Objective Accuracy in Estimating Repetitions in Reserve in the Back Squat: An Analysis between Experienced vs. Novice...

Area of Science:

• Sports Science
• Exercise Physiology
• Biomechanics

Background:

• Accurately estimating repetitions in reserve (RIR) is crucial for effective resistance training programming.
• Previous research has not definitively established whether resistance training (RT) experience influences RIR estimation accuracy.

Purpose of the Study:

• To objectively compare the accuracy of RIR estimation in the back squat between experienced and novice RT individuals.
• To investigate the role of mean propulsive velocity (MPV) and rating of perceived exertion (RPE) in objectifying RIR estimates.

Main Methods:

• Sixteen participants were divided into experienced (≥18 months RT) and novice (<18 months RT) groups.
• Participants performed back squats to failure, RIR3, and RIR1 at 70% of 1RM.
• MPV and RPE were measured to objectively assess RIR accuracy.

Main Results:

• No significant differences in RIR estimation accuracy were found between experienced and novice groups for RIR3 and RIR1.
• No significant differences were observed in MPV, velocity loss, RPE, or total repetitions between groups.
• Objective measures (MPV, RPE) did not reveal differences in RIR estimation accuracy based on RT experience.

Conclusions:

• RT experience does not appear to influence the accuracy of estimating RIR in the back squat.
• Familiarity with high-effort training may be more critical for accurate RIR estimation than years of RT experience alone.