The Effects of a Wrist Extensors Exercise With Blood Flow Restriction (BFR) in Lateral Elbow Tendinopathy.

A randomized cross-over trial comparing the immediate effects of a wrist extensor exercise with and without blood flow restriction (BFR) on pain perception in patients with lateral elbow tendinopathy (LET).

Patients with LET will participate in the study performing an exercise with and without blood flow restriction (BFR) in a randomized order (two occasions). A target of 20 patients for enrollment has been set for 80% power, p\<0.05 (Effect size= 1). Two interventions will be used lasting 40 minutes each. Intervention: A wrist extension exercise (concentric-eccentric) with Blood Flow Restriction (30-15-15-15 reps). Exercises will be performed using dumbbells according to a pain monitoring approach (\<2/10 in numerical pain rating scale). Control Group: A wrist extension exercise (concentric-eccentric) without Blood Flow Restriction (30-15-15-15 reps). Exercises will be performed using dumbbells according to a pain monitoring approach (\<2/10 in numerical pain rating scale). Primary outcomes: pressure pain thresholds lateral epicondyle, cervical spine and tibialis anterior (bilateral). Secondary outcome: pain free grip strength