How much weight can a person comfortably carry?

Members of the UI Hospitals & Clinics Rehabilitation Services team recommend you carry no more than ten percent of your weight in a backpack. If you weigh 150 pounds, you should carry no more than 15 pounds in a backpack. Here are some additional recommendations from UI Health Care occupational therapists.

uihc.org - Is your backpack too heavy? | University of Iowa Hospitals & Clinics

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Effects of an overweight backpack

Put your backpack on the scale and see how much weight you’re carrying back and forth to work or classes each day. An overweight backpack causes the body to compensate for the extra weight. If you lean forward to compensate, it reduces your balance making it easier to fall. The extra weight can distort the natural curve of the middle and lower back, causing muscle strain. Members of the UI Hospitals & Clinics Rehabilitation Services team recommend you carry no more than ten percent of your weight in a backpack. If you weigh 150 pounds, you should carry no more than 15 pounds in a backpack.

Here are some additional recommendations from UI Health Care occupational therapists.

Tips on packing and carrying your backpack

A textbook can weigh 2 or 3 pounds. Snacks and drinks add a couple more. Keep it to the essentials. Place heavier items closer to the back center and put lighter items out front. Secure items in compartments so they don’t shift. Lift with your legs, bending at the knees, and not with your back. Don’t lift and wiggle at the same time. Use both straps so your posture is even. Snug the straps to keep the backpack from slipping below your hip bone. If you must carry more than the safe weight, carry a book outside the backpack or use a wheeled book bag.

Signs your backpack is too heavy

Your backpack is too heavy if:

It’s difficult to put on or take off.

You have pain from wearing it.

You feel tingling or numbness in your limbs.

Strap marks show on your shoulders.

Your posture changes while wearing it.

Stats on carrying an overweight backpack

2,000 backpack-related injuries each year, according to a national ER poll

55 percent carry loads greater than 10 percent of their body weight, according to a study of grade schoolers 85 percent had discomfort and pain due to backpack use, according to a study of college students 80 percent had less pain and body strain when they changed how they loaded and wore their backpacks, according to a study of middle schoolers

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What is the square with two lines on backpacks for?

It's called a lash tab or pig snout. Originally, it was designed for outdoor packs to pass string through it and fasten equipment. Over time, rubber and plastic replaced leather as weatherproof alternatives. It's also used on personal flotation devices to attach knives, whistles , or other gear.

businessinsider.com - Here's what that square patch on your backpack is actually used for

The leather patch is a popular trend with today's backpacks. It's called a lash tab or pig snout. Originally, it was designed for outdoor packs to pass string through it and fasten equipment. Over time, rubber and plastic replaced leather as weatherproof alternatives. It's also used on personal flotation devices to attach knives, whistles , or other gear. Today, lash tabs are added to backpacks for a vintage look. They are popular among brands such as Herschel Supply Co., Jansport, and L.L.Bean. While you may not go hiking with that new backpack, at least you'll know how to attach your smelly gym shoes

Produced by Sam Rega

EDITOR'S NOTE: This video was originally published on January 17, 2017

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