Related by context. Frequent words. (Click for all words.) 55 muscles tendons 52 muscles 52 muscle 48 skeletal muscles 47 muscle atrophy 45 Aerobic exercise 44 tendons 44 hip flexors 44 muscle contractions 43 proprioception 42 lower extremity 42 inflammation 42 elbows knees 42 muscle tissue 42 connective tissues 42 musculature 41 sensory nerves 41 repetitive motions 41 metabolically active 41 muscular endurance 40 synovial fluid 40 obliques 40 calf muscles 40 muscle fibers 40 arthritic joints 40 strenuous exercise 40 vasodilation 40 upper extremities 40 strenuous workouts 40 flex 40 knees hips 39 hips knees 39 exertion 39 facial muscles 39 abdominal muscles 39 skeletal muscle 39 Muscles 39 contractile 39 neuromuscular 39 glutes 38 postural 38 muscular skeletal 38 ankles knees 38 oxygen uptake 38 contractility 38 Muscle 38 peripheral nerves 38 electrolyte imbalance 38 abdominal exercises 38 Kegel exercises 38 vasoconstriction 38 glute 37 metabolic processes 37 aerobic exercises 37 releases endorphins 37 exerciser 37 flexing 37 atrophy 37 hind limbs 37 lower extremities 37 ligaments 37 stair climbing 36 resting metabolic 36 soft tissues 36 stimulation 36 abdominals 36 jaw muscles 36 gluteus maximus 36 pronation 36 cardio vascular 36 tissues 36 spinal chord 36 tensing 36 fetlock joint 36 soft tissue 36 profuse sweating 36 tendon sheath 36 hyperextension 36 steroid injections 36 stiffness 36 electrical stimulation 35 aching joints 35 hypertrophy 35 collagen fibers 35 nerve endings 35 connective tissue 35 autonomic nervous system 35 chemical messengers 35 metabolism 35 arthritic 35 pec 35 sarcopenia 35 ambulation 35 fluid retention 35 lifting weights 35 achy 35 scapula 35 abdominal organs 34 physiologically 34 flexion 34 cramping