It drives me crazy!
January 27th, 2010There is a reasonably well established relation between %1 RM and the number of reps you can perform with that weight, though this relationship has been shown to differ according to the exercise, muscle fiber type and training background of the client.
I assess trainers’ programs from time to time and one thing that drives me crazy is trainers prescribing percentages of 1RM without having done a 1RM test! That’s complete BS (sorry!)
If you want to use percentages you have to perform a 1RM test. You can also do a submax RM test and from that score predict a 1RM and from that 1RM calculate your training weight.
The predictions of 1RM from submax tests are not accurate and since there is also uncertainty about the number of reps you can do with a given percentage of your 1RM, you are basing your training programs on TWO steps filled with uncertainty - NOT recommended
Here is my typical approach, in situations where I don’t do a 1RM test.:
- I chose the repetition bracket based on the training goal (ex 8-12 for hypertrophy)
- I start the client of on a weight where the client experiences an RPE of 3-4 out of 5 when performing 8-9 reps.
- The weight is increased with 1-5 pounds (depending on the absolute load used) when 1 or more sets of 12 reps can be performed with spotless technique.
I am interested in learning how YOU start YOUR clients on a new exercise?
I honour the place in you where we are both one,
Karsten Jensen
PS: Whether a progression involves percentages or not, starting at the right level is crucial for long term success with periodized programs. We don’t want to break the athlete and we don’t want to waste their time either.
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