ACE Exercise Science & Application 3 — Questions and Answers
Question 1: The SAID principle in exercise programming refers to:
- Specific Adaptations to Imposed Demands (Correct answer)
- Sequential Adaptation through Incremental Difficulty
- Systematic Application of Intensity and Duration
- Safe Advancement in Integrated Design
Correct answer: Specific Adaptations to Imposed Demands
SAID stands for Specific Adaptations to Imposed Demands, meaning the body adapts specifically to the type of stress placed upon it.
Question 2: During the stretch-shortening cycle, the amortization phase refers to:
- The eccentric loading phase before the jump
- The brief transition between eccentric and concentric phases (Correct answer)
- The concentric push-off phase
- The landing and deceleration phase after the jump
Correct answer: The brief transition between eccentric and concentric phases
The amortization phase is the brief isometric coupling period between the eccentric (pre-stretch) and concentric (propulsion) phases.
Question 3: Which statement about motor unit recruitment is MOST accurate?
- Large motor units are recruited before small motor units at low force levels
- Motor units are recruited in an all-or-none fashion according to the size principle (Correct answer)
- A single motor neuron innervates only one muscle fiber
- Fast-twitch motor units have lower activation thresholds than slow-twitch units
Correct answer: Motor units are recruited in an all-or-none fashion according to the size principle
The size principle states that motor units are recruited from smallest (slow-twitch) to largest (fast-twitch) as force demand increases, and each fires in an all-or-none manner.
Question 4: A personal trainer is assessing a client's VO2max using a submaximal cycle ergometer test. The predicted VO2max relies on the assumption that:
- Heart rate and oxygen consumption have a nonlinear relationship at high intensities
- Heart rate response to submaximal work is consistent and predictable (Correct answer)
- Maximal heart rate is always 200 bpm regardless of age
- Lactate threshold occurs at 90% of VO2max in all individuals
Correct answer: Heart rate response to submaximal work is consistent and predictable
Submaximal VO2max tests assume a linear relationship between heart rate and oxygen consumption and that submaximal HR responses are predictable and consistent.
Question 5: Excess post-exercise oxygen consumption (EPOC) is PRIMARILY caused by:
- Increased skeletal muscle protein synthesis only
- Elevated metabolic rate needed to restore homeostasis after exercise (Correct answer)
- Decreased cardiac output during recovery
- Reduced ventilation rate after exercise
Correct answer: Elevated metabolic rate needed to restore homeostasis after exercise
EPOC reflects the elevated oxygen uptake needed to restore phosphocreatine, clear lactate, reduce body temperature, and return the body to its pre-exercise state.
Question 6: Which of the following BEST describes the concept of progressive overload?
- Decreasing resistance after each set to prevent injury
- Gradually increasing training stimulus over time to drive adaptation (Correct answer)
- Performing the same workout consistently to build a habit
- Alternating muscle groups each session to allow full recovery
Correct answer: Gradually increasing training stimulus over time to drive adaptation
Progressive overload means systematically increasing the training stress (volume, intensity, or frequency) over time to continually stimulate adaptation.
Question 7: The primary role of the Golgi tendon organ (GTO) during heavy resistance exercise is to:
- Detect changes in muscle length and trigger a stretch reflex
- Sense excessive tension and inhibit the contracting muscle to prevent injury (Correct answer)
- Enhance joint proprioception during rapid movements
- Stimulate agonist muscle recruitment through reciprocal inhibition
Correct answer: Sense excessive tension and inhibit the contracting muscle to prevent injury
The GTO monitors tendon tension and triggers autogenic inhibition — relaxing the muscle when tension becomes dangerously high.
ACE Exercise Science & Application 3
The SAID principle in exercise programming refers to: