Calisthenics Trainer Certification Exercise Science & Physiology for Calisthenics 1 — Questions and Answers
Question 1: Which energy system is primarily responsible for powering a maximum-effort set of 5 pull-ups lasting under 10 seconds?
- Oxidative phosphorylation
- Glycolytic system
- ATP-PCr (phosphocreatine) system (Correct answer)
- Beta-oxidation pathway
Correct answer: ATP-PCr (phosphocreatine) system
The ATP-PCr system provides immediate energy for very short, high-intensity efforts (up to 10 seconds) by breaking down stored phosphocreatine without oxygen.
Question 2: What type of muscle contraction occurs when performing the lowering phase of a pull-up?
- Concentric
- Isometric
- Eccentric (Correct answer)
- Ballistic
Correct answer: Eccentric
During the lowering (negative) phase of a pull-up, the elbow flexors and lats produce force while lengthening, which is the definition of an eccentric contraction.
Question 3: What is the primary physiological adaptation responsible for strength gains in the first 2–4 weeks of a calisthenics program for beginners?
- Significant muscle hypertrophy
- Neural adaptations and improved motor unit recruitment (Correct answer)
- Increased bone density
- Elevated resting metabolic rate
Correct answer: Neural adaptations and improved motor unit recruitment
Early strength gains are predominantly neurological — the nervous system becomes more efficient at recruiting and coordinating motor units before significant hypertrophy occurs.
Question 4: What does the term 'time under tension' (TUT) refer to in calisthenics programming?
- How long a client waits between sets
- The total duration a muscle is under load during a set, including concentric, isometric, and eccentric phases (Correct answer)
- The clock time of an entire training session
- The duration of a warm-up period
Correct answer: The total duration a muscle is under load during a set, including concentric, isometric, and eccentric phases
TUT measures total muscle loading time per set across all phases of movement, which is a key variable for stimulating hypertrophy and endurance adaptations.
Question 5: Which principle explains why a client who can do 20 push-ups may still struggle with a single-arm push-up?
- Muscle hypertrophy principle
- Principle of specificity — different lever arms and stability demands require different strength (Correct answer)
- FITT principle
- Principle of reversibility
Correct answer: Principle of specificity — different lever arms and stability demands require different strength
The specificity principle states that adaptations are specific to the demands imposed; a two-arm push-up and one-arm push-up create entirely different biomechanical and neuromuscular demands.
Question 6: What is the primary role of the serratus anterior muscle during a push-up?
- Hip extension
- Scapular protraction and upward rotation to stabilize the shoulder blade (Correct answer)
- Wrist flexion
- Elbow extension
Correct answer: Scapular protraction and upward rotation to stabilize the shoulder blade
The serratus anterior protracts and upwardly rotates the scapula during pushing movements, keeping the shoulder blade stable and preventing winging under load.
Calisthenics Trainer Certification Exercise Science & Physiology for Calisthenics 1
Which energy system is primarily responsible for powering a maximum-effort set of 5 pull-ups lasting under 10 seconds?