Ключевые слова: abstract, action, active, activity, arm, athletic, background, body, bodybuilding, crush, equipment, exercise, exerciser, expand, expander, finger, fist, fit, fitness, flexor, force, fun, gray, grip, gym, gymnasium, hand, handgrip, health, healthy, human, iron, isolated, leisure, lifestyle, man, muscle, muscular, physical, power, rubber, sport, squeeze, strength, strong, tool, training, travel, white, wrist,