Glossary / Glossary
Fitness, biomechanics, MIDA, nutrition and AI terms explained.
Actin
AnatomyThin filament protein in muscle
Actin — thin filament protein in sarcomere. Together with myosin enables muscle contraction.
Brachioradialis
AnatomyBrachioradialis
Flexes the elbow from a neutral (half) wrist position.
EN: Brachioradialis
Fascicle
AnatomyBundle of muscle fibers
Fascicle — bundle of muscle fibers. Fascicle length determines ROM and contraction velocity.
Femur
AnatomyFemur — the thigh bone
The long load-bearing thigh bone; anchor for quads, hamstrings, glutes.
EN: Femur
Kor
AnatomyCore musculature
Trunk stabilizers: rectus, obliques, transversus, erectors, diaphragm.
EN: Core
Latissimus Dorsi
AnatomyLatissimus Dorsi — wide back muscle
Wide back muscle — the largest muscle by volume: adducts and flexes the shoulder.
EN: Latissimus Dorsi
Muscle Fiber Type I
AnatomySlow-Twitch Fibers
Slow-twitch muscle fibres — endurance-oriented, oxidative.
EN: Muscle Fiber Type I
Muscle Fiber Type IIa
AnatomyFast-Twitch Oxidative-Glycolytic
Fast oxidative-glycolytic fibres — strength + endurance.
EN: Muscle Fiber Type IIa
Muscle Fiber Type IIx
AnatomyFast-Twitch Glycolytic
Very fast glycolytic fibres — maximal force, fast fatigue.
EN: Muscle Fiber Type IIx
Myosin
AnatomyThick filament protein in muscle
Myosin — thick filament protein in sarcomere. Myosin heads pull actin during contraction.
Pelvis
AnatomyPelvis — the pelvic ring
Bony ring (sacrum, ilia, pubes) — the spine's base and the leg's anchor.
EN: Pelvis
Rotator Cuff
AnatomyRotator Cuff — supraspinatus, infraspinatus, teres minor, subscapularis
Four small muscles stabilizing the humeral head within the glenoid.
EN: Rotator Cuff — ротирующая манжета плеча