ISSN:
1439-6327
Keywords:
Oxygen consumption
;
Heart rate
;
Work efficiency
;
Rowing
;
Exercise testing
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary Oxygen consumption ( $$\dot V_{O_2 } $$ ) when rowing was determined on a mechanically braked rowing ergometer (RE) with an electronic measuring device. $$\dot V_{O_2 } $$ was measured by an open spirometric system. The pneumotachograph valve was fixed to the sliding seat, thus reducing movement artefacts. A multi-stage test was performed, beginning with a work load of 150 W and increasing by 50 W every 2 minutes up to exhaustion. Serum lactate concentrations were determined in a 30 s break between the work stages. 61 examinations of oarsmen performing at maximum power of 5 W · kg−1 or more were analysed. $$\dot V_{O_2 } $$ and heart rate (HR) for each working stage were measured and the regression line of $$\dot V_{O_2 } $$ on the work load (P) and an estimation error (sxy) were calculated: $$\dot V_{O_2 } = 12.5 \cdot P + 415.2$$ (ml · min−1) (Sxy = ± 337 ml,r = 0.98) Good reproducibility was found in repeated examinations. Similar spiroergometry was carried out on a bicycle ergometer (BE) with 10 well trained rowers and 6 trained cyclists. $$\dot V_{O_2 } $$ of rowing was about 600 ml · min−1 higher than for bicycling in the submaximal stages for both groups. The $$\dot V_{O_{_2 max} } $$ of RE exercise was 2.6% higher than for oarsmen on BE, and the cyclists reached a greater $$\dot V_{O_2 } $$ on BE than the oarsmen. No differences were found between RE and BE exercise heart rate. The net work efficiency when rowing was 19% for both groups, experienced and inexperienced: when cycling it was 25% for cyclists and 23% for oarsmen.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02343794
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