Navigation Links
Early parents didn't stand for weighty kids
Date:4/23/2008

Scientists investigating the reasons why early humans the so-called hominins began walking upright say its unlikely that the need to carry children was a factor, as has previously been suggested.

Carrying babies that could no longer use their feet to cling to their parents in the way that young apes can has long been thought to be at least one explanation as to why humans became bipedal.

But University of Manchester researchers investigating the energy involved in carrying a child say the physical expense to the mother does not support the idea that walking upright was an evolutionary response to child transportation.

Walking upright is one of the major characteristics that separates humans from their primate relatives, said Dr Jo Watson, who carried out the research in the Universitys Faculty of Life Sciences.

Scientists have long hypothesised as to the reasons why hominins became bipedal in a relatively short space of time but the truth is we still dont know for sure.

One of the more popular explanations is that walking upright freed our forelimbs allowing us to carry objects, including children; apes have no need to carry their young as they are able to grip using both hands and feet.

Our study focused on the amount of energy required to carry 10kg loads, including a mannequin child. Importantly, the distribution of the weight varied in each instance.

The team monitored the oxygen consumption of seven women, all healthy individuals under the age of 30, carrying either a symmetric load, in the form of a weighted vest or a 5kg dumbell in each hand, or an asymmetric load, which was a single 10kg weight carried in one hand or a mannequin infant on one hip.

Carrying an awkward asymmetric load, such as the infant on one side of the body, is the most energetically expensive way of transporting the weight, said Dr Watson, whose research is published in the Journal of Human Evolution.'/>"/>

Contact: Aeron Haworth
aeron.haworth@manchester.ac.uk
44-161-275-8383
University of Manchester
Source:Eurekalert  

Page: 1 2

Related biology news :

