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525 results on '"Platen, Petra"'

1. Wissenschaftliches Konzept und Struktur des Netzwerkes

Author

Mayer, Frank, Arampatzis, Adamantios, Banzer, Winfried, Beck, Heidrun, Brüggemann, Gert-Peter, Hasenbring, Monika, Kellmann, Michael, Kleinert, Jens, Schiltenwolf, Marcus, Schmidt, Hendrik, Schneider, Christian, Stengel, Dirk, Wippert, Pia-Maria, Platen, Petra, Mayer, Frank, editor, Arampatzis, Adamantios, editor, Banzer, Winfried, editor, Platen, Petra, editor, and Schneider, Christian, editor

Published
2024
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11. Cross-Sectional Association between Level of School Sports and Different Cognitive Parameters in Schoolchildren, Considering Multiple Covariates

Author

Drozdowska, Alina, Jendrusch, Gernot, Platen, Petra, Lücke, Thomas, Kersting, Mathilde, and Sinningen, Kathrin

Abstract

The objective of this study was to investigate the association between specified levels of physical education (PE) at school and different parameters of cognition in boys and girls, considering potential covariates. Baseline data from a crossover nutrition intervention study were used for a secondary analysis of 247 schoolchildren (37% girls). Participants were children from the fifth and sixth grade with an "advanced" (5-6 hr) or "regular" (3 hr) level of PE a week, without random allocation. Using three computerized tasks, cognition data were collected under usual school conditions. An advanced level of PE at school was associated with better overall cognitive performance, specifically in response speed and accuracy when controlling for lunch conditions. Girls attending advanced-PE classes showed the best performance. The potential covariates explained little about cognitive variability. Given the cognitive differences between boys and girls, future research is warranted to replicate these findings by measuring motor skills.

Published
2022
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37. Tissue Oxygenation During Exercise Measured with NIRS: Reproducibility and Influence of Wavelengths

Author

Gerz, Erwin, Geraskin, Dmitri, Franke, Julia, Platen, Petra, Steimers, André, Kohl-Bareis, Matthias, Cohen, Irun R., Series Editor, Lajtha, Abel, Series Editor, Paoletti, Rodolfo, Series Editor, Lambris, John D., Series Editor, Van Huffel, Sabine, editor, Naulaers, Gunnar, editor, Caicedo, Alexander, editor, Bruley, Duane F., editor, and Harrison, David K., editor

Published
2013
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38. Effectiveness and mechanisms of a multimodal treatment for low back pain: a pragmatic matched cohort study

Author

Schäfer, Robin, primary, Niederer, Daniel, additional, Levenig, Claudia, additional, Hasenbring, Monika, additional, Tas, Thomas, additional, Fett, Daniela, additional, Trompeter, Katharina, additional, Haag, Thore, additional, Schneider, Christian, additional, Floessel, Philipp, additional, Beck, Heidrun, additional, Schiltenwolf, Marcus, additional, Engel, Tilman, additional, Mayer, Frank, additional, and Platen, Petra, additional

Published
2022
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45. Effects of oral contraceptive use on muscle strength, muscle thickness, and fiber size and composition in young women undergoing 12 weeks of strength training

Author

Sung, Eunsook (Dr.), Han, Ahreum (Dr.), Hinrichs, Timo (PD Dr. med.), Vorgerd, Matthias (Prof. Dr. med.), and Platen, Petra (Prof. Dr. med.)

Subjects
ddc:796
Abstract

\(\bf Background:\) It is suspected that hormonal fluctuations during menstruation may cause different responses to strength training in women who use oral contraceptives (OC) versus those who do not. However, previous studies that investigated the existence of such differences produced conflicting results. In this study, we hypothesized that OC use has no effect on muscle strength and hypertrophy among women undergoing strength training. Thus, we compared the differences in muscle strength and thickness among women who used OCs and those who did not. \(\bf Methods:\) We investigated the influence of OC use on muscle strength \((F_{max})\), muscle thickness (Mtk), type 1-to-type 2 muscle fiber (NO) ratio, muscle fiber thickness (MFT), and nuclear-to-fiber (N/F) ratio. Seventy-four healthy young women (including 34 who used OCs and 40 who did not) underwent 12 weeks of submaximal strength training, after which \(F_{max}\) was evaluated using a leg-press machine with a combined force and load cell, while Mtk was measured using real-time ultrasonography. Moreover, the NO ratio, MFT, and N/F ratio were evaluated using muscle needle biopsies. \(\bf Results:\) Participants in the non-OC and OC groups experienced increases in \(F_{max}\) (+ 23.30 \(\pm\) 10.82 kg and + 28.02 \(\pm\) 11.50 kg respectively, \(\it p\) = 0.073), Mtk (+ 0.48 \(\pm\) 0.47 \(cm^{2}\) and + 0.50 \(\pm\) 0.44 \(cm^{2}\) respectively, \(\it p\) = 0.888), \(F_{max}\)/Mtk (+ 2.78 \(\pm\) 1.93 kg/cm2 and + 3.32 \(\pm\) 2.37 kg/\(cm^{2}\) respectively, \(\it p\) = 0.285), NO ratio (type 2 fibers: + 1.86 \(\pm\) 6.49% and − 4.17 \(\pm\) 9.48% respectively, \(\it p\) = 0.169), MFT (type 2 fibers: + 7.15 \(\pm\) 7.50 \(\mu\)m and + 4.07 \(\pm\) 9.30 \(\mu\)m respectively, \(\it p\) = 0.435), and N/F ratio (+ 0.61 \(\pm\) 1.02 and + 0.15 \(\pm\) 0.97 respectively, \(\it p\) = 0.866) after training. There were no significant differences between the non-OC and OC groups in any of these parameters (\(\it p\) > 0.05). \(\bf Conclusions:\) The effects of 12 weeks of strength training on Fmax, muscle thickness, muscle fiber size, and composition were similar in young women irrespective of their OC use.

Published
2022

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