Nutrition for Lacrosse Players

What a Lacrosse Game Actually Demands

Lacrosse is a stop-and-go sport: repeated 10-40 second sprints, hard changes of direction, and a 60-minute game clock played in shifts of 30-90 seconds. The phosphocreatine system powers explosive dodges and shots, while the aerobic system handles recovery between shifts, so both are working the entire game.

The 2011 Compendium of Physical Activities lists lacrosse at about 8 METs, and competitive play with continuous running can push effective intensity higher, toward the top of the 8-10 MET range. For a 70 kg (154 lb) player, that works out to about 560-700 kcal per hour of play using the standard MET calculation, so a full game plus warm-up typically costs roughly 700-1,000 kcal.

Carbohydrate, not fat, is the dominant fuel at that intensity. Muscle glycogen powers repeated sprints, and a 60-90 minute game can draw it down noticeably, especially on the second day of a back-to-back.

Daily Targets for Carbohydrate, Protein, and Fat

The ACSM, Academy of Nutrition and Dietetics, and Dietitians of Canada joint position stand recommends 5-7 g of carbohydrate per kg of body weight per day for athletes training about an hour a day, rising to 6-10 g/kg when daily training runs 1-3 hours, such as two-a-days, and 8-12 g/kg during extreme loads of 4-5 hours per day (Thomas et al., 2016).

• Typical practice day, 70 kg (154 lb) player: 350-490 g carbohydrate
• Two-a-days or tournament weekend, 70 kg player: 420-700 g carbohydrate
• Protein: 1.4-2.0 g/kg per day, or 98-140 g, split into 3-4 feedings of 20-40 g (Jäger et al., 2017)
• Fat: 20-35% of total calories to support hormone production and vitamin absorption (Dietary Guidelines for Americans, USDA/HHS)

These are daily goals, not a single meal. Under-fueling on ordinary practice days is the most common reason players fade late in the fourth quarter.

Whole Foods That Fit a Lacrosse Plate

Portions below are cooked as noted and rounded from USDA FoodData Central values.

• Oats: 1 cup cooked (234 g) — about 27 g carbohydrate, easy on the stomach before a morning practice
• Banana: 1 medium (118 g) — about 27 g carbohydrate and 400 mg potassium
• Plain Greek yogurt, 2%: 6 oz (170 g) — about 17-20 g protein, depending on brand and fat level
• Eggs: 2 large (100 g) — about 12 g protein and 10 g fat
• Chicken breast: 3.5 oz cooked (100 g) — about 31 g protein
• Salmon: 3.5 oz cooked (100 g) — protein plus omega-3 fats
• Brown rice: 1 cup cooked (195 g) — about 45 g carbohydrate
• Sweet potato: 1 cup cubed (133 g) — carbohydrate, potassium, and vitamin A
• Lentils: 1 cup cooked (198 g) — about 16 g protein and 15 g fiber
• Almonds: 1 oz (28 g) — about 14 g fat, a calorie-dense tournament snack
• Orange: 1 medium (140 g) — carbohydrate and fluid, an easy halftime choice

For item-level nutrient detail, see banana nutrition and oatmeal nutrition.

Fueling Timeline for Practice and Game Day

Portions above suit a 70 kg (154 lb) player. Scale them up or down by body size, and rehearse the plan on practice days rather than debuting it in a game.

Hydration and Electrolytes

ACSM recommends about 5-7 mL of fluid per kg of body weight at least 4 hours before exercise, which is roughly 12-17 oz for a 70 kg player (Sawka et al., 2007). Add another 8-16 oz 10-15 minutes before play if urine is dark.

Sweat rates during lacrosse range from about 0.5-2.0 L per hour (17-68 oz per hour). Aim to keep body-mass loss under 2%, which is under 1.4 kg (3 lb) for a 70 kg player. For sessions longer than 60-90 minutes, choose fluids that supply sodium in the ACSM range of about 0.5-0.7 g per L — roughly 110-165 mg per 8 oz (240 mL) — rather than plain water alone.

Measure your own sweat rate rather than guessing. Weigh yourself before and after a one-hour practice, add the fluid you drank, and replace 16-24 oz for every pound (450 g) of body weight lost. The hydration calculator can run the math for you.

Supplements: What the Evidence Supports

Creatine monohydrate has strong support for repeated high-intensity efforts at 3-5 g per day (Kreider et al., 2017). A loading phase of 20 g per day split into four doses for 5-7 days saturates muscles faster, but 3-5 g per day reaches the same place over a few weeks.

Caffeine at 3-6 mg per kg body weight, taken 30-60 minutes before competition, is an established performance aid (Guest et al., 2021). For a 70 kg player that is 210-420 mg. Test it in practice first and check your league's eligibility rules.

Iron and vitamin D are sometimes low in athletes, but supplement only after bloodwork and medical guidance. NIH ODS notes that high-dose iron without a confirmed deficiency is not helpful and can be harmful. A registered dietitian or team physician is the right person to interpret results. For protein targets in practice, see the protein calculator.

Bottom line: Build game day around 5-7 g of carbohydrate per kg, 1.4-2.0 g of protein per kg, and a tested hydration plan, then repeat it until it feels automatic.