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Direct linkSamuel J. Howarth; Erinn McCreath Frangakis; Steven Hirsch; Diana De Carvalho – Measurement in Physical Education and Exercise Science, 2024
The flexion relaxation ratio (FRR) of the lumbar extensor muscles is often assessed in experimental and clinical studies. This study evaluated within- and between-session test--retest reliability and measurement error for different FRR formulations. Participants completed two identical data collection sessions 1-week apart. Spine flexion and…
Descriptors: Exercise Physiology, Human Body, Pretests Posttests, Error of Measurement
