StrongFirst recommends a quick lowering ("fall with the bar"), and that you stand up and reset before each rep. 5 of those is a set of 5. It might be a new rep every 30 seconds but it might be longer. Be sure you are sufficiently recovered between reps, and don't be a slave to the clock -
Cluster Sets
This protocol falls into the category of Cluster Sets; short rest periods taken between individual repetitions (Inter-Repetition Rest, IRR).
It is an effective method for increasing Power and Strength, as well as maintaining and
Developing Technique.
Consecutive "Non-Stop Repetitions
The issues in performing "Non-Stop" back to back Repetitions in an exercise set is a...
1) Decrease in Power Output with each successive Repetition. Repetition 2 is slower than 1, Repetition 3 is slower than 2, etc.
2) You technique begins to fall apart.
This in part is cause by a decrease in...
ATP, Adenosine Triphosphate
Fast Twitch Muscle Fiber are dependent on ATP for movement, muscle contraction.
ATP is "The Gas" for Fast Twitch Muscle Fiber. Once ATP is depleted, the Fast Twitch Muscle Fiber responsible for Speed, Power and Strength are no longer involved. Speed, Power and Strength fall through the floor.
Restoration of ATP
Research (Dr Greg Haff, Mike Stone, etc) found that, "... A
fter 15 seconds of recovery the ability to perform a maximal voluntary contraction was restored to 79.7..."
Source: Effects of different set configurations on barbell velocity and displacement during a clean pull. Effects of different set configurations on barbell velocity and displacement during a clean pull. - PubMed - NCBI
Geoff Chafe;s 10 seconds between Repetitions is an effective Cluster Set Method; physically and mentally brutal.
Short Inter Repetition Rest Periods
Haff/Stone research found that short rest period between each repetition (10 -40 seconds) allow Fast Type IIa and "Super" Fast Type IIb/x Muscle Fiber restoration.
The rest difference in the length of the rest periods between each repetition was dependent on the Intensity involved with each repetition. That due to the fact that there is a direct common sense relationship between Intensity and Time
An increase with Intensity requires and Increase in Recovery Time; which ensures you are able to exert greater Strength, Power and Speed.
The short rest period between each repetition carries over to...
Technique Development
Technique development is optimized when you are fresh.
Once fatigue occur with any exercise, technique unravels with each repetition. That meaning it become a different exercise.
Also, the Muscle Firing Sequence changes.
Take Home Message
Cluster Set Training is a very effective method of Increasing Power and Strength along with Technique Development in a movement.
However, for Maximal Strength, at some point an exercise needs to be pushed to or near failure, infrequently.
The downside to doing that is that it promotes poor Technique in a Lift.
Thus, one of the keys to Increasing Strength in a Lift while averting Developing Poor Technique is to employ...
Auxiliary Exercises
Performing Auxiliary Exercise that are similar in nature to the lift allow you to maximally overload the muscle and nervous system.
The purpose and intent of Auxiliary Exercises is at some point in your training in a set to get the weight up anyway you can.
Employing Auxiliary Exercises in this manner allows you to maximally overload the muscles without Developing Poor Technique in the specified Lift.
Rotation of Auxiliary Exercises
Once and Auxiliary Exercise has been pushed to this limit, it needs to be replaced with another movement that is similar in nature (involves that same muscle groups and has a movement pattern similar to the Lift).
Kenny Croxdale