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Comparison of methods to quantify volume during resistance exercise.

Jeffrey M McBride1, Grant O McCaulley, Prue Cormie

  • 1Department of Health, Neuromuscular Laboratory, Appalachian State University, Boone, North Carolina, USA. mcbridejm@appstate.edu

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PubMed
Summary

Calculating resistance exercise volume using different methods yields significantly different results, impacting comparisons between hypertrophy, strength, and power protocols. Method choice is crucial for accurate exercise analysis.

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Area of Science:

  • Exercise Physiology
  • Biomechanics
  • Sports Science

Background:

  • Accurate quantification of resistance exercise volume is essential for understanding training adaptations.
  • Existing methods for calculating exercise volume may yield different results depending on the exercise protocol and intensity.
  • Comparing diverse resistance training protocols requires a standardized and reliable method for volume calculation.

Purpose of the Study:

  • To compare four distinct methods for calculating resistance exercise volume.
  • To evaluate how these methods perform when analyzing protocols of varying intensities (hypertrophy, strength, power).
  • To determine if different volume calculation methods produce significantly different outcomes.

Main Methods:

  • Ten resistance-trained students participated in a randomized crossover design.
  • Three protocols were performed: hypertrophy (10 reps at 75% 1RM), strength (3 reps at 90% 1RM), and power (6 reps at 0% 1RM jump squats).
  • Volume was calculated using Volume Load (VL), Maximum Dynamic Strength Volume Load (MDSVL), Time Under Tension (TUT), and Total Work (TW).

Main Results:

  • Volume Load (VL) and Maximum Dynamic Strength Volume Load (MDSVL) showed significant differences between hypertrophy/strength and the power protocol.
  • Significant differences in Time Under Tension (TUT) were observed across all three protocols.
  • Total Work (TW) did not yield significant differences between the protocols.

Conclusions:

  • The choice of volume calculation method significantly influences the comparison of resistance exercise protocols with varying intensities.
  • Volume Load (VL) and Maximum Dynamic Strength Volume Load (MDSVL) are sensitive to intensity differences, unlike Total Work (TW).
  • Time Under Tension (TUT) also effectively differentiates between protocols of varying intensities.