Clarifying Scientific Priority and Existing Normative Values for Single-Leg Bridge Endurance

This correspondence addresses claims of novelty in the recently published article by Worst and Henderson (2026) regarding normative values for the single-leg bridge (SLB) endurance test. While the authors contribute valuable insights into clinician assessment accuracy, their assertion that normative SLB values for healthy young adults are currently "lacking" or "first" reported in 2026 overlooks foundational data published in 2021 (Lehecka et al.). This letter clarifies the methodological and demographic confluence between the Gluteal Endurance Measure-B (GEM-B) and the SLB test, noting that normative values established via electromyographic median frequency shifts and visual estimation have been available since 2021. Correcting the scientific record ensures accurate attribution and maintains the evidentiary lineage required for evidence-based practice and future meta-analyses.