HOME >> BIOLOGY >> NEWS
Why does caffeine delay exercise-induced fatigue?

If the researchers were correct, the CNS administration of caffeine will increase run time to fatigue, whereas NECA will reduce run time to fatigue. Furthermore, pretreatment with caffeine before NECA will weaken the fatigue-inducing effects of NECA.

The authors of "Central Nervous System Effects of Caffeine and Adenosine on Fatigue," are J. Mark Davis, Zuowei Zhao, Howard S. Stock, Kristen A. Mehl, James Buggy, and Gregory A. Hand, all from the Schools of Public Health and Medicine, University of South Carolina, Columbia, SC. Their findings appear in the February 2003 edition of the American Journal of Physiology Regulatory, Integrative and Comparative Physiology. The journal is one of 14 peer-reviewed publications produced monthly by the American Physiological Society (APS).

Methodology

Male Wistar rats, five weeks old and weighing 200-250 grams, were used in this study, and randomly assigned to intracerebroventricular or intraperitoneal injection groups. Rats were given two weeks of treadmill acclimation of running for 15 minutes a day. The treadmill speed was slowly increased from eight meters a minute, 7.5 percent grade at the beginning, progressing to 20 meters a minute at the end of the acclimation period. Gentle hand prodding and mild electric shock were combined to encourage the animals to run throughout the study.

After the first two weeks of acclimation, rats assigned to the intracerebroventricular group were anesthetized with pentobarbital sodium, and tubes were implanted bilaterally into the lateral ventricles. After seven days of recovery from surgery, the rats were again acclimated to treadmill running for another one to two weeks, until they were able to run easily for at least 15 minutes per day for 5 consecutive days at a speed of 20 meters a minute at a 7.5 percent grade. Animals that were unable to run at that pace were excluded.

Four drug treatments were used in the study: NECA, caffeine, caffeine
'"/>

Contact: Donna Krupa
djkrupa1@aol.com
703-527-7357
American Physiological Society
18-Mar-2003


Page: 1 2 3 4

Related biology news :

1. Why some neonates need caffeine
2. Researchers study metabolic, cardiovascular effects of caffeine consumed with naringin
3. The genetic basis for caffeine-induced anxiety discovered
4. UT Southwestern scientist explores caffeine-signaling activity in brain function
5. Findings conclude sustained caffeine intake negates the benefits of creatine supplements
6. Medicines, caffeine and antibacterial soap among contaminants found in American streams
7. Moderate caffeine use does not increase miscarriage risk but high caffeine use doubles risk
8. Pollutant causes delayed flowering in plants
9. Mammoths stranded on Bering Sea island delayed extinction
10. Pesticide delays sexual maturation
11. Genetics mutations resulting in delayed puberty are focus of MCG study

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Why does caffeine delay exercise induced fatigue

(Date:10/18/2014)... stress and stress-related psychiatric disorders are associated ... the molecular mechanisms underlying this relation are ... the development of targeted preventive strategies and ... diseases. This work is presented at the ... Now an international group of researchers from ...
(Date:10/18/2014)... In a sample of patients with undiagnosed, suspected genetic ... associated with a higher molecular diagnostic yield than traditional ... JAMA . The study is being released to ... meeting. , Exome sequencing, which sequences the protein­coding region ... genetic material present in a cell or organism), has ...
(Date:10/17/2014)... available in German . ... every day in order to reproduce? And why are there ... of the latest issue of the research journal Molecular ... biologist Steven Ramm from Bielefeld University Bielefeld has compiled this ... unusual for a female to copulate with several males in ...
Breaking Biology News(10 mins):Researchers find why depression and aging linked to increased disease risk 2Study examines type of exome sequencing and molecular diagnostic yield 2Study examines type of exome sequencing and molecular diagnostic yield 3Sperm wars 2
(Date:10/19/2014)... The Asian Orthopedic braces and support systems report defines and ... of revenue. The Orthopedic braces and support systems market in ... 2018, at a developing CAGR of 4.4% from 2013 to ... braces and support systems market, to get an idea of ... the segmentation of orthopedic braces and support systems market in ...
(Date:10/18/2014)... The report "1,6-Hexanediol Market by Application ... 2019", analyzes the global market on the basis ... industry details such as the key drivers, current ... , Browse 81 Market Data Tables and 29 ... on “1,6-Hexanediol Market by Application and by Geography ...
(Date:10/18/2014)... (PRWEB) October 18, 2014 The ... rate in the five years to 2014. The industry's ... renewable energy tax credits that encouraged the use of ... renewable portfolio standards (RPSs), which require local utilities to ... their total energy portfolio. Increased campaigning for green technology ...
(Date:10/17/2014)... Alice,s journey through the looking-glass to Wonderland, mirrors in ... unexpected ways, including a new class of mirror that ... in The Optical Society,s (OSA) new high-impact journal ... first time, a new type of mirror that forgoes ... light by using an unusual magnetic property of a ...
Breaking Biology Technology:The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 2The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 21,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 31,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 5Biomass Power in the US Industry Market Research Report from IBISWorld Has Been Updated 2Biomass Power in the US Industry Market Research Report from IBISWorld Has Been Updated 3Magnetic mirrors enable new technologies by reflecting light in uncanny ways 2Magnetic mirrors enable new technologies by reflecting light in uncanny ways 3Magnetic mirrors enable new technologies by reflecting light in uncanny ways 4
Cached News: