Periodization of Power Training: Intensity Distribution Ratios from Base Phase to Pre-Race

Introduction

“Why do I train hard all year round, yet my races don’t improve?” This is a common frustration among self-coached amateur cyclists. The problem often isn’t the effort level, but a lack of Periodization. Periodized training means systematically dividing the year’s training into distinct phases based on target race dates, with clear intensity ratios, training focus, and recovery plans for each phase. Training without periodization is like a movie without a script—no matter how hard the actors try, it’s difficult to deliver a compelling, climactic ending.

The Basic Framework of Periodized Training

Traditional Linear Periodization vs. Nonlinear Periodization

For most Taiwanese amateur cyclists (1–3 major goals per year), traditional linear periodization is the easiest starting point.

Detailed Intensity Distribution for Each Training Phase

Phase 1: Transition Period

Duration: 2–4 weeks (after the main race)

This is a time when both body and mind truly need rest.

• Intensity distribution: Complete rest or very easy aerobic activity (Z1–Z2, no more than 60 minutes)
• Power targets: No restrictions whatsoever; focus entirely on enjoyment and recovery
• Other activities: Trying other sports is encouraged (swimming, light running, hiking) to maintain the exercise habit while changing things up
• Psychological function: Recharge training motivation and avoid year-round training burnout

Phase 2: Base Period

Duration: 8–16 weeks (typically autumn/winter in Taiwan)

The base period is the most underrated yet most important phase of the entire annual training plan for amateur cyclists.

Intensity Distribution Targets:

Main Training Content:

• Long Z2 rides (at least one 3+ hour session per week)
• 1–2 sweet spot sessions per week (single-session duration gradually increasing from 12 to 30 minutes)
• Big-gear muscular endurance training (once per week)
• Technical training: cadence drills (alternating high cadence → low cadence), climbing technique

Common Base Period Mistakes:

• Adding too much high-intensity training too early
• Z2 training intensity too high (it feels too easy, so riders unconsciously push harder)
• Skipping the base period and jumping straight into the build period (“I just raced last week, I’m fit enough”)

Phase 3: Build Period

Duration: 6–10 weeks

The build period is the “chemical reaction phase” of fitness quality—building on the aerobic foundation established in the base period, gradually adding more high-intensity stimuli to trigger higher-level physiological adaptations.

Intensity Distribution Targets:

Main Training Content:

• Maintain the weekly long ride, but gradually incorporate SST segments into it
• 1 HIIT session per week (4×4 or 30/15 alternations)
• 1 threshold interval session per week (3×10 minutes or 2×20 minutes)
• Race simulation rides (incorporating climbing sprints, hard accelerations, and other race scenarios into training groups)

Phase 4: Peak/Taper Period

Duration: 2–4 weeks

The core task of the taper period is to dissipate the fatigue accumulated during the build period while maintaining or even enhancing neuromuscular system activation.

The Taper Paradox:

Many cyclists fear reducing training volume before a race, worried about “losing fitness.” Research shows that training volume can be reduced by 30–50%, but as long as sufficient training intensity is maintained, FTP and VO2max will not significantly decline within 2–3 weeks, while the elimination of fatigue brings out true performance.

Sample Taper Week Plan (target race on Sunday):

Periodization Challenges for Taiwanese Cyclists

The Impact of Climate on the Training Season

Taiwan’s climate has a unique influence on periodized training:

• Summer (June–September): High heat and humidity make outdoor high-intensity training inefficient, with elevated heart rates; suitable for shifting to indoor trainers to maintain the aerobic base
• Autumn/Winter (October–March): Taiwan’s mountain climate is cool, making this the golden window for base-period long rides
• Spring (March–May): Taiwan’s main race season (Tour de Taiwan-related events, Wuling Challenge, etc.), the timing for peak fitness

Suggested Taiwan-Specific Periodization Framework (targeting May Wuling):

Practical Advice

• Set your target race date first, then plan each period backward from there
• Don’t slack off during the base period: The investment made in this phase determines the ceiling of training quality in later phases
• Add intensity progressively during the build period: Add only one new type of high-intensity stimulus per week; don’t add HIIT + threshold + neuromuscular work all at once
• Flexible adjustment is necessary: Illness, work stress, and family matters can all disrupt the plan; allow yourself to adjust flexibly, but keep the overall direction of the periodization intact
• Record feelings, not just numbers: Log weekly sleep quality, motivation levels, and physical sensations in your training diary—these subjective indicators are important feedback for executing periodization

Conclusion

The essence of periodized training is “trading time for fitness”—giving the right stimulus at the right time so the body reaches its optimal state for the target race. This is not a luxury reserved only for professional athletes, but a fundamental skill any cyclist with goals should master. Understanding the patience of the base period, the effort of the build period, and the letting-go of the taper period—and applying them flexibly within a framework suited to Taiwan’s climate—is the key step in advancing from “training hard” to “training smart.”

Related Reading

• Seasonal Cycles in Power Training: An Annual Plan from Winter Base → Spring Intensity → Summer Racing Season
• Power Training Periodization: Scientific Workout Design for Base, Build, and Race Phases
• Periodized Training for Sprinters: Seasonal Allocation of Speed and Endurance
• Cycling Training Periodization Plans: Scheduling from Base to Peak