Echinacea-Based Dietary Supplement Does Not Increase Maximal Aerobic Capacity in Endurance-Trained Men and Women

Journal of Dietary Supplements
Jada L StevensonJamie A Cooper

Abstract

To determine if an echinacea-based dietary supplement (EBS) provided at two different doses (a regular dose (RD), 8,000 mg/day, vs. a double dose (DD), 16,000 mg/day) would increase erythropoietin (EPO) and other blood markers involved in improving aerobic capacity and maximal oxygen consumption (VO2max) in endurance-trained men. Secondly, to determine if any sex differences exist between male and female endurance-trained athletes. Forty-five endurance athletes completed three visits during a 35-day intervention. Participants were randomized into placebo (PLA; n = 8 men, n = 7 women), RD of EBS (n = 7 men, n = 8 women), or DD of EBS (n = 15 men) for the 35-day intervention period. At baseline, weight, body composition, and VO2max were measured. Blood was drawn to measure EPO, ferritin, red blood cells, white blood cells, hemoglobin, and hematocrit. At the mid-intervention visit, blood was collected. At the post-intervention visit, all measurements from the baseline visit were obtained once again. There was a significant increase in VO2max for endurance-trained men in PLA (increase of 2.8 ± 1.5 ml kg(-1) min(-1), p = .01) and RD of EBS (increase of 2.6 ± 1.8 ml kg(-1) min(-1), p = .04), but not in DD of EBS (p = .96). Importantl...Continue Reading

References

Jan 1, 1977·Annals of the New York Academy of Sciences·M L Pollock
Feb 1, 1989·The Journal of Experimental Medicine·M C CuturiG Trinchieri
May 1, 1986·Journal of the American College of Cardiology·W H MartinA A Ehsani
Nov 1, 1987·International Journal of Sports Medicine·J L DurstineW P Bartoli
Nov 1, 1987·International Journal of Sports Medicine·R R PateB J Miller
Nov 1, 1968·Journal of Applied Physiology·B Ekblom, L Hermansen
Sep 1, 1967·Journal of Applied Physiology·B Saltin, P O Astrand
Sep 1, 1995·Medicine and Science in Sports and Exercise·E T HowleyH G Welch
Mar 1, 1997·Pflügers Archiv : European journal of physiology·J M PequignotR Favier
Jul 1, 1997·International Journal of Immunopharmacology·R A BurgerB G Hughes
Apr 6, 2000·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·V JosephJ M Pequignot
Jan 29, 2002·International Immunopharmacology·Vinti GoelTapan K Basu
Feb 8, 2002·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Vincent JosephJean Marc Pequignot
Jul 17, 2004·Biological & Pharmaceutical Bulletin·Satoshi MishimaYeunhwa Gu
Nov 25, 2005·European Journal of Applied Physiology·Julien V BrugniauxJean-Paul Richalet
Dec 6, 2005·European Journal of Applied Physiology·Paul RobachJean-Paul Richalet
Jun 14, 2006·European Journal of Applied Physiology·Laurent SchmittJean-Paul Richalet
Apr 23, 1937·Science·S RobinsonD B Dill
Oct 27, 2007·International Journal of Sport Nutrition and Exercise Metabolism·Malcolm T WhiteheadMichael J Webster
Jun 26, 2012·Journal of Strength and Conditioning Research·Malcolm T WhiteheadMichael J Webster
Jul 16, 2013·Current Sports Medicine Reports·Paul D ThompsonUNKNOWN American College of Sports Medicine
Feb 18, 2014·Journal of Strength and Conditioning Research·Cory W BaumannBenjamin T Corona

❮ Previous
Next ❯

Citations

Oct 21, 2016·Journal of Exercise Nutrition & Biochemistry·Cory W Baumann, Dongmin Kwak
Jan 5, 2019·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Tyler D MartinGeoffrey M Hudson

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Journal of Strength and Conditioning Research
Cory W BaumannJ Andrew Doyle
International Journal of Sport Nutrition and Exercise Metabolism
Michael GleesonPedro Tauler
Pflügers Archiv : European journal of physiology
E HumpelerP Pohl
© 2021 Meta ULC. All rights reserved