Contributed by Nicholas E. Blonien, D.O.
As tactical athletes, firefighters require premium fuel for optimal performance. Their shifts bring a range of physiological stressors, from sleep disruption and intense bursts of physical activity to prolonged time on scene in full turnout gear, temperature extremes, and even periods of downtime. This variability makes proper nutrition challenging, and inconsistent health information adds to the difficulties. While it’s easy to get lost in the details, fueling right shouldn’t be complicated. Below are evidence-based principles of tactical athlete nutrition to help design a personalized, high-performance meal plan for firefighters.
1. Athletes need carbohydrates, but timing matters
Carbohydrates are the best fuel for moderate and high intensity physical activity and can be divided into two categories – simple and complex:
- Simple carbs provide quick energy as they are rapidly metabolized to glucose, causing a blood sugar “spike.”
- Complex carbs deliver more sustained energy due to their slow digestion, causing a “slow burn” elevation in blood sugar.
Muscles use glucose for energy, storing it as glycogen to support ongoing exercise. However, eating simple carbs or a large amount of complex carbs at the wrong time can negatively impact health. If you eat more carbs than your body needs for your activity level, the extra get stored as fat and your body may struggle to control blood sugar, increasing the risk of diabetes.
Tips for fueling:
- Simple carbs should be consumed before physical activity to provide immediate energy.
- Complex carbs can be eaten throughout the day but should be moderated, especially during periods of low activity.
2. Eat between 100-200 grams of protein per day for muscle support
Building a strong physique requires plenty of protein, which is the body’s nutritional building blocks. The FDA’s Recommended Daily Allowance (RDA) for protein is 0.36 grams per pound of body weight, which is the minimum to prevent malnutrition. However, as a tactical athlete, the goal is to thrive, not merely survive, requiring significantly more support for the body in this physically demanding profession.
Tips for fueling:
- Space out your protein intake throughout the day to keep your body in build-and-repair mode, aiming for at least 30 grams each meal.
- Each protein-rich meal should include 3 grams of leucine, a key amino acid for muscle building and repair. It can be found in meat, dairy and legumes.
3. Saturated fat intake and cardiovascular disease
Saturated fat is a primary contributor to increased levels of “bad cholesterol” (LDL) in the blood, which significantly increases the risk of cardiovascular disease – a leading cause of death among firefighters. Saturated fat is commonly found in fatty animal-derived foods, which also offer protein and other nutrients, meaning it’s not necessary to eliminate these foods entirely.
Tips for fueling:
- Select low-fat and minimally processed animal-derived foods when consuming them.
- Incorporate plant-based foods that can provide respectable amounts of protein.
- To highlight the importance of limiting saturated fat, a low-fat, plant-based diet is the only nutrition plan shown to facilitate the reversal of coronary artery disease.
4. Sufficient dietary fiber: a critical component of a healthy nutrition plan
Dietary fiber is non-digestible plant material that plays an essential role in maintaining health. While it may seem insignificant, sufficient fiber intake offers numerous benefits, including improved glucose regulation, better cholesterol levels, a healthy gut microbiome, and regular bowel movements. Strong evidence links fiber intake to chronic disease prevention. Good sources of fiber include fruits, vegetables, nuts, seeds, legumes and complex carbohydrates.
Tips for fueling:
- Adults should aim for a minimum of 30 grams of fiber daily, or about 14 grams per 1,000 calories consumed.
- While there isn’t a defined upper limit for fiber intake, consuming more than 50 grams per day may result in gut discomfort and could possibly impair nutrient absorption.
5. Avoid fad diets like the carnivore and ketogenic diets
While restrictive diets can offer short-term weight loss, as they limit intake of major food groups they are likely to result in nutrient deficiencies in the long run unless you rely heavily on supplements, which may not be the healthiest or cheapest choice.
Examples of diets:
- The Carnivore Diet consists solely of eating animal-derived foods, resulting in low fiber intake and high saturated fat consumption – both clear contributors to chronic disease.
- The Ketogenic Diet minimizes carbohydrate intake, leading to low fiber consumption and increased reliance on animal-derived foods. This diet may also hinder muscle glycogen replenishment, negatively impacting physical performance.
- A vegan or vegetarian diet can make it difficult to get enough protein due to the absence of meat and dairy. Careful planning and taking plant-based protein supplements can help meet protein needs.
6. Create your ideal daily diet
A diet primarily composed of plants, along with controlled amounts of animal-derived foods, is the key for health and sustainability. Consider the Mediterranean Diet, which has demonstrated health benefits for firefighters. Achieving proper nutrition requires an understanding of your daily intake for both macronutrients (carbs, protein, fats) and micronutrients (vitamins, minerals). However, scrutinizing every food label and tallying numbers throughout the day can be disruptive, potentially leading to obsession and anxiety.
Instead, spend some time designing your “ideal daily diet,” incorporating a variety of healthy foods you enjoy. Use a food tracking app or website to assess the nutritional value of your meals and adjust as needed to meet recommended guidelines. Aim to stick to this diet most days of the week, and rest easy that occasional deviations are beneficial for variety and less harmful to your health when a solid foundation is in place.
Firefighters can also learn more about nutrition and how it can help them perform more safely and efficiently while on duty, as well as at home, by scheduling a MnFIRE training on Fitness & Nutrition for your department. Learn more here.
