Detraining decreases Hbmass of triathletes

A. Eastwood, P. C. Bourdon, K. R. Snowden, C. J. Gore

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Haemoglobin mass (Hbmass) determination using CO rebreathing may assist to detect illegal blood doping practices, however variations in Hbmass with periods of intensive training and detraining must be quantified. This study aimed to determine the effect of a 30-day period of detraining on Hbmass in ultra-endurance triathletes. 9 male recreational triathletes (29-44 years) participated in the study. Hbmass was assessed using CO rebreathing 30 days and 10 days before an ultra-endurance triathlon and after ~10, 20 and 30 days of detraining following the race. VO2max was assessed 10 days before the race and also after the 30-day detraining period, which consisted of an 87% reduction in training hours. After 30-days of detraining there was a 3.1% decrease in mean Hb mass from 86899 to 84094 g, (p=0.03), and a 4.7% decrease in mean VO2max from 4.830.29 to 4.610.41 L/min as well as a 2.8% increase of body mass from 75.16.4 to 77.16.1 kg and a 28% increase in skinfold total from 43.914.2 to 55.114.0 mm. Individual decreases in Hbmass following detraining would need to be considered if using Hbmass for anti-doping purposes.

Original languageEnglish
Pages (from-to)253-257
Number of pages5
JournalInternational Journal of Sports Medicine
Volume33
Issue number4
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

Hemoglobins
Carbon Monoxide
Doping in Sports

Cite this

Eastwood, A., Bourdon, P. C., Snowden, K. R., & Gore, C. J. (2012). Detraining decreases Hbmass of triathletes. International Journal of Sports Medicine, 33(4), 253-257. https://doi.org/10.1055/s-0031-1291184
Eastwood, A. ; Bourdon, P. C. ; Snowden, K. R. ; Gore, C. J. / Detraining decreases Hbmass of triathletes. In: International Journal of Sports Medicine. 2012 ; Vol. 33, No. 4. pp. 253-257.
@article{85f5db8151d24413932bad5c86ac13ae,
title = "Detraining decreases Hbmass of triathletes",
abstract = "Haemoglobin mass (Hbmass) determination using CO rebreathing may assist to detect illegal blood doping practices, however variations in Hbmass with periods of intensive training and detraining must be quantified. This study aimed to determine the effect of a 30-day period of detraining on Hbmass in ultra-endurance triathletes. 9 male recreational triathletes (29-44 years) participated in the study. Hbmass was assessed using CO rebreathing 30 days and 10 days before an ultra-endurance triathlon and after ~10, 20 and 30 days of detraining following the race. VO2max was assessed 10 days before the race and also after the 30-day detraining period, which consisted of an 87{\%} reduction in training hours. After 30-days of detraining there was a 3.1{\%} decrease in mean Hb mass from 86899 to 84094 g, (p=0.03), and a 4.7{\%} decrease in mean VO2max from 4.830.29 to 4.610.41 L/min as well as a 2.8{\%} increase of body mass from 75.16.4 to 77.16.1 kg and a 28{\%} increase in skinfold total from 43.914.2 to 55.114.0 mm. Individual decreases in Hbmass following detraining would need to be considered if using Hbmass for anti-doping purposes.",
keywords = "anti doping, erythropoesis, training",
author = "A. Eastwood and Bourdon, {P. C.} and Snowden, {K. R.} and Gore, {C. J.}",
year = "2012",
doi = "10.1055/s-0031-1291184",
language = "English",
volume = "33",
pages = "253--257",
journal = "International Journal of Sports Medicine",
issn = "0172-4622",
publisher = "Georg Thieme Verlag",
number = "4",

}

Eastwood, A, Bourdon, PC, Snowden, KR & Gore, CJ 2012, 'Detraining decreases Hbmass of triathletes', International Journal of Sports Medicine, vol. 33, no. 4, pp. 253-257. https://doi.org/10.1055/s-0031-1291184

Detraining decreases Hbmass of triathletes. / Eastwood, A.; Bourdon, P. C.; Snowden, K. R.; Gore, C. J.

In: International Journal of Sports Medicine, Vol. 33, No. 4, 2012, p. 253-257.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Detraining decreases Hbmass of triathletes

AU - Eastwood, A.

AU - Bourdon, P. C.

AU - Snowden, K. R.

AU - Gore, C. J.

PY - 2012

Y1 - 2012

N2 - Haemoglobin mass (Hbmass) determination using CO rebreathing may assist to detect illegal blood doping practices, however variations in Hbmass with periods of intensive training and detraining must be quantified. This study aimed to determine the effect of a 30-day period of detraining on Hbmass in ultra-endurance triathletes. 9 male recreational triathletes (29-44 years) participated in the study. Hbmass was assessed using CO rebreathing 30 days and 10 days before an ultra-endurance triathlon and after ~10, 20 and 30 days of detraining following the race. VO2max was assessed 10 days before the race and also after the 30-day detraining period, which consisted of an 87% reduction in training hours. After 30-days of detraining there was a 3.1% decrease in mean Hb mass from 86899 to 84094 g, (p=0.03), and a 4.7% decrease in mean VO2max from 4.830.29 to 4.610.41 L/min as well as a 2.8% increase of body mass from 75.16.4 to 77.16.1 kg and a 28% increase in skinfold total from 43.914.2 to 55.114.0 mm. Individual decreases in Hbmass following detraining would need to be considered if using Hbmass for anti-doping purposes.

AB - Haemoglobin mass (Hbmass) determination using CO rebreathing may assist to detect illegal blood doping practices, however variations in Hbmass with periods of intensive training and detraining must be quantified. This study aimed to determine the effect of a 30-day period of detraining on Hbmass in ultra-endurance triathletes. 9 male recreational triathletes (29-44 years) participated in the study. Hbmass was assessed using CO rebreathing 30 days and 10 days before an ultra-endurance triathlon and after ~10, 20 and 30 days of detraining following the race. VO2max was assessed 10 days before the race and also after the 30-day detraining period, which consisted of an 87% reduction in training hours. After 30-days of detraining there was a 3.1% decrease in mean Hb mass from 86899 to 84094 g, (p=0.03), and a 4.7% decrease in mean VO2max from 4.830.29 to 4.610.41 L/min as well as a 2.8% increase of body mass from 75.16.4 to 77.16.1 kg and a 28% increase in skinfold total from 43.914.2 to 55.114.0 mm. Individual decreases in Hbmass following detraining would need to be considered if using Hbmass for anti-doping purposes.

KW - anti doping

KW - erythropoesis

KW - training

UR - http://www.scopus.com/inward/record.url?scp=84859433897&partnerID=8YFLogxK

U2 - 10.1055/s-0031-1291184

DO - 10.1055/s-0031-1291184

M3 - Article

VL - 33

SP - 253

EP - 257

JO - International Journal of Sports Medicine

JF - International Journal of Sports Medicine

SN - 0172-4622

IS - 4

ER -