Search Strategy

Four electronic databases were searched from 25 September 2019 up until 30 August 2020: PubMed, CINAHL, SPORTDiscus and Embase. The search strategy included key terms related to posterior chain resistance training, exercise, low back pain and quality of life. Table 1 outlines the search terms applied to individual databases. Two independent reviewers (NT and TC) screened the titles and abstracts of the studies against the inclusion and exclusion criteria. Reference lists of included papers were reviewed for potential inclusions. The reviewers further assessed full-text papers for inclusion; a third reviewer (JK) moderated any discrepancies.

Applied search terms during systematic review

(“Posterior chain ‘s exercise” OR deadlift OR “hip lift” OR “back extensions” OR “back training” OR “back exercise” OR “resistance training” OR “resistance exercise” OR “physical exercise” OR “physical activity”)

AND

(“Low back pain” OR “chronic non-specific low back pain” OR “back pain” OR “chronic low back pain”)

AND

(“Quality of life” OR “pain” OR “function” OR “activities of daily living” OR “ADL” OR “strength” OR “movement”)

NOT

(“hydrotherapy” OR “water exercise” OR “swimming”)