Backsaver's Sit-and-Reach Test to assess Hamstring Length The next test that you could use to assess for tight hamstrings is the Backsaver Sit-and-Reach Test (BSSR). Ayala et al. (2012) compared 5 different clinical tests to assess hamstring length and found an intra-rater ICC of 0.97 for the BSSR when a standard sit-and-reach box was used. We are talking about shortened hamstrings if the patient is not able to at least touch his toes in the test position. For the visual method (like shown in th