Effective Reps: Does Training To Failure Matter For Muscle Growth?

This entry is part [part not set] of 48 in the series Science Explained Series by Jeff Nippard

Introduction

Effective reps is a concept that has gained immense popularity in the science-based fitness community. It suggests that the last few reps right before you fail are the only reps that really matter for hypertrophy. This article will explore the concept of effective reps, its implications, and recent research findings related to it.

What are Effective Reps?

  • Effective reps is the idea that the closer a rep is to failure, the more effective it is at building muscle.
  • This concept has been popularized by Arnold Schwarzenegger and formalized by Dr. Carlos Urena in Alan Aragon’s research review.
  • It suggests that not all reps are created equal, and the last few reps before failure are more important for hypertrophy.

Research on Effective Reps

  • A study by Godo and colleagues (2005) found that subjects who performed ten continuous reps saw significantly more growth (12.9%) compared to those who rested mid-set (4%).
  • Dr. Mike Israetel, on the Revive Stronger podcast, suggested that the closer you get to failure, the more hypertrophic yield each repetition creates, but there is no clear cut-off point.
  • A recent study by Carol et al. found that training all the way to failure may actually be worse for muscle growth, especially for well-trained lifters.

Implications for Training

  • High rep sets should be taken very close to failure, especially for single joint isolation exercises.
  • For most sets, especially on compound lifts, it’s recommended to stay 1-3 reps shy of failure for safety and similar muscle gains.
  • Training hard is still important, even if not always going to failure, as there is no way to optimize your program without putting in the effort.
  • Drop sets and rest pause sets can have merit if programmed intelligently, considering the overall fatigue imposed by the program.

Conclusion

Although the effective reps theory has its limitations, it provides valuable insights into the importance of training intensity and the role of reps close to failure in stimulating muscle growth. To maximize hypertrophy, it’s essential to train hard and intelligently, incorporating high rep sets close to failure, staying a few reps shy of failure on compound lifts, and employing drop sets or rest pause sets when appropriate.

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