Navigation Links
Walking Upright Saves Humans 75 Pc More Energy Compared to Apes

Though as to exactly when humans started walking on two legs is something yet to be ascertained, scientists have nevertheless hypothesized that bipedalism evolved as a way of reducing locomotor energy costs.

In the first study to fully examine this theory among humans and adult chimpanzees, the team of scientists from Washington University in St. Louis, University of California and University of Arizona, used treadmill trials to analyze walking energetics and biomechanics for adult chimpanzees and humans.

The only other research study on chimpanzee locomotor cost, conducted in 1973, used juvenile chimpanzees, which have different locomotor mechanics and costs than adults.

The team also examined the early hominin fossil record, which they found to include predicted changes consistent with lower energy cost- longer hind legs compared to body mass and structural changes to the pelvic bone allowing for more upright walking.

Analysis of these features in early fossil hominins, coupled with analysis of bipedal walking in chimpanzees, revealed that human walking was around 75 percent less costly, in terms of energy and caloric expenditure than bipedal walking and quadrupedal knucklewalking in chimpanzees.

The energy savings could have provided early hominids with an evolutionary advantage over other apes by reducing the cost of foraging for food, said Herman Pontzer, Ph.D., assistant professor of Anthropology in Arts & Sciences at Washington University in St. Louis.

"Walking upright on two legs is a defining feature that makes us human. It distinguishes our entire lineage from all other apes," said Prof. Pontzer.

The study "Chimpanzee Locomotor Energetics and the Origin of Human Bipedalism" appears in online in the July 17 issue of the Proceedings of the National Academy of Sciences




'"/>




Page: 1

Related medicine news :

1. Brisk Walking lowers memory loss in women
2. Cobblestone Walking May Be The Key For Healthy Living.
3. Peripheral Artery Disease Can Be Delayed By Walking
4. Gardening, Walking and moderate drinking reduce risk of dementia
5. Hi-tech Walking Stick Developed For Visually Impaired
6. Fight Nicotine With Brisk Walking
7. Electronic Nerve Stimulator Enables Walking
8. Targeted Initiatives may Help Promote Walking in People
9. New Device for Stroke Patients Improves Walking
10. Walking Really is the Best Way to Keep Healthy
11. Walking is Vital to Keep Yourself Fit
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/21/2017)... ... April 21, 2017 , ... Evoke Therapy ... adults, has kicked off its 4th annual Forum for Innovative Treatment Solutions (FITS), ... “Attachment Informed Therapy for Mental Health and Addiction.” , FITS’ 2017 keynote ...
(Date:4/21/2017)... (PRWEB) , ... April 21, 2017 , ... The adage ... Flex House, the next project in the company’s esteemed VISION House demonstration project series. ... use exactly the amount of resources they need to live affordably and abundantly without ...
(Date:4/21/2017)... Arvada, CO (PRWEB) , ... April 21, 2017 ... ... health and performance system, has partnered with O2X , an active lifestyle ... are focused on improving the health of firefighters, police offers, first responders, military ...
(Date:4/21/2017)... CA (PRWEB) , ... April 21, 2017 , ... ... Joseph Health held the much anticipated Regional Primary Care Spring Symposium on April ... in the local medical community, offering physicians and healthcare providers an opportunity to ...
(Date:4/21/2017)... City, UT (PRWEB) , ... April 21, 2017 , ... ... solutions, recently partnered with Advanced Patient Care of Utah (APCUT) and has appointed Rex ... for the next chapter of growth for our agency and our ability to provide ...
Breaking Medicine News(10 mins):
(Date:4/19/2017)...  Sorrento Therapeutics, Inc. (NASDAQ: SRNE ... new treatments for cancer and other unmet medical ... announced underwritten public offering of 23,625,084 shares of ... of $2.00 per share, before deducting underwriting discounts ... Sorrento.  The net proceeds to Sorrento from this ...
(Date:4/18/2017)... Ohio , April 18, 2017  Cardinal Health ... Non-GAAP 1 fiscal 2017 earnings per share (EPS) ... and 2019.  This is in conjunction with this morning,s ... Deep Vein Thrombosis and Nutritional Insufficiency businesses. ... from continuing operations will be at the bottom of ...
(Date:4/18/2017)... BLOOMINGTON, Minn. , April 18, 2017 ... ) ("Imprimis"), an ophthalmology-focused pharmaceutical company, and Cameron ... announced the signing of a three-year exclusive sales ... deploy a dedicated sales team to introduce Imprimis, ... primarily focused in 13 states in the U.S. ...
Breaking Medicine Technology: