Title and Objective: This study was conducted to investigate the effect of 6 weeks of aquatic exercise on pain intensity and loading rate in patients with non-specific chronic low back pain.

Materials and Methods: This randomized, double-blind clinical trial included 40 men with non-specific chronic low back pain who met the inclusion criteria and were approved by a neurologist and a spine specialist. They were randomly assigned to the aquatic exercise group (mean age 43.4 ± 44.7) and the control group (mean age 43.5 ± 50.4). Pain intensity and loading rate were measured using the visual analog scale and the foot pressure foot jump, respectively. The intervention groups performed the prescribed exercises three times a week for six weeks.

Results: The results of the study showed that the intervention groups demonstrated a significant reduction in pain with a large effect size (P = 0.001, η2 = 0.801). Additionally, the intervention groups showed significant differences in loading rate (P = 0.012, η2 = 0.144).

Conclusion: This study investigated the impact of aquatic exercises on pain management in men with non-specific chronic low back pain. The findings of the current study indicate that pain, fear of movement, kinematic variables of walking, and lumbopelvic stability in patients with non-specific chronic low back pain may be influenced by aquatic therapy. The primary goal of aquatic therapy is to teach patients how to use water as a therapeutic modality for improvement. Therefore, along with other modalities and treatments, aquatic therapy can play a role in the chain of patient improvement. Physicians, physiotherapists, and occupational therapists can utilize open and closed kinetic chain exercises in water as part of a comprehensive rehabilitation program for patients with chronic low back pain.