Volume-Intensity by Pavel Tsatsouline
Tsatsouline, Pavel. 2005. Beyond Bodybuilding, pp. 104-105. Dragon Door Publications.
The inverse relationship between the loading volume and intensity ('you can't sprint a marathon') is a myth. All volume/intensity combos serve their purposes.
Medium/medium workouts are the bread and butter of training.
High/high sessions push one into mild overtraining and lead to greater gains once followed by a taper.
Low/low sessions are used for active recovery or when the team is likely to go into combat.
Low/highs set PRs.
High/lows build foundation of stable gains.
Then there are medium/highs, low/mediums... Every combo has its purpose. This is a good time to dispel a myth popular in the West, that the volume and intensity are inversely related - the higher the intensity, the lower the volume and vice-versa. Smart men like US Armed Forces Powerlifting Champion Jack Reape and Belorussian kettlebell expert N.V. Galenchik, stress that volume and intensity must be uncoupled. 'Overall load [sets, reps, proximity to failure, rest between sets, the number and order of exercises, the degree of recovery from the last workout, the length of the session, etc.] must vary so that some days you barely leave... and others you would love to do more but can't - the plan forbids.' (Galenchik, 1999)