Diseases, Poisoning ; Dislocations, sprains and strains involving multiple body regions PRIMARY OUTCOME: Pain intensity and disability SECONDARY OUTCOME: 1. Health‐related quality of life; 2. Muscle activation patterns; 3. Psychosocial characteristics INCLUSION CRITERIA: 1. Elderly female subjects 2. Above the age of 35 years 3. Performing predominantly computer work 4. Reporting complaints in the neck and/or shoulder region for at least 30 days during the last year including the last 7 days 5. Subjectively relating complaints to (computer) work