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1 .This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.
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2 .How many times has this happened to you?
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3 .You start to fall, but then catch yourself and continue on your way.
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4 .Well, new research shows that falling and catching yourself actually happens every time you take a step.
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5 .And that we precisely place our feet as we walk to avoid taking a tumble during this ambulatory balancing act.
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6 .The study is in the journal Biology Letters.
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7 .When humans walk, we put one foot in front of the other.
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8 .But the way each foot lands can vary from step to step.
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9 .This variation in foot placement can appear pretty random.
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10 .But researchers decided to take a closer look.
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11 .They fitted 10 volunteers with motion caption markers and then watched as the subjects walked on a treadmill.
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12 .The investigators discovered that that they could predict exactly where each foot would fall based on the movement of the person's pelvis during the previous step.
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13 .The body falls forward and sideways as we walk¡ and the feet come down in a way that restores our balance.
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14 .The findings could be useful for developing ways to help people with movement disorders regain their stability.
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15 .The info could also make walking robots more surefooted.
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16 .So they don't, you know, fall down on the job.
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17 .Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.
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