Menstrual Cycle Training Adjustments for Female Cyclists: A 4-Phase Power Training Plan Guide

Why Train According to Your Cycle

The menstrual cycle in female athletes (averaging 28 days) causes significant fluctuations in estrogen, progesterone, body temperature, blood iron levels, and carbohydrate metabolism. Ignoring these changes can lead to:

• High-intensity workouts landing at the “worst possible time”
• Race days coinciding with “energy lows”
• Training fatigue accumulating without understanding the cause of poor recovery

Physiological Characteristics of the 4 Phases

Phase 1: Menstruation (Day 1-5)

• Estrogen: Low
• Progesterone: Low
• Body temperature: Low baseline (36.3-36.6°C)
• Characteristics: Possible abdominal cramps, fatigue, anemic feeling

Phase 2: Follicular Phase (Day 6-14)

• Estrogen: Rising to peak
• Progesterone: Low
• Body temperature: Still low
• Characteristics: High energy, high strength and power

Phase 3: Ovulation (Day 14-16)

• Estrogen: Dramatic fluctuation, sharp drop from peak
• Progesterone: Begins to rise
• Characteristics: May feel slightly fatigued, increased injury risk

Phase 4: Luteal Phase (Day 17-28)

• Estrogen: Moderate
• Progesterone: Peak
• Body temperature: Elevated by 0.3-0.5°C
• Characteristics: Water retention, easy fatigue, poor carbohydrate metabolism, low mood

4-Phase Training Configuration

Menstruation (Day 1-5): Low-Intensity Recovery

• Suitable: Zone 1-2 easy rides, technique drills, stretching/yoga
• Avoid: FTP tests, VO2max workouts
• Calories: May slightly reduce (basal metabolic rate slightly lower)
• Iron supplementation: Menstrual blood loss can reach 30-80 ml; consume iron-rich foods (red meat, spinach, liver)

Follicular Phase (Day 6-14): The Golden Window for High Intensity

High estrogen + low body temperature + recovered strength — this is the period in the training cycle when you “should push the hardest.”

Recommended workouts:

• VO2max: 5 × 5 minutes @ 110-115% FTP, 3 minutes recovery
• Strength training: Squats, deadlifts, single-leg squats, increase load by 5-10%
• Long endurance: 3-4 hour tempo-paced rides

Why it works:

• Estrogen promotes protein synthesis, making strength gains more efficient
• High pain tolerance (estrogen raises the pain threshold)
• Faster recovery

Ovulation (Day 14-16): Caution Phase

Sharp estrogen drop + ligament laxity + 4-8x higher risk of ACL tears.

• Avoid: Sudden accelerations, plyometric training, new movement techniques
• Can do: Steady tempo (75-85% FTP), technique refinement
• Note: Postpone downhill technique practice

Luteal Phase (Day 17-28): Endurance and Fat Burning

High progesterone + elevated body temperature + decreased carbohydrate utilization + increased fat utilization.

Recommended workouts:

• Long endurance: 3-5 hours Zone 2 (optimal fat oxidation efficiency)
• Avoid: FTP tests, time-trial intensity (poor carbohydrate metabolism can drop speed by 3-5%)
• Heat management: Body temperature is 0.5°C higher; in summer training, need an extra 200-300 ml/hour of fluids
• Nutrition: Can consume 10-15g more carbs/hour than usual (carbohydrate metabolism is less efficient, requiring higher total intake)
• Mood: Prone to low mood; reduce intensity but maintain consistency

Aligning Race Day with Your Cycle

Ideal scenario: Schedule A-priority races (annual goal events) in the late follicular phase (Day 11-14).

Practical approaches:

• Race day falls during menstruation → use birth control pills to delay it 1 month in advance (consult a physician)
• Race day falls during the luteal phase → accept performance may be 3-5% lower; do carbohydrate periodization training in the 14 days prior

Personalized Tracking

Recommended apps for tracking:

• Strava + cycle tracking apps (e.g., FitrWoman, Wild.AI)
• Daily logging: body temperature, weight, HRV, subjective fatigue, rating of perceived exertion
• After 3 cycles, you can identify your personal patterns

Important Considerations

Women Taking Birth Control Pills

Oral contraceptive pills (OCP) flatten the cycle, reducing the differences in periodized training. Advantages: high training predictability; Disadvantages: losing the advantage of the follicular phase golden window.

Warning Signs of Menstrual Irregularities

Irregularities lasting more than 3 consecutive months may indicate RED-S (Relative Energy Deficiency in Sport):

• Insufficient caloric intake
• Body fat percentage too low (< 15%)
• Training volume too high
• Medical evaluation required

Conclusion

A woman’s biological cycle is not an “obstacle” but “information.” Learning to interpret and adjust your training plan allows you to achieve better adaptations, lower injury rates, and more consistent race performance with the same training volume.

Related Reading

• Physiological Differences in Female Cyclists: The Impact of the Menstrual Cycle on Training Performance
• Training Differences in Female Cyclists: How Hormonal Cycles Affect Athletic Performance
• Special Health Considerations for Female Cyclists: Hormones, Bone Health, and Equipment
• Periodized Training for Female Cyclists: The Relationship Between Hormones and Performance