Others have also found correlations between weak quadriceps
muscles, increased pain and inferior walking patterns [9]. That
was the rationale for the self-massage study focusing on the
quadriceps muscle [3]. However, the findings from the present
study suggest that it may be necessary to massage both the
hamstrings and the quadriceps muscles to achieve increased ROM
insofar as the hamstring muscles are noted to work together to
flex the knee.