Coaches, this one is for you. Roughly 1 in 12 Black or African American athletes in the United States carries sickle cell trait (SCT) — and many of them don't know it. The first thing I want every coach to hear is the most important: SCT does not keep anyone off the field. Athletes with sickle cell trait play youth football, varsity basketball, college track, and the Olympic Games. What changes is not their right to compete — it is the level of awareness on the sideline.
Here is the science in plain language. Sickle cell trait means a person carries one copy of the sickle hemoglobin gene. Under most conditions, their red blood cells behave normally. But under extreme heat, severe dehydration, sudden spikes in intensity, or rapid altitude change, those cells can briefly change shape and slow blood flow to working muscles. The result is a rare but real condition called exertional sickling, which can look like a heat cramp at first and escalate quickly.
So what's a coach's job? Build a program that protects every athlete and have a plan when something goes wrong.
Build it in:
- Start every preseason gradually. Resist the urge to "test toughness" with timed sprints in week one.
- Schedule water breaks like you schedule plays. Make hydration the default, not the reward.
- Adjust for heat, humidity, and altitude. Acclimate over 7–14 days.
- Cut high-caffeine pre-workouts. They mask fatigue and accelerate dehydration.
- Have a written Emergency Action Plan — and rehearse it once a year.
Spot the warning signs: Muscle burning or weakness, cramping, rapid breathing without wheezing, feeling overheated, prolonged fatigue. An athlete experiencing exertional sickling can usually still talk — that's what makes it different from a sudden cardiac event. Pull them out, cool them down, hydrate, and get medical eyes on them.
Never use exercise as punishment for an athlete in physical distress. Never push through "for toughness." And if an athlete has shared their SCT status with you, treat that information like the medical record it is — confidential, protected, and respected.
Coaches save lives every season just by paying attention. Let's keep doing that.
— Dr. Rob
📄 Resource: Download the CDC's Coaches: Don't Let Your Athletes Get Sidelined by Sickle Cell Trait fact sheet for your training binder.