Comparison of the effectiveness of a behavioural graded activity program and manual therapy in patients with sub-acute neck pain

INTERVENTION: Behavioural graded activity program versus manual therapy CONDITION: Neck complaints ; Musculoskeletal Diseases ; Neck pain PRIMARY OUTCOME: 1. Global Perceived Effect (GPE); 2. Neck Disability Index (NDI) SECONDARY OUTCOME: 1. Numerical Rating Scale (NRS) ; 2. Tampa Scale for Kinesiophobia (TSK) ; 3. Distress, coping; 4. Four Dimensional Symptom Questionnaire (4 DKL); 5. Pain Coping and Cognition List (PCCL) ; 6. Costs INCLUSION CRITERIA: 1. Patients visiting the general practioner with non‐specific new complaint or new episode of complaint of the neck (four to 12 weeks). An episode of complaint is new if patients have not visited their General Practitioner (GP) for the same complaint the preceding six months 2. Aged between 18 and 70 years