Numbers of included trials and participants and results of meta-analyses were reported separately for each intervention. Most information was presented in tables.
Interventions were classified as strongly recommended (aerobic exercise and strength training), recommended (functional training and thermal baths), no recommendation possible (physiotherapy, craniosacral therapy, hydrogalvanic bath, lymphatic drainage and heat treatment with water-filtered mild infrared A radiation) and not recommended (chiropractic, hyperbaric oxygen, cold chamber, laser therapy, TENS/transcutaneous electrical nerve stimulation and transcranial direct current stimulation). Strong negative recommendations were given for operative quadrant intervention and massage.