Cyclists' Dietary Health: The Art of Balancing Weight Management and Athletic Performance

Introduction

“Losing weight can improve climbing performance” — this is a widely held belief in the cycling world, and it is indeed backed by science. When climbing, for every 1 kg of weight lost, the power required to ascend the same gradient drops by approximately 0.4%. However, excessive weight loss in pursuit of climbing performance can lead riders down the dangerous path of Relative Energy Deficiency in Sport (RED-S), which at best causes performance to regress and at worst affects bone, hormonal, and heart health.

This article will help Taiwanese riders find the optimal balance between healthy body weight, training performance, and nutritional strategies.

Caloric Needs for Cyclists

Calculating Daily Energy Expenditure

Cyclists expend far more energy than the average person, especially during the build phase and long-distance training periods. Estimation method:

A 4-hour Wuling summit attempt can burn 2500–3500 kcal, equivalent to an average person’s entire daily basal metabolic rate. If you deliberately fail to refuel, your body will break down muscle protein for energy, which actually harms performance.

Energy Availability

One of the most important concepts in sports nutrition: Energy Availability = Total Daily Caloric Intake - Training Energy Expenditure, and the goal should be to maintain 45 kcal or more per kilogram of lean body mass (LBM).

If energy availability remains below 30 kcal/kg LBM for an extended period, RED-S can develop, with symptoms including:

• Declining training performance
• Frequent injuries or illness
• Irregular menstruation (in women)
• Decreased bone density
• Low mood and reduced concentration

The Scientific View of Appropriate Body Weight

Power-to-Weight Ratio (W/kg) Is the True Indicator for Climbing

For climbing performance, the key metric is FTP (Functional Threshold Power) ÷ Body Weight (kg), i.e., the power-to-weight ratio. There are two ways to improve it:

1. Increase FTP: Boost power output through proper high-intensity training
2. Reduce body weight: Decrease fat without losing muscle

For most riders, the first path (increasing FTP) is safer and more effective than the second (losing weight). Blind dieting often sacrifices muscle mass, which in turn lowers power — a losing trade-off.

Healthy Body Fat Percentage Ranges for Cyclists

When female riders drop below 16% body fat and males below 8%, the risk of hormonal imbalance, osteoporosis, and impaired immune function rises significantly.

Dietary Strategies for Healthy Fat Loss

Periodized Dietary Adjustments

Don’t diet year-round; instead, adjust caloric intake according to training load:

• High training volume days (> 3 hours of riding): Fully replenish carbohydrates, no dieting
• Low training volume days: Moderately reduce carbohydrate intake, focusing on protein and vegetables
• Rest days: Maintain appropriate caloric intake without reducing protein (to preserve muscle synthesis)

The Importance of Protein Intake

During weight loss, adequate protein intake can:

• Preserve muscle mass (prevent muscle loss)
• Increase satiety
• Boost resting metabolic rate

Recommended intake: Riders in a weight-loss phase should consume 1.6–2.0 grams per kilogram of body weight — significantly higher than the average person. Common quality protein sources in Taiwan: chicken breast, tofu, soy milk, fish, and egg whites.

Avoiding Common Dietary Pitfalls

• Using riding as an excuse to eat without limits: Many riders overestimate the calories burned while riding, leading to overcompensation
• Dieting too aggressively, causing weakness during rides: The caloric deficit on training days should not exceed 300–500 kcal
• Avoiding carbohydrates: Carbs are the primary fuel for cycling; eliminating them entirely severely damages endurance performance

Dietary Practices for Taiwanese Riders

Adjusting Everyday Eating Habits

Taiwan’s food culture is rich and diverse; here are dietary principles suited to cyclists’ needs:

• Preferred staple foods: Brown rice, sweet potatoes, oats (on training days); control portions within an appropriate range
• Protein intake: Every meal should include quality protein; avoid eating only carbohydrate-based staples
• Vegetables: 5 or more servings daily, providing micronutrients and antioxidants to support training recovery
• Taiwanese trap foods: Oil rice, braised pork rice, bubble tea — enjoy occasionally, but don’t make them a daily habit

Practical Advice

• The safest rate of weight management: no more than 0.5 kg lost per week (rapid, drastic weight loss is often accompanied by muscle loss)
• The 30 minutes before and after riding are refueling windows, not dieting windows
• Keep a food diary for 1–2 weeks periodically to understand your true caloric intake and expenditure
• If you hit a plateau in weight management, consulting a sports nutritionist is more effective than figuring it out on your own
• Taiwanese riders should pay extra attention to fluid intake; dehydration is often mistaken for hunger

Conclusion

The balance between weight management and riding performance requires scientific knowledge, self-awareness, and long-term patience. Pursuing a healthy body composition rather than the lowest number on the scale is the sustainable way to keep improving and enjoying your rides on every climbing route in Taiwan.

Related Reading

• Weight Management for Cyclists: How to Lose Weight Without Sacrificing Power
• A Healthy Weight Loss Guide for Cyclists: Scientifically Shedding Fat Without Losing Watts
• Eating Disorders in Cycling: Recognizing Warning Signs and Seeking Help
• Power-to-Weight Ratio Optimization Guide: How to Improve W/kg Without Sacrificing Health