Fatigue (2) Quadriceps muscle (2) Muscles (2) Fatiga (2) Músculos (2) Muscle quadriceps fémoral (2) Fatigue (2) Muscles (2) Contraction (1) Price-earnings ratio (1) Isokinetic exercise (1) Walking (1) Ventilation (1) Time (1) Squatter settlements (1) Spleen (1) Revolutions (1) Relaxation (1) Pension trusts (1) Oxygen (1) Neural stimulation (1) Nerves (1) Mechanics (1) Knee (1) Heart beat (1) Gait in humans (1) Cycling (1) Addition (1) Adaptations (1) Adaptations (1)