New Research Finds Rise in Injuries Caused by Walking and Texting

Using your cellphone while walking could be more distracting than you think.
3:30 | 08/28/15

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Transcript for New Research Finds Rise in Injuries Caused by Walking and Texting
It is 7:43 and "Gma" is on the lookout this morning. Talking about the dangers of texting while walking. We have all done it and now new research finds a dramatic rise in the number of injuries caused by pedestrians on their phones. ABC's T.J. Holmes reports. Reporter: Watch as this guy walks smack dab into a wall while he's fixated on his cell phone. Other than damaged pride, he walked away unharmed. But in a new study researchers estimate more than 1500 serious injuries from texting pedestrians or petextrians double since 2005. It is a huge problem. Everybody is so addicted to their technology. Reporter: "Gma on the lookout" hitting the streets to see it for ourselves and in no time we see plenty buried in their phones. My name is T.J. Holmes. I'm with "Good morning America." Actually doing something, walking and texting. I think I have pretty good peripheral vision. Reporter: You didn't see a car, though. Okay, I'll give you that. Reporter: You might think you've mastered the art of texting and walking. Experts warn, think again. We can't make those split-second decisions if we're focused on our phones. Reporter: Francie said she fell. I stepped off the curb and twisted both of my ankles. Reporter: Luckily she was not hurt but on crutches for weeks. Ever since I haven't texted and walked not once. Reporter: Stony brook university putting this obstacle course together to show how hard it is to concentrate on anything else when you're on your phone. Just navigate over the yardsticks while texting. Simple enough. It took me nine seconds without distractions but it took me 16 seconds while sending a simple text. But watch what happens when I go through it again but this time writing a text that requires some thinking. You got to text what you had for dinner last night. I got nothing. I haven't texted anything. And then when I tried to pick up the pace. A simple test showing just how easy it is to be tripped up and better here than out there. I'm going to be so much more aware of this. All right. Here we go. Lara, it's your turn. The key is go at Normal speed. Whatever you would do walking down a New York street and I'm going to ask you some questions, researchers from stony brook are at the end so go right ahead. I'll ask you the question, ready. Wait, then -- using my phone so -- Put it out there. First tell me what you had for dinner last night, go. Lara. Okay. Can I have a do-over. No, we have to pick that back up. How about the last movie you saw? Wait, I have to send that to you. You're supposed to keep walking. This is a quiz. Hold on. What is the last movie I saw? I didn't see it but I'll just write a movie. Our researchers here, now it's clear how she did necessarily but it gives you an idea how difficult it is to have to think and walk at the same time. That is typical just the whole walking thing for me so, thank you. As you can see, everybody, please don't text and walk. This has been a psa from "Gma." Back to you. Texting and walking in 4-inch heels. Yeah. True. She definitely stopped trying at some point. She was just kicking them.

This transcript has been automatically generated and may not be 100% accurate.

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