Figure 4. The analog visual pain scale before and after heat in the heat wrap group

From

Continuous Low Level Heat Wraps; Faster Healing and Pain Relief during Rehabilitation for Back, Knee and Neck Injuries

Jerrold Petrofsky, Michael Laymon, Faris Alshammari, Iman Akef Khowailed, Haneul Lee

World Journal of Preventive Medicine. 2015, 3(3), 61-72 doi:10.12691/jpm-3-3-3