low angle view of gymnast practicing on uneven parallel bars / lindon, utah, united states - 雙槓 個影片檔及 b 捲影像00:13
slow motion low angle view of gymnast practicing on uneven parallel bars / lindon, utah, united states - 雙槓 個影片檔及 b 捲影像00:15
low angle view of gymnast practicing on uneven parallel bars / lindon, utah, united states - 雙槓 個影片檔及 b 捲影像00:10
[clip from canadian propaganda film "soldiers all," from the series "canada carries on" by the national film board of canada; narration throughout by... - 雙槓 個影片檔及 b 捲影像01:28
outdoor gym with sports equipment - parallel bars, gymnastic bars, horizontal bar, monkey bar, exercise machines. bodyweight training. family workout in the city park - 雙槓 個影片檔及 b 捲影像00:10
young family doing exercise outdoors in the park on the sports field. father with children train together on sports machines and equipment - 雙槓 個影片檔及 b 捲影像00:12
muscle: electrical activity of contraction - part 15 of 15. the regulation of single muscle fiber contractions is achieved through a relationship that exists between muscle fibers and nerve impulses. using highly specialized equipment, dr. martin morad de - 雙槓 個影片檔及 b 捲影像00:27
muscle: electrical activity of contraction - part 1 of 15. the regulation of single muscle fiber contractions is achieved through a relationship that exists between muscle fibers and nerve impulses. using highly specialized equipment, dr. martin morad dem - 雙槓 個影片檔及 b 捲影像00:28女人
muscle: chemistry of contraction - part 1 of 26. what part of the muscle contracts and what triggers the contraction? with the aid of an electron microscope and a simple tabletop model of muscle filaments, dr. georges r. marchal, universit de louvan, d - 雙槓 個影片檔及 b 捲影像00:33
two turkish athletes won gold medals and a third picked up a bronze at the artistic gymnastics world challenge cup on sunday.in the men’s still rings... - 雙槓 個影片檔及 b 捲影像00:42
"looking ahead to the olympic games" superimposed over olympic flame / title: "gymnastic squad named" superimposed over gymnasts in action /... - 雙槓 個影片檔及 b 捲影像01:29
female ballet teacher showing her class the correct posture and then going around her students correcting them while they hold on to the parallel bars - 雙槓 個影片檔及 b 捲影像00:24
latin american focused teacher explaining the routine to her students during a ballet lesson at the studio - 雙槓 個影片檔及 b 捲影像00:11跳舞
beautiful ballet teacher correcting the posture of her students while stretching their back and arms holding the parallel bars - 雙槓 個影片檔及 b 捲影像00:19
group of students using parallel bars to stretch their back and arms as the teacher goes around and corrects their posture - 雙槓 個影片檔及 b 捲影像00:19
group of ballet students using the parallel bars following their teachers instructions during a lesson while holding on to the parallel bars - 雙槓 個影片檔及 b 捲影像00:21
female professional ballet dancer explaining to the routine to the students while they hold on to the parallel bars - 雙槓 個影片檔及 b 捲影像00:18
beautiful female instructor correcting the posture of a male student during a ballet lesson while holding on to the parallel bars - 雙槓 個影片檔及 b 捲影像00:09
pows with branches over shoulders carrying big buckets of water down dirt road, telephone poles along one side, can see tents inside fence on other... - 雙槓 個影片檔及 b 捲影像03:13戰俘
within the walls of a stone castle complex, numerous white-clad men perform various calisthenics and jump over a striped obstacle; men leapfrog over... - 雙槓 個影片檔及 b 捲影像01:11
