Post-exercise soreness is painful and debilitating. Eccentric exercise (lengthening muscle contractions), such as downhill walking, often causes sore muscles by triggering muscle injury and secondary muscle inflammation. Most studies found that popular remedies such as ice, non-steroidal anti-inflammatory drugs (e.g., Advil), and heat don’t work. A British study showed that massage after downhill walking decreased soreness and increased jumping ability at 48 and 72 hours of recovery. Massage promotes recovery from eccentric exercise.
Source: Medicina Sportiva, 13: 61-66