Junior Tennis Nutrition and Healthy Growth Guide

A food-first, growth-first approach

This parent and coach handbook gives a food-first, growth-first framework for training, tournaments and everyday family life for tennis players aged 6 to 12. Adapt portions to the child's appetite, development, activity, culture, allergies and medical needs. It is educational, not an individualized prescription.

Core priorities: enough total food; carbohydrates to fuel movement; protein-containing foods across the day; calcium and vitamin D for bones; regular fluids; and enjoyable meals with healthy attitudes to food. There are no calorie targets, weight targets, supplement stacks or body-composition monitoring for children.

Evidence and scope

Tennis Canada describes family education and individually adjusted meal, snack and hydration support at its National Tennis Centre, but its full-time athletes are mainly 15 to 19, so their intake cannot be prescribed to younger children. The ITF emphasizes varied food, carbohydrate, protein, fluids and cautious supplement use; its general athlete calorie figures are not U12 prescriptions. Canadian age-based Dietary Reference Intakes provide the nutrient benchmarks used below.

The everyday eating framework

Offer three main meals and regular snacks according to hunger and the training schedule. Most meals can include a carbohydrate source (rice, potatoes, oats, bread or pasta), a protein food (eggs, fish, poultry, beans, lentils, tofu, dairy), fruit or vegetables, and an appropriate fat source. During heavy activity, extra carbohydrate-rich snacks may help. Avoid rigid portions and do not force children to finish food.

When	Food ideas (an example training day, not a prescription)
Breakfast	Oatmeal with milk or fortified soy beverage, berries and an egg; or toast, eggs and fruit
School snack	Yogurt and a banana; or hummus with crackers
Lunch	Rice or pasta, chicken, tofu or beans, vegetables and fruit
60 to 90 min before tennis	Banana, toast or crackers; adjust for comfort
During tennis	Water at regular breaks; for long play, easily digested food as needed

A flexible seven-day family menu

Swap equivalent foods to respect cultural preferences, availability, vegetarian diets and allergies, and adjust portions to appetite and activity.

Day	Breakfast	Lunch	Dinner
Monday	Oats, milk, banana	Chicken, rice, vegetables	Salmon, potatoes, greens
Tuesday	Eggs, toast, orange	Pasta, lentils, salad	Chicken, rice, vegetables
Wednesday	Yogurt, oats, berries	Bean and cheese wrap	Tofu, noodles, broccoli
Thursday	Toast, peanut butter*, fruit	Tuna or chickpea sandwich	Turkey or bean chili, rice
Friday	Egg and cheese wrap	Chicken or tofu rice bowl	Pasta, tomato, beans
Saturday	Pancakes, yogurt, fruit	Rice, eggs, vegetables	Fish, potatoes, carrots
Sunday	Oats, fruit, milk	Lentil soup, bread	Chicken or tempeh, rice, greens

*Use nut-free swaps where school or allergy rules require them. Choose lower-mercury fish and follow food safety guidance.

Before, during and after tennis

Before training: offer a familiar meal 2 to 3 hours before when practical. If hungry closer to play, use a smaller, easily tolerated carbohydrate snack. Avoid new foods just before matches.

During training: make water available and schedule frequent breaks. For ages 9 to 12, the American Academy of Pediatrics gives an approximate vigorous-exercise range of about 90 to 240 mL (3 to 8 US fl oz) every 20 minutes, varying widely with heat, sweat and body size. This is a reference range, not a drinking quota; younger children need individualized guidance. Avoid overdrinking.

After training: offer fluids and a normal meal or snack with carbohydrate and protein. Recovery matters most when another match or session follows soon; a rigid 30-minute protein deadline is unnecessary for most recreational U12 schedules.

Hot weather and long matches: add shaded breaks and cooling. For prolonged vigorous play over an hour with heavy sweating, a clinician or sports dietitian can advise whether an electrolyte drink is appropriate. Energy drinks and caffeine products are not appropriate substitutes. Stop and seek medical attention for concerning heat-illness symptoms.

Age-based nutrient reference values

These are total daily dietary reference intakes from Canadian tables, not supplement doses.

Nutrient	Ages 6 to 8	Ages 9 to 12	Food-first examples
Vitamin D	600 IU (15 mcg)	600 IU (15 mcg)	Fortified milk or soy beverage, fish, eggs
Calcium	1,000 mg	1,300 mg	Milk, yogurt, fortified soy, calcium-set tofu
Iron	10 mg	8 mg	Meat, lentils, beans, fortified cereal
Zinc	5 mg	8 mg	Meat, dairy, beans, seeds
Magnesium	130 mg	240 mg	Oats, beans, nuts and seeds

Vitamin D: Health Canada recommends a daily dietary source for ages 2 to 50. When vitamin-D-containing foods are not eaten daily, a 400 IU (10 mcg) supplement is an appropriate option; the full 600 IU does not have to come from a pill. Iron: do not give iron without a clinical assessment; too much can be harmful. Persistent fatigue, pallor, dizziness or unusual exercise intolerance call for a medical review, not automatic supplements.

Supplements: the academy policy

Food first. No routine creatine, pre-workout, caffeine or energy drinks, fat burners, bodybuilding protein powders, high-dose multivitamins or electrolyte tablets for children. Specific medically indicated nutrients may be appropriate after an individual assessment. The ITF warns about supplement contamination and anti-doping risks, and the American Academy of Pediatrics finds little evidence of benefit from performance supplements in younger athletes.

Tournament-day packing list

• A refillable water bottle
• Familiar carbohydrate-rich snacks: banana, crackers, a sandwich, dried fruit
• A balanced meal for longer gaps, in a cooler bag for perishable foods
• Allergy-safe substitutions
• Sunscreen and a hat, and a plan for scheduled water and shade breaks

Never test a new food or supplement on competition day.

When to ask a professional

See a registered dietitian or pediatric clinician for restrictive eating, vegetarian or vegan diets that need careful planning, food allergy, diabetes, gastrointestinal symptoms, recurrent injuries, delayed growth, low energy, dizziness or persistent fatigue. Coaches should never diagnose deficiencies, order tests or recommend supplement doses, and a child's weight or private health information is never discussed in public team channels.

Parent weekly check-in

• Did my child eat regular meals and have enough food to feel satisfied?
• Did we pack water and a familiar, allergy-safe snack for tennis?
• Did meals offer varied grains and starches, protein foods, fruits and vegetables and calcium-rich options?
• Did my child have a daily dietary source of vitamin D (food or an appropriate supplement)?
• Has my child rested enough and recovered comfortably between sessions?
• Are there symptoms, allergies, medications or restrictions to discuss privately with a clinician?

Scientific references

1. Tennis Canada: Nutrition at the National Tennis Centre
2. Tennis Canada: National and Regional Training Centres
3. ITF: Tennis Nutrition, Eating Right
4. ITF: Nutrition and Supplements
5. Health Canada: Dietary Reference Intakes, Vitamins
6. Health Canada: Dietary Reference Intakes, Elements
7. AAP: Choose Water for Healthy Hydration
8. ITF: Heat Guidance
9. Health Canada: Vitamin and Mineral Supplementation
10. AAP: Performance-Enhancing Sports Supplements
11. AAP: Sports Drinks and Energy Drinks for Children