principle
Linear Progression
Linear progression organizes training across weeks by moving from high volume and low intensity toward low volume and high intensity. All adaptations are trained every week with concurrent loading. The model works for novices because any stimulus drives gains. It plateaus on intermediate athletes after the first four to six weeks because no single quality receives enough concentrated signal to overcome diminishing returns.
How linear progression works
The classical model moves through four phases: hypertrophy (high volume, RPE 6 to 7), strength (moderate volume, RPE 7 to 8), power (low volume, RPE 8 to 9), and peaking. Each phase lasts two to four weeks with shifting emphasis. Within a phase, week-to-week increments target one variable. Reps add, or load adds, but not both on the same session.
The progression is unidirectional. Volume never returns to baseline mid-cycle. Intensity climbs until the peak, then resets at the start of the next macrocycle. The structure is the default first-cycle model for trainees in their first six to twelve months of structured loading, because any consistent stimulus drives novice strength gains.
Why intermediates plateau
The model breaks down past the novice phase because concurrent training of all qualities dilutes signal to any one of them. An intermediate trainee capable of pressing 24 kg single rep does not respond to mixed-quality weekly stress with continued gains. Maximum strength stops climbing because volume phases erode neural sharpness. Hypertrophy stops climbing because intensity phases cut weekly tonnage below the threshold for cross-sectional growth.
The intermediate solution is to concentrate stimulus per block. Block periodization replaces concurrent loading with sequential focus. One quality at a time receives the volume and intensity needed to push past the plateau. The trade-off is complexity. Intensification blocks demand precise sequencing with prior accumulation work.
For the comparative analysis applied to kettlebell training, see Linear vs block periodization.