Using Perceptual And Neuromuscular Responses To Estimate Mechanical Changes During Continuous Sets In The Bench Press

ASU Author/Contributor (non-ASU co-authors, if there are any, appear on document)
N. Travis Triplett Ph.D., Professor (Creator)
Appalachian State University (ASU )
Web Site:

Abstract: The present study analyzed the effectiveness of the OMNI-RES (0-10) and the electromyographic signal for monitoring changes in the movement velocity during a set to muscular failure performed with different relative loads in the bench press exercise (BP). Ten males (30.8 ± 5.7 years) were evaluated on eight separate days with 48 hours of rest between sessions. After determining the 1RM value, participants performed seven sets to failure with the following relative loads ranges: 30<40%; 40<50%, 50<60%, 60%<70%, 70<80%, 80<90% and >90%. The mean accelerative velocity (MAV), the Rating of Perceived Exertion (RPE) and the normalized root mean square (N-RMS) signal from the anterior deltoids were measured for every repetition of each set. The RPE expressed after the first repetition and when the maximum value of MAV was achieved over the sets was lower (p <0.001, d >0.80) than the RPE associated with a 10% drop in MAV and at failure. Furthermore, the initial RPE was useful to distinguish different loading zones between the light relative loads (30<40% vs.40<50% vs. 50<60%) and from these three zones to the higher relative load ranges (60 to>90%). Similar, but less clear, differences were observed for the N-RMS. In conclusion, apart from differentiating between relative loads, the RPE and in some cases N-RMS can both reflect changes associated with the initial, maximal, 10% drop in movement velocity and muscular failure during a continuous set in the BP.

Additional Information

Chapman, M., et al. (2018). "Using Perceptual and Neuromuscular Responses to Estimate Mechanical Changes During Continuous Sets in the Bench Press." The Journal of Strength & Conditioning Research. doi: 10.1519/JSC.0000000000002516. Publish Ahead of Print version. Publisher version of record available at:
Language: English
Date: 2018
OMNI-RES (0-10) scale, EMG, root mean square, muscular failure, accelerative velocity, resistance training

Email this document to