1. 60 second test could help early diagnosis of common brain diseases
2. Restless legs syndrome affects nearly 2 percent of US/UK children
3. Bleeding, not inflammation, is major cause of early lung infection death
4. Pig study sheds new light on the colonisation of Europe by early farmers
5. Color contrast is seen by the brain early doors
6. Extra gene copies were enough to make early humans mouths water
7. Was ability to run early mans Achilles heel?
8. New technique can be breakthrough for early cancer diagnosis
9. Yam bean a nearly forgotten crop
10. NIH awards nearly $23M to University of Chicago for translational research
11. Yam bean a nearly forgotten crop
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Early parents didn't stand for weighty kids
(Date:9/22/2014)... (Sept. 22, 2014) As genetic sequencing technologies continue ... is a critical need to establish appropriate policies and ... experts have said. A special policy issue of the ... online today and edited by experts with the Center ... of Medicine gives policy makers the tools to jumpstart ...
(Date:9/22/2014)... fishes that manufacture their own "antifreeze" proteins to ... an unfortunate side effect, researchers report: The protein-bound ... melting even when temperatures warm. , The ... the National Academy of Sciences . , "We ... of the evolution of antifreeze proteins in Antarctic ...
(Date:9/22/2014)... of the fires captured in this image burn in Khabarovsk ... Okhotsk. Dozens of red hotspots, accompanied by plumes of smoke ... grey, blows to the east towards the Sea of Okhotsk. ... of this area, swampy forest inhabit the central depression, and ... While large wildfires are common in Russia in the summer, ...
Breaking Biology News(10 mins):Experts provide much-needed policy analysis for clinical integration of next generation sequencing 2Experts provide much-needed policy analysis for clinical integration of next generation sequencing 3Study: Antifreeze proteins in Antarctic fishes prevent freezingand melting 2Study: Antifreeze proteins in Antarctic fishes prevent freezingand melting 3
... Bread wheat ( Triticum aestivum ) is one of ... the calories consumed by people. Fully 35% of the world,s ... Now an international team of scientists, including a group from ... analysis of its full genome. The study reveals ...
... pro-iBiosphere aims to prepare (= pro), through ... (= sphere) for intelligent (= i) management of biodiversity ... Open Biodiversity Knowledge Management System will play a major ... It will create an authoritative framework including discovery of ...
... published by the U.S. Department of Agriculture,s (USDA) Economic ... the journal Science examine the relationship between ... and their importance in agricultural input industries. The ... study that provides new details on the rapid growth ...
Cached Biology News:Bread wheat's large and complex genome is revealed 2Bread wheat's large and complex genome is revealed 3Toward an European open biodiversity knowledge management system 2USDA study shows trends in public and private agricultural R&D 2
(Date:9/22/2014)... create a highly sensitive chemical sensor based on the ... electronic properties that the researchers were able to exploit ... times. , The study is available online in advance ... Salehi- Khojin, asst professor of mechanical and industrial engineering ... Bijandra Kumar, post doc where they are doing research ...
(Date:9/22/2014)... , Sept. 22, 2014 US demand ... demand for specialty biocides is forecast to rise 3.9 ... volume terms, demand is projected to increase 1.3 percent ... period. A strong rebound in construction expenditures will support ... and coatings markets, while growth in consumer spending and ...
(Date:9/22/2014)... 2014 Follow us on ... young has groomed and nurtured anti-aging products and ... emphasis on appearance maintenance is benefitting the market ... protein obtained from the bacterium, Clostridium Botulinum, which ... relaxation. With cosmetic indications for botulinum toxin ranging ...
(Date:9/22/2014)... TORONTO , Sept. 22, 2014 ... announced that it has entered into a collaboration ... UHN,s Centre for Molecular Design and Preformulations (CMDP) ... The goal of the project is to increase ... proprietary buccal insulin spray product, thereby reducing the ...
Breaking Biology Technology:Graphene imperfections key to creating hypersensitive 'electronic nose' 2US Biocides Market 2US Biocides Market 3Strong Demand for Non-Invasive Cosmetic Procedures Drives the Global Botulinum Toxin Market, According to New Report by Global Industry Analysts, Inc. 2Strong Demand for Non-Invasive Cosmetic Procedures Drives the Global Botulinum Toxin Market, According to New Report by Global Industry Analysts, Inc. 3Generex Collaborates with University Health Network for Buccal Insulin Project 2Generex Collaborates with University Health Network for Buccal Insulin Project 3Generex Collaborates with University Health Network for Buccal Insulin Project 4
... Massachusetts and LAUSANNE, Switzerland, August 6 /PRNewswire/,-- Curis, ... development company focused on,developing proprietary targeted medicines for ... companies with a focus on the development of,prescription ... that they,have entered into a worldwide, exclusive license ...
... China, Aug. 6 /PRNewswire-Asia-FirstCall/ -- China Sky One Medical,Inc. ... CSKI ), a leading,fully integrated pharmaceutical company producing ... announced the appointment of Mr.,William Wei Lee as an ... effective August 4, 2009. Mr. Jiang Qi-Feng resigned from ...
... 6 Interleukin Genetics, Inc. (NYSE Amex: ... conference call and webcast on Thursday, August 13, 2009, at 4:30 ... financial results. , , To access the live ... replay access of the teleconference will be available on the Investors ...
Cached Biology Technology:Curis and Debiopharm Sign an Exclusive License Agreement Covering the HSP90 Inhibitor CUDC-305 2Curis and Debiopharm Sign an Exclusive License Agreement Covering the HSP90 Inhibitor CUDC-305 3Curis and Debiopharm Sign an Exclusive License Agreement Covering the HSP90 Inhibitor CUDC-305 4Curis and Debiopharm Sign an Exclusive License Agreement Covering the HSP90 Inhibitor CUDC-305 5Curis and Debiopharm Sign an Exclusive License Agreement Covering the HSP90 Inhibitor CUDC-305 6China Sky One Medical, Inc. Appoints New Independent Director 2China Sky One Medical, Inc. Appoints New Independent Director 3
... is an integrated digital microscope and camera ... equipment setup, optical adjustment or software installation. ... technology, COOLSCOPE combines simplicity and advanced technology ... offers simultaneous viewing of a macro image ...
... DASGIP Overhead Drive for individual and parallel ... flexible agitation of DASGIP vessels, featuring range ... ,Up to 16 overhead drives can ... Cultivation Systems fedbatch-pro® and cellferm-pro® for microbiology ...
This kit is designed to select cells labeled with biotinylated antibodies. Kit includes reagents for labeling 3 x 10 9 cells and EasySep magnet....
Designed for use with the Agencourt CleanSEQ and Agencourt AMPure 384-well SPRI reagent kits. For use with 384-well thermal cycling plates....
Biology Products: