Related Experiment Video
Updated: Jul 9, 2025

Determining the Contribution of the Energy Systems During Exercise
Published on: March 20, 2012
Differences in Knowledge of Female Athlete Triad and Relative Energy Deficiency in Sport in Female Cross-Country
Melissa T Lodge1, Kathryn E Ackerman2, Jessica Garay3
1University of Rhode Island, Kingston.
Background:
The female athlete triad (Triad) and relative energy deficiency in sport (REDs) describe potential health and performance consequences of low energy availability.
Objective:
We surveyed female cross-country athletes to assess differences in educational impact scores (EIS; knowledge score × confidence score factor) of Triad and REDs. Associations between EIS and participant characteristics (eg, mileage [current and peak], years of running experience, age, bone stress injury history, division level participation, academic area of study, Triad or REDs diagnoses, and Triad or REDs education) were explored.
Main Outcome Measure(S):
An evidence-based online survey was developed and administered via Qualtrics to female collegiate cross-country athletes (n = 275; age = 20 ± 1 years).
Results:
A weak correlation existed between peak career mileage and EIS (r = 0.195; P = .010). Educational impact scores significantly differed in athletes with a related academic area of study versus those without (21.91 ± 5.16 and 16.11 ± 5.54, respectively). Educational impact scores significantly differed in athletes with Triad and REDs diagnoses (21.69 ± 5.85 and 22.58 ± 6.82, respectively) versus those without (16.80 ± 6.54 and 17.20 ± 6.34, respectively). Educational impact scores were higher in those who had received Triad education versus those who had not (21.03 ± 6.86 and 18.12 ± 6.82, respectively). A significant interaction between peak career mileage and Triad diagnosis was found (P = .005).
Conclusions:
Significant education-based and diagnosis differences suggest that Triad diagnoses correlate with peak career mileage. These findings support the facilitation of education to improve not only the treatment but also the prevention of Triad and REDs.
Related Concept Videos
Anorexia Nervosa
Symptoms and Physical Effects
Individuals with anorexia nervosa commonly exhibit extreme...
Muscle Recovery and Fatigue
Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...

