Navigation Links
Ibuprofen or acetaminophen in long-term resistance training increases muscle mass/strength
Date:4/6/2008

Taking daily recommended dosages of ibuprofen and acetaminophen caused a substantially greater increase over placebo in the amount of quadriceps muscle mass and muscle strength gained during three months of regular weight lifting, in a study by physiologists at the Human Performance Laboratory, Ball State University.

Dr. Chad Carroll, a postdoctoral fellow working with Dr. Todd Trappe, reported study results at Experimental Biology 2008 in San Diego on April 6. His presentation was part of the scientific program of the American Physiological Society (APS).

Thirty-six men and women, between 60 and 78 years of age (average age 65), were randomly assigned to daily dosages of either ibuprofen (such as that in Advil), acetaminophen (such as that in Tylenol), or a placebo. The dosages were identical to those recommended by the manufacturers and were selected to most closely mimic what chronic users of these medicines were likely to be taking. Neither the volunteers nor the scientists knew who was receiving which treatment until the end of the study.

All subjects participated in three months of weight training, 15-20 minute sessions conducted in the Human Performance Laboratory three times per week. The researchers knew from their own and other studies that training at this intensity and for this time period would significantly increase muscle mass and strength. They expected the placebo group to show such increases, as its members did, but they were surprised to find that the groups using either ibuprofen or acetaminophen did even better. An earlier study from the laboratory, measuring muscle metabolism (or more precisely, muscle protein synthesis, the mechanism through which new protein is added to muscle), had looked at changes over a 24 hour period. This acute study found that both ibuprofen and acetaminophen had a negative impact, by blocking a specific enzyme cyclooxygenase, commonly referred to as COX.

But that study looked at only one day. Over three months, says Dr. Trappe, the chronic consumption of ibuprofen or acetaminophen during resistance training appears to have induced intramuscular changes that enhance the metabolic response to resistance exercise, allowing the body to add substantially more new protein to muscle.

The amount of change was measured in quadricep muscles using Magnetic Resonance Imaging (MRI), the gold standard for determining muscle mass. The researchers now are conducting assays of muscle biopsies taken before and after the three-month period of resistance training, in order to understand the metabolic mechanism of the positive effects of ibuprofen and acetaminophen.

One of the foci of Ball States Human Performance Laboratory is the adaptation of the elderly to exercise. Another is the loss of muscle mass that takes place when astronauts are exposed to long-term weightlessness. This work has implications for both groups, says Dr. Trappe.


'/>"/>

Contact: Sylvia Wrobel
ebpress@gmail.com
770-722-1055
Federation of American Societies for Experimental Biology
Source:Eurekalert

Related biology news :

1. Unique pattern of gene expression can indicate acetaminophen overdose
2. Mixing large doses of both acetaminophen painkiller and caffeine may increase risk of liver damage
3. Long-term use of mechanical ventilation contributes to the deterioration of human diaphragm muscle
4. Novel mechanism for long-term learning identified by Carnegie Mellon researchers
5. Atomic bomb survivor, scientists mark 60 years of long-term radiation study
6. Tropical crab invades Georgia oyster reefs -- but the long-term impact cant be predicted
7. Meth exposure in young adults leads to long-term behavioral consequences
8. Common aquatic animals show extreme resistance to radiation
9. BARACLUDE data show low resistance over 5 years in nucleoside-naive hepatitis B patients
10. Gene that controls ozone resistance of plants could lead to drought-resistant crops
11. High degree of resistance to antibiotics in Arctic birds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/15/2016)... , Dec. 14, 2016 "Increase in mobile ... market" The mobile biometrics market is expected to grow ... billion by 2022, at a CAGR of 29.3% between ... such as the growing demand for smart devices, government ... "Software component is expected to grow at ...
(Date:12/7/2016)... 2016 According to a new market research report "Emotion ... Expression, Voice Recognition), Service, Application Area, End User, And Region - Global Forecast ... USD 6.72 Billion in 2016 to USD 36.07 Billion by 2021, at a ... Reading ... MarketsandMarkets Logo ...
(Date:12/6/2016)... , Dec. 6, 2016  Zimmer Biomet Holdings, Inc. ... has priced an offering of €500.0 million principal amount of ... principal amount of its 2.425% senior unsecured notes due 2026. ... to occur on December 13, 2016, subject to the satisfaction of ... annual basis. The Company intends ...
Breaking Biology News(10 mins):
(Date:1/18/2017)... ... 18, 2017 , ... uBiome, the leading microbial genomics company, ... Editor, Dr. Elisabeth Bik, in the December 2016 issue of the Dutch Journal ... October 2016 from her previous position at Stanford University School of Medicine and ...
(Date:1/18/2017)... Texas , Jan. 18, 2017  Caris ... and the Lustgarten Foundation, the largest private funder ... a clinical trial evaluating the impact of immunotherapy ... providing clinical trial enrollment services to identify potential ... facilitate communication between treating physicians and study investigators. ...
(Date:1/17/2017)... ... 17, 2017 , ... MS Technologies™ and Bayer have received ... Performance System will combine industry-leading genetics with a double herbicide-tolerant trait that will ... Bean herbicide. The Balance™ GT Soybean Performance System will benefit soybean growers by ...
(Date:1/17/2017)... WARSAW, Ind. , Jan. 17, 2017  Zimmer ... its fourth quarter and full-year 2016 sales and earnings ... on Tuesday, January 31, 2017, at 8 a.m. Eastern ... results will be made available at 7:30 a.m. Eastern ... The live audio webcast can be accessed via Zimmer ...
Breaking Biology Technology: