Knee Flexion

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a computer screen shows a muscle and says motion mode on the top
a computer screen shows the motion mode of the plantaris muscles
a computer screen shows a skeleton and muscles and says motion mode at the top
a computer screen shows a skeleton and muscles and says motion mode semitendinosus muscle left
a computer screen shows a skeleton and says motion mode at the top
a man in a pink shirt is sitting in a chair with his leg up
a screen showing a skeleton and muscles with the motion mode displayed
a group of women laying on the grass with a bottle of water

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    a cartoon of a cat with the words cool cats on the bottom right
    a man in a black shirt is riding a blue and yellow exercise machine
    a man in a suit and tie is sitting in a chair with his legs crossed and smiling .
    a picture of a girl with the words best buds chillin ' with my home
    a woman with long hair is sitting in a pink chair with a glass of wine in front of her .
    a little girl is standing on top of a wooden table holding a teapot .
    a man wearing a blue superman shirt sits on a machine in a gym
    a woman is dancing in front of a brick wall wearing leopard print shoes
    a man doing push ups on a blue mat
    a woman in a purple shirt is kneeling down and smiling
    a cartoon character is kneeling down in the middle of a volcano in a dark room .
    a computer screen shows the motion mode of the popliteus
    a computer screen showing a skeleton and muscles with the motion mode at the top
    a man wearing glasses and a camo shirt is sitting in front of a sign that says the rawk
    a computer screen shows a skeleton and says motion mode short head of biceps femoris
    a screenshot of the motion mode of the semimembranosus
    a screenshot of the motion mode of the gracilis muscle right
    a computer screen shows a skeleton and a muscle called the long head of biceps femoris muscle
    a man in a yellow hoodie says " the one who 's winning is me " on a pink background
    a computer screen showing muscles and joints with the motion mode displayed
    a computer screen shows a knee joint and a list of muscles
    a skeleton of a hand is shown on a screen that says " motion mode "
    two anime girls are standing next to each other and looking out a window
    a blurry picture of a man jumping in the air on a tennis court .
    a man is doing push ups on a green floor
    a computer screen shows the adductor magnus muscles
    a screenshot of the motion mode of a sartorius hip flexion
    a man in a yellow shirt and red pants is dancing in a room .
    a man and a girl are dancing on a stage in front of a mara media banner
    a man is sitting on a couch in a dark room wearing glasses .
    a woman in a blue wig sits on the floor in front of a yamaha bag
    a woman is doing push ups on a blue mat with sparkpeople.com in the corner
    a man in a black shirt and red shorts is flexing his muscles in a living room .
    a computer screen shows a skeleton and muscles in motion
    a man holding a device that says dam engineering
    a man without a shirt is doing push ups on a log in the dirt
    a computer screen shows a skeleton with a knee extension
    a woman is carrying a black and white cat on her shoulders .
    a screenshot of a skeleton showing the gracilis muscle in action
    a woman is wearing a pair of jumping boots
    a woman is doing push ups on a chair