Efficacy of Vitamin C Supplement vs Spinal Manipulation to Treatment in Lateral Epicondylitis

A randomized clinical trial will be conducted. 130 subjects diagnosed with lateral epicondylitis will be studied. 3 intervention groups will be formed. Experimental group 1 will receive a 1000mg daily vitamin C supplement along with the usual practice of manual therapy and TENS. Group 2 will undergo high-speed vertebral manipulations along with manual therapy and TENS. In group 3 or control, manual therapy and transcutaneous electrotherapy (TENS) will be applied. All groups will receive the same manual therapy program and TENS, one session per week for 6 consecutive weeks. Data analysis: The data will be entered in the SPSS statistical package (version 21.0) for analysis). Statistical analysis will be performed with a 95% confidence interval, meaning that those whose P is \<0.05 will be considered significant values.