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Training-induced muscle adaptations during competitive preparation in elite female rowers

van der Zwaard, Stephan; Koppens, Tommie F.P.; Weide, Guido; Levels, Koen; Hofmijster, Mathijs J.; de Koning, Jos J.; Jaspers, Richard T.

Training-induced adaptations in muscle morphology, including their magnitude and individual variation, remain relatively unknown in elite athletes. We reported changes in rowing performance and muscle morphology during the general and competitive preparation phases in elite rowers. Nineteen female rowers …

2021-12AlgemeenArtikel

Fysieke belasting meten in het ALO-onderwijs

Heleen ter Kuile (Student); Jorine Koopman (Begeleider)

Onderzoek van Van Beijsterveldt et al. (2014) toont aan dat eerstejaarsstudenten aan de Academie voor Lichamelijke Opvoeding (ALO) in Amsterdam gemiddeld 7 keer vaker een blessure oplopen dan reguliere sporters in Nederland. Om deze reden is de ALO aan het kijken hoe het aantal fysieke klachten verminderd …

2021GezondheidBachelor

Real-time feedback on mechanical power output

Lintmeijer, Lotte L; Knoek van Soest, A J; Robbers, Freek S; Hofmijster, Mathijs J; Beek, Peter J

PURPOSE: Athletes require feedback in order to comply with prescribed training programs designed to optimize their performance. In rowing, current feedback parameters on intensity are inaccurate. Mechanical power output is a suitable objective measure for training intensity, but due to movement restrictions …

2019-03-01AlgemeenArtikel

Critical determinants of combined sprint and endurance performance

van der Zwaard, Stephan; van der Laarse, Willem J; Weide, Guido; Bloemers, Frank W; Hofmijster, Mathijs J; Levels, Koen; Noordhof, Dionne A; de Koning, Jos J; de Ruiter, Cornelis J; Jaspers, Richard T

Optimizing physical performance is a major goal in current physiology. However, basic understanding of combining high sprint and endurance performance is currently lacking. This study identifies critical determinants of combined sprint and endurance performance using multiple regression analyses of physiologic …

2018-04AlgemeenArtikel

Mechanical power output in rowing should not be determined from oar forces and oar motion alone

Hofmijster, Mathijs J.; Lintmeijer, Lotte L.; Beek, Peter J.; van Soest, A. J. Knoek

Mechanical power output is a key performance-determining variable in many cyclic sports. In rowing, instantaneous power output is commonly determined as the dot product of handle force moment and oar angular velocity. The aim of this study was to show that this commonly used proxy is theoretically flawed …

2018AlgemeenArtikel

Muscle volume is a critical determinant of rowing performance in Olympic rowers

van der Zwaard, Stephan; Weide, Guido; Levels, Koen; Eikelboom, Michelle; Noordhof, Dionne A.; Hofmijster, Mathijs J.; van der Laarse, Willem J.; de Ruiter, Cornelis J.; de Koning, Jos J.; Jaspers, Richard T.

2017-05AlgemeenConferentiebijdrage

Oxygenation threshold derived from near-infrared Spectroscopy

van der Zwaard, Stephan; Jaspers, Richard T.; Blokland, Ilse J.; Achterberg, Chantal; Visser, Jurrian M.; den Uil, Anne R.; Hofmijster, Mathijs J.; Levels, Koen; Noordhof, Dionne A.; de Haan, Arnold; de Koning, Jos J.; van der Laarse, Willem J.; de Ruiter, Cornelis J.

BACKGROUND: Near-infrared spectroscopy (NIRS) measurements of oxygenation reflect O2 delivery and utilization in exercising muscle and may improve detection of a critical exercise threshold. PURPOSE: First, to detect an oxygenation breakpoint (Δ[O2HbMb-HHbMb]-BP) and compare this breakpoint to ventilatory …

2016-09-15AlgemeenArtikel

Saddles and seats in animal and human sports

Back, Willem; Hofmijster, Mathijs

2016-01AlgemeenArtikel

Innovatie in sportprestatie

Hofmijster, Mathijs J.

Sport heeft een belangrijke rol in onze samenleving; onderzoek in en naar sport draagt bij aan het versterken van deze rol. In het Amsterdam Institute of Sport Science (AISS) werken Amsterdamse kennisinstellingen met elkaar en diverse sportorganisaties samen om sport en bewegen in al haar facetten te …

2016AlgemeenLezing

Rowers' on-water power output is commonly underestimated

Lintmeijer, L.L.; Hofmijster, M.J.; Beek, P.J.; Schulte Fischedick, G.A.; Zijlstra, P.J.; Soest, A.J.

2016AlgemeenConferentiebijdrage

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