International Sports Sciences Association (ISSA) Trainer Practice Exam

What principle states that in order for gains to continue, the intensity of the stress imposed must be progressively increased?

1. SAID principle

2. GAS principle

3. Overload principle

4. FITT principle

The correct answer is: Overload principle

The Overload principle is fundamental in exercise science and training. It asserts that in order for an individual to make continued improvements in strength, endurance, or overall fitness levels, the intensity of the exercise must be systematically increased. This can involve lifting heavier weights, increasing resistance, extending duration, or enhancing the complexity of exercises. As individuals adapt to a certain level of stress from their workouts, this principle highlights the necessity to "overload" the body progressively to stimulate further adaptations. If the stress placed on the body remains constant, the likelihood of hitting a plateau in performance and strength gains increases, as the body becomes accustomed to the routine without being challenged further. Understanding this principle is essential for creating effective training regimens that facilitate continuous improvement while minimizing the risk of plateaus or stagnation in performance. While the other principles like the SAID principle (Specific Adaptations to Imposed Demands), GAS principle (General Adaptation Syndrome), and FITT principle (Frequency, Intensity, Time, Type) describe different aspects of training adaptation and prescription, the Overload principle specifically addresses the need for increased intensity to foster ongoing progress.