What is Running: Definition and 385 Discussions

Running is a method of terrestrial locomotion allowing humans and other animals to move rapidly on foot. Running is a type of gait characterized by an aerial phase in which all feet are above the ground (though there are exceptions). This is in contrast to walking, where one foot is always in contact with the ground, the legs are kept mostly straight and the center of gravity vaults over the stance leg or legs in an inverted pendulum fashion. A feature of a running body from the viewpoint of spring-mass mechanics is that changes in kinetic and potential energy within a stride occur simultaneously, with energy storage accomplished by springy tendons and passive muscle elasticity. The term running can refer to any of a variety of speeds ranging from jogging to sprinting.
Running in humans is associated with improved health and life expectancy.It is assumed that the ancestors of humankind developed the ability to run for long distances about 2.6 million years ago, probably in order to hunt animals. Competitive running grew out of religious festivals in various areas. Records of competitive racing date back to the Tailteann Games in Ireland between 632 BCE and 1171 BCE, while the first recorded Olympic Games took place in 776 BCE. Running has been described as the world's most accessible sport.

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  1. Stephenk53

    B Running on Ice: My High School Story

    I am currently in high school and about to graduate, any way in the past I often threw caution to the wind and ran on ice when I walked home from school. When I was in middle school it went as poorly as one would expect but for some reason I kept trying, in early high school I became extremely...
  2. ChrisVer

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  3. O

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  4. C

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  5. Z

    Determining Binary Search Running Time & Understanding

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  6. Pushoam

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  7. M

    How can I run OpenFOAM on a Mac using Docker?

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  8. M

    What is voltage when running current through copper plats?

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  9. ohwilleke

    I Is there a fine structure constant running anomaly?

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  10. ORF

    Easy way of counting # processeses running?

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  11. J

    Dog running on rotating ball

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  12. M

    Impulse Problem- time-average of normal force when running

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  13. H

    Work done running on an inclined treadmill

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  14. yrjosmiel

    Magnetic field of running current in a wire

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  15. Y

    Running compatibility to install old program in Win10

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  16. Altiano

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  17. X

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  18. N

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  19. Jack of some trades

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  20. R

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  21. andylatham82

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  22. S

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  23. T

    Running code using XCode vs Terminal

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  24. ChrisVer

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  25. J

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  26. T

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  27. T

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  28. S

    A Running coupling of the Higgs potential

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  29. C

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    Homework Statement A baseball player always throws a fastball at a speed of 40.26 m/s. What is the maximum distance, in meter, this player can throw the ball while running toward his teammate who catches the baseball at the same height as he throws at, assuming that this player runs at a speed...
  30. Mr Davis 97

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  31. Pao44445

    Finding work of a man running up stairs

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  32. Bryan Deily

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  33. Luca_Mantani

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  34. T

    Running 12V 30 psi Pump: My Questions Answered

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  35. V

    Rat Running on Ice: Solutions & Tips

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  36. A

    Acceleration around a running track

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  37. 1oldman2

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  38. DeepPatel

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  39. R

    What is the speed of sprinter running away from lens?

    Firsts of this is not my problem I don't even take physics but it is my girlfriends. She doesn't know how to get the answer an neither do I. I took some physics but not enough for this. 1. Homework Statement A sports photographer has a 160-mm-focal-length lens on his camera. The photographer...
  40. ecoo

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  41. G

    A 55.0 kg pole vaulter running at 9.0 m/s vaults over the bar

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  42. I

    Average Velocity for a Runner Running Half a Lap

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  43. N

    Running around a track (km/hr)

    Homework Statement [/B] Chris runs round a track at a speed of 6 km/hour. Dave runs round the same track in a speed of 9 km/hour. When Chris has run 18 laps, how many laps has Dave run? 2. The attempt at a solution Dave runs 1.5 times faster. So Dave will run 18 laps x 1.5 = 27 laps in the...
  44. alliecat

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  45. M

    Running percentage increases and amount of doubles

    Hello people. I want to start of with my first question. What got me thinking about this is actually stock price movements. If a stock rises from 10$ to 15$ on a day, it will have increased by 50% obviously. But what wonders me is what if we break the small movements down. Say that first it...
  46. I

    Matlab running out of memory on code

    Homework Statement I am trying to run code for the code below but MATLAB runs out of data. The Attempt at a Solution NumberOfVariables = 9; k=NumberOfVariables^2-NumberOfVariables+1; integers = 0:k-1; numbers = 1:k-1; tic s = combnk(integers,NumberOfVariables); AllAnswers = []; for i =...
  47. D

    Merge sort running time O(nlogn) formula

    Hello! If T denotes running time, then, as I heard at the lecture, T(n/2) + T(n/2) + O(n) = O(nlogn) where T(n/2) running time for sorting the left half T(n/2) running time for sorting the right half O(n) merging sorted Please, help me to see the math - how did the...
  48. J

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    Hi guys, I'm an arts undergrad student with very little knowledge of the sort of physics I'm about to ask. I was wondering if there is a calculation to work out the differentiation between running at a particular speed say 10mph against wind coming towards you at 15mph. As well as it being on...
  49. W

    Run SQL File: Free Programs to Execute and Query Output

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  50. L

    Girl running after a bus, kinematic equations.

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