The authors hypothesized that the PST measurement would have good interrater reliability based on the nature of the testing procedures. With regard to validity, it was hypothesized that a strong positive relationship would exist between PST and IR with little or no relationship between PST and ER.
Active measurements of IR and ER were used to establish validity since participants were healthy and without injury or neuromuscular impairments therefore soft tissue tightness was the most likely
limiting factor for all measurements