uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Energy expenditure assessed by heart rate and doubly labeled water in young athletes
Unit for Preventive Nutrition at Novum, Department of Medical Nutrition/Biosciences, Karolinska Institutet, Stockholm, Sweden; Department of Physical Education and Health, Örebro University, Sweden.
Unit for Preventive Nutrition at Novum, Department of Medical Nutrition/Biosciences, Karolinska Institutet, Stockholm, Sweden.ORCID iD: 0000-0002-7165-279X
Department of Human Biology, Maastricht University, Maastricht, The Netherlands.
Unit for Preventive Nutrition at Novum, Department of Medical Nutrition/Biosciences, Karolinska Institutet, Stockholm, Sweden.
2002 (English)In: Medicine & Science in Sports & Exercise, ISSN 0195-9131, E-ISSN 1530-0315, Vol. 34, no 8, 1360-1366 p.Article in journal (Refereed) Published
Abstract [en]

PURPOSE: To compare total energy expenditure (TEE) estimated by the FLEX heart rate (HR) method with that measured by the doubly labeled water (DLW) technique in young speed skaters. We hypothesized that the accuracy of FLEX HR-estimated TEE would be affected by a) the definition of the FLEX HR and b) the type of training regimen.

METHODS: Eight young athletes (mean age 18.2 +/- 1.3 yr) underwent measurements during two 10-d training periods: an off-season period with voluntary training (predominantly running) and a preseason period mainly focused on skating technique training. TEE was measured simultaneously by the DLW and FLEX HR methods. FLEX HR1 was defined as the mean of the HRs during all resting calibration activities and the lowest HR during exercising calibration activities. FLEX HR2 was defined as the mean of the highest HR during resting activities and the lowest HR during exercising.

RESULTS: ANOVA showed that FLEX HR1 was significantly lower than FLEX HR2 (mean of both periods; 77 +/- 5 vs 84 +/- 6 beats.min(-1); P = 0.004). TEE values obtained by DLW were 16.8 +/- 3.8 and 16.9 +/- 2.9 MJ.d(-1) in the two periods, respectively. TEE values calculated from FLEX HR1 were 17.8 +/- 3.6 and 17.4 +/- 2.6 MJ.d(-1), and those from FLEX HR2 17.1 +/- 3.1 and 17.0 +/- 2.7 MJ.d-1, respectively. No significant period (P = 0.83) or method (P = 0.44) effect on TEE was observed.

CONCLUSION: FLEX HR-estimated TEE was not affected by the definition of the FLEX HR or by the type of training regimen as compared with TEE measured by the DLW method in young athletes.

Place, publisher, year, edition, pages
2002. Vol. 34, no 8, 1360-1366 p.
Keyword [en]
Flex heart rate; Physical activity; Speed skaters; Total energy expenditure
National Category
Sport and Fitness Sciences
Research subject
Sports Physiology/Medicine
Identifiers
URN: urn:nbn:se:uu:diva-304881DOI: 10.1097/00005768-200208000-00019ISI: 000177291000019PubMedID: 12165693Scopus ID: 2-s2.0-0036327314OAI: oai:DiVA.org:uu-304881DiVA: diva2:1034384
Available from: 2015-01-11 Created: 2016-10-11 Last updated: 2017-11-29

Open Access in DiVA

No full text

Other links

Publisher's full textPubMedScopus

Search in DiVA

By author/editor
Ekelund, UlfYngve, Agneta
In the same journal
Medicine & Science in Sports & Exercise
Sport and Fitness Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 317 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf