HPHY 103 Lecture Notes - Lecture 3: Gastrocnemius Muscle, Semimembranosus Muscle, Latissimus Dorsi Muscle

• School: University of Oregon
• Department: Human Physiology
• Course: HPHY 103
• Professor: Pat Lombardi

Document Summary

Breathe continuously! exhale during concentric phase; controlling weight against gravity"s pull inhale during eccentric phase; motion of active muscle while lengthening under load. Found that forcibly exhaling against a closed glottis (vocal cord), which closes off entrance to trachea (wind pipe) & increases pressures in the chest & abdomen. Weight training enhances 4 of 5 components of health-related fitness! But improvements in cardiovascular fitness are minimal, even w/ circuit weight. 4/5/16: weight training injures joints, weight training depresses growth & development, loss of speed, flexibility, & coordination, women hypertrophy as much as men, spot reduction, muscle turns to fat. Muscle & fat are not magically interchangeable! Sprinters rely upon explosive hip & thigh strength emanating from the center of gravity! Deeper gluteal muscles look like pizza slices! Vastus medialis (worked last 10 15 of knee extension) Latissimus dorsi most heavily activated in hammering plane! Wider grip = more rhomboids, middle trapezius.