​​​​The purpose of this study was to physiologically validate the newly Arabic (translated format) of OMNI scale for resistance training (OMNI- Resistance) at different exercise intensities using estimation paradigm. Method:

Twenty five young female subjects performed latissimuss pull-down (LP), knee extension (KE), and seated
rowing (SR) resistance exercises. Subjects completed three sits of 10 repetitions of each exercise (at 25%, 50%
and 70% of one- repetition maximal (1RM %). Rating of perceived exertion for the active muscles (RPE-AM) and for the Overall body (RPE-O) were measured for each exercise during the tenth repetition. Correlations of RPE and 1RM% at the final repetition were (.95-.96) and regression functions were statistically significant (p < 0.01). Differences between (RPE-O) and (RPE -AM) between intensities and at each site were examined using ANOVA for repeated measures. At all exercises, (RPE-AM) were higher than (RPE-O) (P≤.05). ANOVA showed a progressive intensity effect as 1RM% was increased (P<.01). The Arabic translated version of the (OMNI-RES) scale of perceived exertion concurrent validity is established. The scale may be used by young and
healthy females for exercise programming and evaluation.