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Int J Sports Med 1993; 14: S29-S31
DOI: 10.1055/s-2007-1021220
© Georg Thieme Verlag Stuttgart · New York

Performance and Blood Lactate on Gjessing and Concept II Rowing Ergometers

W. Lormes1 , R. Buckwitz2 , H. Rehbein3 , J. M. Steinacker1
  • 1Abteilung Sport- und Leistungsmedizin, Medizinische Universitäts- und Poliklinik, Universität Ulm, Ulm, Germany
  • 2Olympiastützpunkt Berlin, Sportforum, Fritz-Lesch-Str. 29, Berlin, Germany
  • 3Institut Forschung und Entwicklung von Sportgeräten (FES), Niebergallstr. 35, Berlin, Germany
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Publication Date:
14 March 2008 (online)

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Abstract

The Gjessing (GE) and the wind resistance (Concept II, CII) rowing ergometers were compared in 11 trained subjects during incremental exercise. Maximum power was 255 (200-370) W on GE, but 294 (204-393) W in CII (median and range, p<0.05). If power was directly measured by a strain gauge and a displacement transducer in the CII, a 5.1%(3.2%-7.8%) higher maximum performance was obtained (314 [223-413] W, p<0.05). Maximum stroke rates were higher in GE (33 [27-37]/min) than in CII (29 [24-35]/min, NS). Blood lactate increased faster with work rate and lactic anaerobic threshold was therefore lower in GE. Blood lactate was higher for every heart rate for GE compared to CIL This suggests higher anaerobic effort in GE rowing.

Key words

Biomechanics - anaerobic threshold