The Efficacy of Manual Therapy and Pressure Biofeedback-Guided Deep Cervical Flexor Muscle Strength Training on Pain and Functional Limitations in Individuals with Cervicogenic Headaches: A Randomized Comparative Study.

"Conflicts of Interest The authors declare that there are no conflicts of interest."

"The authors are grateful to the Researchers Supporting Project number RSP2023R382, King Saud University, Riyadh, Saudi Arabia, for funding this research."

"The Ethics Committee of King Saud University approved this study (file ID: RRC-2022-04, dated: February 14, 2022), ensuring the protection of human and ethical rights in research involving human subjects. The study completed trial registration with ClinicalTrial.gov PRS (Identifier ID: NCT05692232). The 2013 revision of the Helsinki Declaration and the ethical rules of our university's Ethics Committee were followed. Each participant signed an informed consent form. Conclusion: Compared with manual therapy, pressure biofeedback-guided DCFM strength training showed a greater reduction in pain intensity (assessed using the VAS) at weeks two and three. However, both treatments were equally effective in lowering headache-related functional limitations in patients with CGH. This trial is registered with ClinicalTrial.gov PRS (Identifier ID: NCT05692232)."