Sport Periodisation Block Planner

A well-structured run-in to competition is built from focused training blocks, each developing one quality at a time rather than trying to train everything simultaneously. This planner counts the weeks between today and your event, then divides them into accumulation, intensification, peaking, and taper phases with concrete start and end dates.

Block periodisation: the underlying concept

Block periodisation (also called conjugate-sequence training in its Soviet-influenced form) sequences training into concentrated blocks where each phase emphasises specific physical qualities. The principle is that you cannot simultaneously maximise volume, intensity, and specificity — instead you sequence them:

1. Accumulation — high volume, moderate intensity; builds aerobic base, work capacity, and foundational strength
2. Intensification — reduced volume, higher intensity and specificity; converts that capacity into sport-relevant fitness
3. Realisation/Peaking — low volume, very high intensity; sharpens competition-specific qualities
4. Taper — sharp volume reduction (40–60%), maintained intensity; allows accumulated fatigue to dissipate while fitness is retained

The alternative — concurrent periodisation, where all qualities are trained in every session — works for beginners but limits how high advanced athletes can push any single quality. Block periodisation allows qualities to be developed sequentially to higher peaks.

How the planner allocates weeks

The tool counts whole weeks from today to competition, then allocates each phase a proportional share:

accumulation    ≈ 40% of total weeks
intensification ≈ 30% of total weeks
peaking         ≈ remaining (after taper reserve)
taper           ≈ 15% (capped at 3 weeks)

Compressed model (under 6 weeks): when the run-in is short, there is not enough time to build meaningful volume and then fully peak. The planner drops the dedicated accumulation block, extends intensification, and reserves a short but essential taper.

Worked examples

16 weeks to race day (4-phase):

• Accumulation: weeks 1–6 (build volume)
• Intensification: weeks 7–11 (raise intensity, sport-specific work)
• Peaking: weeks 12–14 (sharpen)
• Taper: weeks 15–16 (volume down, intensity held)

24 weeks to race day (4-phase):

• Accumulation: weeks 1–10
• Intensification: weeks 11–17
• Peaking: weeks 18–21
• Taper: weeks 22–24

5 weeks to race day (compressed 3-phase):

• Intensification: weeks 1–3 (no accumulation time available)
• Peaking: week 4
• Taper: week 5

Taper science

Research on tapering across endurance, strength, and team sports consistently supports two findings:

1. Volume should drop 40–60% during the taper, while training frequency and intensity are maintained. Dropping intensity during the taper causes greater performance loss than dropping volume.
2. Duration: 1–3 weeks is the evidence-supported range. Too short a taper leaves accumulated fatigue in place; too long causes detraining and psychological flatness.

The planner caps the taper at 3 weeks and targets roughly 15% of total available weeks for shorter run-ins.

What the planner does not tell you

Phase boundaries are planning tools — the real work is session design within each block. This planner cannot tell you:

• What specific sessions to run in each phase (that depends on your sport, event, and current fitness)
• How to manage life stress, illness, or disrupted weeks
• When to back off if accumulated fatigue runs too high

Use the calendar output as a framework, then design sessions and monitor readiness within each block with the help of your own experience or a qualified coach.