Navigation Links
Backpack straps can decrease blood flow in the shoulder and arm
Date:4/7/2008

SAN DIEGO, CA More than 92 percent of the children in the U.S. carry backpacks. Typically the backpacks are loaded with almost one-fourth of the childs body weight (22 percent) and worn with only one strap. Last year, a team of physician researchers examined the effect heavy-loaded backpack straps can have on children. They found the straps can significantly increase pressure when the load is ten percent or more. They also found that strap pressures with loads as small as ten percent of bodyweight can obstruct localized blood flow and contribute to shoulder fatigue.

This year the team has examined pack straps and adults. In some professions, such as the military, firefighting and mountain rescue, the packs may equal as much as 60 percent of adult body weight. The findings of the most recent study indicate that even light loads of 26 pounds can decrease upper extremity blood flow, and may result in a loss of fine motor control and increased fatigue.

Study Being Presented at the 121st Annual Meeting of the American Physiological Society

The studies were conducted by Timothy Neuschwander, Brandon Macias and Alan Hargens, all of the Department of Orthopaedic Surgery, University of CaliforniaSan Diego. Dr. Neuschwander will present the teams findings, Backpack Straps Decrease Upper Extremity Blood Flow, at the 121st Annual Meeting of the American Physiological Society (APS; www.the-APS.org/press), part of the Experimental Biology 2008 scientific conference.

Background and Study Summary

Backpack straps typically rest on an area of the body where they may compress the axillary vein which causes abnormally high blood pressure inside the veins and a subsequent decrease of blood flow in the shoulders and arms. The researchers speculated that blood flow of the large and small vessels of the upper extremity area would decrease in an individual while wearing a backp
'/>"/>

Contact: Donna Krupa
DKrupa@the-aps.org
619-525-6202
American Physiological Society
Source:Eurekalert

Page: 1 2

Related biology news :

1. Accelerometer backpacks aid study of gliding behavior in the flying lemur
2. Ultra-low-dose aspirin might decrease bleeding severity in portal hypertension
3. Hand hygiene initiative aims to decrease healthcare-associated infection in developing countries
4. New study shows Dermytol produces pronounced decrease in malignant melanoma tumor volume
5. High blood pressure, low energy -- a recipe for heart failure
6. Right breakfast bread keeps blood sugar in check all day
7. U of M begins nations first clinical trial using T-reg cells from cord blood in leukemia treatment
8. Folic acid lowers blood arsenic levels, according to Mailman School of Public Health study
9. Folic acid lowers blood arsenic levels in Bangladesh
10. Study reveals a key to blood vessel growth and possible drug target
11. Expecting an afternoon nap can reduce blood pressure
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... , Dec. 15, 2014 The Defense ... it easier to detect and prevent counterfeit microcircuits ... Today the agency started performing an in-house microcircuit ... validate the authenticity of purchased microcircuits while increasing ... quality control measures will be conducted at DLA,s ...
(Date:12/17/2014)... Dec. 16, 2014  Automation is fundamentally transforming ... evident than at international borders. Over the past ... have allowed veteran travelers to self process through ... (APC) Kiosks at an increasing number of airports, ... According to Maxine Most , ...
(Date:12/11/2014)... , Dec. 10, 2014  That blood pressure plays a ... while. Hypertension – the medical term for high blood pressure ... 1800s, and the inflatable cuff that,s used in measuring blood ... mean there,s nothing new about hypertension, its triggers and its ... about the condition and the best ways to treat it. ...
Breaking Biology News(10 mins):Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 2Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 3Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4
... Calif. Models of carbon dioxide in the world,s oceans ... UC Irvine and other scientists published online Sunday in ... surface of warm waters are far more carbon-rich than ... fluctuations could mean that tiny Prochlorococcus and ...
... in unhealthy eating behaviors may cause women who are ... worsening of their moods, according to Penn State researchers. ... their eating behaviors reported that moods worsened after bouts ... the Survey Research Center. "There was little in the ...
... tooth. Research from North Carolina State University shows that the ... sweet, soft fruit giving us new insight into a ... past four years and threatens to cause hundreds of millions ... we know that D. suzukii prefers softer, sweeter ...
Cached Biology News:Ocean plankton sponge up nearly twice the carbon currently assumed 2Unhealthy eating can make a bad mood worse 2Study offers new insights on invasive fly threatening US fruit crops 2
(Date:12/17/2014)... Indianapolis, IN (PRWEB) December 17, 2014 ... for Laboratory Excellence following its most recent COLA ... Accreditation by COLA, a national healthcare accreditation organization. ... rigid standards of quality in day-to-day operations, demonstrate ... and pass a rigorous on-site laboratory survey. ...
(Date:12/17/2014)... San Diego, CA (PRWEB) December 17, 2014 ... strategy and activation agency and member of the Huntsworth ... Jamie Gonzales to its executive team. In her role, ... Services. , “We are incredibly honored to welcome ... said Agency Chief and CEO, Gaëtan Fraikin. “She is ...
(Date:12/17/2014)...  United Therapeutics Corporation (NASDAQ: UTHR ) ... changes to Martine Rothblatt , Ph.D,s compensation program. ... United Therapeutics announced the promotion of Roger Jeffs ... David Zaccardelli , Pharm.D. to Executive Vice President ... Dr. Rothblatt,s title will change from Chairman and Chief ...
(Date:12/17/2014)... FRANCISCO, Calif. , Dec. 17, 2014 /PRNewswire/ ... of a Phase 2 study evaluating the investigational ... treatment of patients with severe, chronic itch who ... standard of care, including topical steroids and antihistamines. ... percent change in Visual Analog Scale (VAS) itch ...
Breaking Biology Technology:Xeno Diagnostics Receives 3rd Award for Laboratory Excellence 2Audacity Welcomes Healthcare Communications Expert Jamie Gonzales as Senior Vice President of Client Services 2United Therapeutics Corporation Announces Executive Promotions and CEO Compensation Change 2United Therapeutics Corporation Announces Executive Promotions and CEO Compensation Change 3United Therapeutics Corporation Announces Executive Promotions and CEO Compensation Change 4Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 3Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 4
... the first time, scientists have shown that amniotic fluid ... potential new source of stem cells for therapeutic applications. ... in Blood , the official journal of the ... other scientists, our research team wondered whether stem cells ...
... Biomedical, Inc., a leader in human embryonic stem cell ... validated kit to produce induced pluripotent stem cells with ... (Logo: http://www.newscom.com/cgi-bin/prnh/20080819/CLTU003LOGO )In ... will launch the complete and fully validated induced pluripotent ...
... 31 Intrinsic Bioprobes, Inc. today announced the ... Institute to develop effective technologies for accurate measurement ... capabilities by effectively discerning diseased from non-diseased states. ... $1,276,360, out of which $1,130,272 is Federal money ...
Cached Biology Technology:Amniotic Fluid May Provide New Source of Stem Cells for Future Therapies 2Amniotic Fluid May Provide New Source of Stem Cells for Future Therapies 3ArunA Biomedical Announces Co-development of Fully Validated Induced Pluripotent Stem Cell Kit 2Intrinsic Bioprobes, Inc. Enters into a $1.27M Contract with the National Cancer Institute to Develop Multiplex Mass Spectrometric Immunoassays for Detection of Low Abundance Cancer-Related Proteins 2