Consideration of the estimating method of oxygen demand in rowing

• SHIRAI Yusuke

  Graduate School of Comprehensive Human Sciences, University of Tsukuba

• NABEKURA Yoshiharu

  Faculty of Health and Sport Science, University of Tsukuba

Bibliographic Information

Other Title

• ローイング時の酸素需要量の推定方法に関する検討

Abstract

Oxygen demand (OD) during supramaximal exercise is estimated by using linear relationship between power output (PO) and VO₂ in submaximal exercises. In rowing, stroke rate (SR) rises curvilinearly against PO and achieves to about twofold in supramaximal exercise compared with submaximal. However it’s not considered in estimating. The aim of this study was to investigate the estimating method of OD in rowing with considering the influence of increasing SR. Ten male collegiate rowers (age: 20.6± 2.8 yrs, height: 174.7± 4.9cm, weight: 71.1±8.9 kg) participated in this study. They performed submaximal exercise tests in normal condition (N-Con) and increased SR condition (SR-Con) to estimate OD during 90 seconds rowing test that rowed in same PO of their 2000 m time trial. In N-Con, subjects freely chose SR in each stage. In SR-Con, SR was fixed as increasing linearly against PO. Moreover, we tried to correct OD by using physical activity level that determined by integrals of absolute value of the accelerometer output (IAA). OD estimated in SR-Con (OD_SR:7.0 ± 0.8 lO₂Eq) and corrected by IAA (OD_IAA: 7.0 ± 0.7 lO₂Eq) were significantly larger than OD in N-Con (OD: 6.6 ± 0.8 lO₂Eq). In addition, there was not significant difference between OD_SR and OD_IAA, and they showed significant higher intra-class correlation coefficient (ICC (1, 1) = 0.93). These results suggested that OD in rowing is able to be corrected by fixing SR as linear increasing against PO, or using IAA.

Journal

• Japan Journal of Test and Measurement in Health and Physical Education

  Japan Journal of Test and Measurement in Health and Physical Education 15 (0), 11-23, 2016

  Japanese Society of Test and Measurement in Health and Physical Education

Keywords

• stroke rate
• internal work
• accelerometer sensor
• physical activity

Details

• CRID: 1390282680457572096
• NII Article ID: 130005420872
• DOI: 10.14859/jjtehpe.15.11
• ISSN: 13471309
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed