Expert Links Metabolic Health to Performance
In a recent interview, biomedical scientist Dr. Rhonda Patrick discussed how metabolic health impacts long-term resilience and recovery from high-stress events. Her insights on managing inflammation and adapting to cellular stress through nutrition and exercise are directly applicable to the physical demands of firefighting and PSSA1 training. She recommends diets rich in omega-3s and regular aerobic activity to modulate inflammatory markers.
- Sudden cardiac events are the leading cause of on-duty fatalities for firefighters, and poor metabolic health is a significant contributing factor, increasing the risks of heart disease, stroke, and diabetes. - The Candidate Physical Ability Test (CPAT), a standard for many fire departments, intensely challenges both aerobic and anaerobic energy systems. Successful completion requires high levels of cardiovascular fitness to manage the sustained physical exertion over the course of the test. - Research on 9/11 first responders shows that developing metabolic syndrome, even years after a major event, significantly increases the risk for lung injury. However, modest weight loss can decrease this risk by as much as 20 percent. - The American Heart Association suggests eating two 3.5-ounce servings of fatty fish weekly to get the benefits of omega-3s, which can lower blood pressure and heart rate. For firefighters who may not get enough through diet, a 1,000 mg supplement of combined EPA and DHA is an alternative. - Dr. Patrick highlights that chronic, low-grade inflammation, which can be worsened by factors like high sugar intake, is a key driver of aging and many chronic diseases. In one study, healthy young men who drank a 20-ounce sugar-sweetened beverage daily for three weeks saw a 60% to 100% increase in C-reactive protein, a primary marker for inflammation. - Regular aerobic exercise creates a positive stress response in the body that activates anti-inflammatory genes. For optimal cardiovascular health, firefighters are often advised to engage in 40 to 60 minutes of aerobic exercise at least four times a week. - The physical demands of firefighting often lead to sleep deprivation, which can increase levels of the stress hormone cortisol. Chronically high cortisol is linked to muscle and brain atrophy. - The National Fire Protection Association (NFPA) has standards that may disqualify a candidate with metabolic syndrome due to the increased risk of a sudden cardiac event, which poses a danger to the individual, their team, and the public.
