Navigation Links
Scientists measure how energy is spent in martial arts
Date:3/19/2012

Two judo fighters face off, one in a white judogi (the traditional judo uniform) and one in blue. They reach for each other's shoulders and lock arms, in what looks like an awkward dance, before the fighter in blue throws his opponent head-over-feet onto the mat.

Judo and mixed martial arts have become increasingly popular over the past few years and scientists have taken note. The two fighters were actually filmed as part of a science experiment that demonstrates how researchers can quantify exactly how the athletes are spending their energy. The video will be published in JoVE, the Journal of Visualized Experiments, the only peer reviewed, PubMed-indexed science journal to publish all of its content in both text and video format.

Previously, researchers have only been able to study predictable sports that are easy to replicate in the laboratory, such as running. With this new method, scientists will be able to study the team and individual sports that have previously been neglected.

"Each sport has specific characteristics which confer different metabolic demands to them," said paper-author Dr. Emerson Franchini. "One of the most important aspects of the metabolic demand is the relative contribution of the energy systems."

Three energy systems are used in exercise: the aerobic metabolism, which uses oxygen to convert nutrients into energy; lactic anaerobic metabolism, which doesn't require oxygen and makes energy exclusively from carbohydrates, with lactic acid as a by-product; and alactic anaerobic metabolism, which makes energy without oxygen and doesn't produce lactic acid.

In this article, the researchers chose to study judo, a complex and unpredictable sport. To figure out the relative contributions of each energy system, the researchers recorded the participants' resting oxygen consumption, and used a portable gas analyzer (which looks a little bit like a mini jet-pack) to measure exercise oxygen consumption. The researchers took these measures, as well as post-exercise oxygen consumption, rest lactate concentration, and peak lactate concentration post-exercise, and used various mathematical formulas to determine how much each individual energy system contributed.

"One amazing aspect of this method is that it can provide information regarding the energy demands of specific components within a sport," said JoVE Content Director, Dr. Aaron Kolski-Andreaco. "For example, the relative contributions of the energy systems can be calculated for different Judo throws, and the authors elegantly demonstrate this in their article."

As the authors point out, the problems with assessing unpredictable or team sports in the laboratory has meant that less attention has been paid to those sports by scientists. They hope that this method will help change that.


'/>"/>

Contact: Katherine Scott
katherine.scott@jove.com
617-765-4367 x301
The Journal of Visualized Experiments
Source:Eurekalert  

Related medicine news :

1. Scientists Pinpoint Area of Brain That Fears Losing Money
2. Scientists Discover How HIV Is Transmitted Between Men
3. Prevention Is Key Research Goal for Premature Babies, Scientists Say
4. Scientists Discover Molecular Pathway for Organ Tissue Regeneration and Repair
5. Scientists find donut-shaped structure of enzyme involved in energy metabolism
6. Neuroscientists reveal new links that regulate brain electrical activity
7. Two UCSF Scientists to Receive Prestigious Dementia Research Honor
8. Johns Hopkins scientists develop personalized blood tests for cancer using whole genome sequencing
9. Scientists Spot Genetic Fingerprints of Individual Cancers
10. Scientists Unravel Mysteries of Intelligence
11. MSU scientists develop more effective method of predicting lead-poisoning risk
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists measure how energy is spent in martial arts
(Date:6/27/2016)... ... June 27, 2016 , ... A revolution ... the emergency ambulance transport experience for the millions of people who require these ... disrupted the taxi industry through the use of technology. Now, SmartEMS has put ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... PawPaws ... a new product that was developed to enhance the health of felines. The formula ... , The two main herbs in the PawPaws Cat Kidney Support Supplement ...
(Date:6/25/2016)... ... ... Bruton Memorial Library on June 21 due to a possible lice infestation, as reported by ... lice: the parasite’s ability to live away from a human host, and to infest common ... the event that lice have simply gotten out of control. , As lice are a ...
(Date:6/25/2016)... ... June 25, 2016 , ... On Friday, June 10, Van Mitchell, Secretary ... Work award to iHire in recognition of their exemplary accomplishments in worksite health promotion. ... Maryland Workplace Health & Wellness Symposium at the BWI Marriott in Linthicum Heights. iHire ...
(Date:6/24/2016)... ... ... Marcy was in a crisis. Her son James, eight, was out of control. Prone to ... , “When something upset him, he couldn’t control his emotions,” remembers Marcy. “If there ... my other children and say he was going to kill them. If we were ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 The vast majority ... outpatient dialysis facility.  Treatments are usually 3 times a ... per visit, including travel time, equipment preparation and wait ... but especially grueling for patients who are elderly and ... skilled nursing and rehabilitation centers for some duration of ...
(Date:6/23/2016)... FRANKLIN, Tenn. , June 23, 2016 ... for automating, integrating and transforming the patient ... launch of several innovative new products and ... depth of its revenue cycle offerings. These ... establish more efficient workflows, remain compliant in ...
(Date:6/23/2016)... 23, 2016  The National Pharmaceutical Council (NPC) ... health policy research organization as its newest member.  ... senior vice president and chief scientific officer, Mallinckrodt ... the NPC Board of Directors. ... has joined us in support of our efforts ...
Breaking Medicine Technology: