Hi-
I guess I am too late! That was great elaineyue remembered Maribeth's(which is my birth name btw, no relation) post from a couple of years ago!
Shaz, IMO, the low-ends are intensifiers, like holds and pulses. I don't know if that is Cathe's reason for doing them or not!
Cathy, I am glad you found what you were looking for.
Take care,
Mari
Oh! There have been small (and I mean small-note # of participants
) studies done on this topic also:
Moderate Lifting After
Heavy Lifting May
Increase Muscle Size
The authors of this study set out to determine what happens if “hypertrophy” training (moderate intensity, moderate sets) is conducted immediately after “strength” training (high intensity, low reps). The hypothesis was that the total volume of exercise of the combined program would exceed that of the strength program alone, and that the intensity would affect post-exercise lactate and growth hormone responses.
Eight male recreational lifters were tested for this study. The participants did five “strength” sets at up to 90% of their 1 rep maximum, with long rest periods between sets. Thirty seconds after concluding their final “strength” set, they completed one “hypertrophy” set at 50% 1RM
The results suggest that a single set of 50% 1 RM after 5 sets of strength training produces a greater lactate and growth hormone response than another high weight, low rep set. This supports the idea that adding 1 set of high reps to a strength conditioning program may provide an extra boost in lactate and growth hormone levels to help increase size, too.
K. Goto et al., A single set of low intensity resistance exercise immediately following high intensity resistance exercise stimulates growth hormone secretion in men. Journal of Sports Medicine and Physical Fitness 43:243-249, 2003
Low Intensity Sets
Increase Growth Hormone
Concentrations
The same researchers from the previous study also compared the lactate and growth hormone effects of low intensity sets to failure.
What they discovered was that when adding a set of 30 – 50% of the 1RM immediately after a series of sets of near-maximal lifts, the result was an increase in growth hormone levels and hypertrophy. The take-home message: If you are considering adding a submaximal set to a sequence of heavy sets in order to increase size while increasing strength, use loads higher than 30% and lower than 70% of 1-RM.
K. Goto et al., Growth hormone response to training regimen with combined high- and low-intensity resistance exercise. International Journal of Sport and Health Science 2:111-118, 2004