ANATOMY REVIEW,TRIPLE EXTENSION, MUSCLE VS MOVEMENTS

Anatomy Review

  • Importance of foundational knowledge in anatomy for athletic performance.

    • Understanding anatomy helps grasp complex movements and prevent injuries.

    • Focus on basic concepts rather than memorizing numerous muscles or bones.

Types of Muscle Fibers

  • Over 600 skeletal muscles in the body.

  • Muscle Fiber Types:

    • Type I (Slow-twitch):

      • Better suited for endurance activities (e.g., marathons).

      • More prevalent in long-distance runners like Kenyans.

    • Type II (Fast-twitch):

      • Subdivided into Type II A and Type II X fibers.

      • Type II A: Moderate force and endurance.

      • Type II X: High force producers that fatigue quickly, ideal for sprinting (e.g., Jamaican sprinters).

    • Adaptability of muscle fibers: Training can influence muscle fiber characteristics.

Muscle Contractions

  • Understanding how muscles work with movement:

    • Types of Muscle Contractions:

      • Concentric: Muscle shortens as it contracts.

      • Eccentric: Muscle lengthens while resisting a force, considered the strongest form.

      • Isometric: Muscle stays the same length under tension.

  • Example of push-up progressions:

    • When concentric contraction fails, use other contraction types for continued training.

Muscle Structure

  • Layers of muscle structure (from the outside in):

    • Muscle > Bundle > Fascicle > Muscle Fiber > Myofibril > Sarcomere

  • Sarcomere: Basic unit of muscle contraction, where actin and myosin interact.

  • Sarcoplasmic Reticulum: Involved in nutrient delivery and fluid processing within muscles.

  • Importance of Mitochondria: More present in slow-twitch fibers, essential for endurance training adaptations.

Core Musculature

  • Major core muscles:

    • Rectus Abdominis: Not the most functional but aesthetically significant; a stabilizer.

  • Training should focus on various core muscles beyond just abs.

Nervous System Overview

  • Divisions:

    • Central Nervous System: Brain and spinal cord.

    • Autonomic Nervous System: Controls involuntary functions, impacted by stress and training.

  • Importance of training the body intelligently to maintain balance in the autonomic system to avoid negative health effects.

Vascular System Essentials

  • Blood Circulation:

    • Arteries: Carry blood away from the heart.

    • Capillaries: Site of nutrient and waste exchange.

    • Veins: Return blood to the heart.

Skeletal System Insights

  • Important bones to identify:

    • Humerus, pelvis, clavicle, scapula (17 muscles attach).

  • Knowledge of Pelvis and Spine:

    • Pelvis should maintain a neutral position to avoid issues.

    • The lumbar spine is critical for athletes; lower back injuries are prevalent.

  • Spine Sections: Cervical (7), Thoracic (12), Lumbar (5).

Triple Extension Concept

  • What is Triple Extension?

    • Involves extension of hip, knee, and ankle, important in many athletic movements.

    • Critical for activities like sprinting, jumping, and weightlifting.

Muscles Versus Movements

  • Understanding the balance between muscle isolation and movement training.

    • Different sports require different focus (e.g., basketball vs. bodybuilding).

    • Coaches should select exercises that align with athletes' performance goals while considering muscle engagement.

  • Train movements that translate to sports without over-complicating exercises.