Ключевые слова: abstract, active, activity, arm, athlete, athletic, background, blue, body, challenge, compress, effort, equipment, exercise, expander, finger, fist, fitness, flexor, force, grip, gym, gymnastics, hand, health, healthy, horizontal, human, iron, isolated, leisure, lifestyle, man, men, muscle, muscular, people, physical, power, rubber, shape, sport, strength, strong, success, trainer, training, weight, white, young,