Findings provided concurrent validation of the OMNI-RES to measure RPE for the active muscle and overall body in young recreationally trained female and male weight lifters performing upper- and lower-body resistance exercise.

Concurrent and construct evidence supports use of the OMNI Scale by adult women and men to estimate RPE during cycle exercise.

Responses established concurrent and construct validity of the Children's OMNI-Step Scale over a wide intensity range. The OMNI-Step Scale is not influenced by pictorials' gender and is effective in assessing both undifferentiated and differentiated RPE in young children.

Findings provided concurrent validation of the Children's OMNI-RES to measure RPE for the active muscle and overall body in 10- to 14-yr-old females and males performing upper and lower body resistance exercise.

Both the Borg and OMNI walk/run scales demonstrate predictive utility as markers of the blood lactate response to incremental exercise in individuals with the metabolic syndrome.