Johanna Porst

Profil

• 24. Sportwissenschaftlicher Hochschultag der Deutschen Vereinigung für Sportwissenschaft

  Quelle ↗

  Förderer: DFG sonstige Programme Zeitraum: 09/2019 - 09/2019 Projektleitung: Prof. Dr. Bernd Wolfarth, Johanna Porst

• 24. Sportwissenschaftlicher Hochschultag der Deutschen Vereinigung für Sportwissenschaft

  Quelle ↗

  Zeitraum: 09/2019 - 09/2019 Projektleitung: Johanna Porst, Prof. Dr. Bernd Wolfarth

• dvs-Nachwuchsworkshop

  Quelle ↗

  Zeitraum: 09/2019 - 09/2019 Projektleitung: Johanna Porst, Prof. Dr. Bernd Wolfarth

• Deutsche Sportjugend

  PT

  7 Treffer53.7%
  • Der Sportverein als attraktive Lebenswelt im Aufwachsen von Kindern und Jugendlichen? - Teilprojekt im Rahmen von Move for Health
    P

    53.7%

• MSB Research, Development and Innovation gGmbH

  P

  3 Treffer52.5%
  • FOR 5177/2: Korrelation der Leistungsfähigkeit der Lendenwirbelsäule mit klinischen Outcomes nach einer gezielten Behandlung bei Patienten mit unteren Rückenschmerzen (TP 04)
    P

    52.5%

• Zoologischer Garten Berlin AG

  PT

  3 Treffer50.5%
  • Tiere zum Sprechen bringen. Logistik, Wissenschaft, Präsentation
    P

    50.5%

• BGG Berliner Gesellschaft für Großaquarien mbH

  P

  4 Treffer50.2%
  • Entwicklung einer kamerabasierten Lösung für die Detektion des Bewegungsverhaltens und die Bestimmung des Längen- und Massenwachstums
    P

    50.2%

• cubeoffice GmbH & Co.KG

  P

  4 Treffer50.2%
  • Entwicklung einer kamerabasierten Lösung für die Detektion des Bewegungsverhaltens und die Bestimmung des Längen- und Massenwachstums
    P

    50.2%

• NVIDIA GmbH

  P

  1 Treffer49.9%
  • EU: Simulation in Multiscale Physical and Biological Systems (STIMULATE)
    P

    49.9%

• International Business Machines Corporation Research GmbH

  P

  4 Treffer49.9%
  • EU: Simulation in Multiscale Physical and Biological Systems (STIMULATE)
    P

    49.9%
  • EU: Bottom-Up Generation of atomicalLy Precise syntheTIc 2D MATerials for High Performance in Energy and Electronic Applications – A Multi-Site Innovative Training Action (ULTIMATE)
    P

    42.8%

• Magwel NV

  P

  1 Treffer49.9%
  • EU: Simulation in Multiscale Physical and Biological Systems (STIMULATE)
    P

    49.9%

• Science & Startups Berlin

  T

  3 Treffer49.4%
  • Zuwendung im Rahmen des Programms „exist – Existenzgründungen aus der Wissenschaft“ aus dem Bundeshaushalt, Einzelplan 09, Kapitel 02, Titel 68607, Haushaltsjahr 2026, sowie aus Mitteln des Europäischen Strukturfonds (hier Euro-päischer Sozialfonds Plus – ESF Plus) Förderperiode 2021-2027 – Kofinanzierung für das Vorhaben: „exist Women“
    T

    49.4%

• HMU Research, Development und Innovation Erfurt gGmbH

  P

  2 Treffer49.3%
  • FOR 5187: Personalisierte Psychotherapie für Patient*innen mit fehlendem Behandlungserfolg: Mechanismen, prädiktive Marker und klinische Anwendung
    P

    49.3%

• Change in Latent Gray-Matter Structural Integrity Is Associated With Change in Cardiovascular Fitness in Older Adults Who Engage in At-Home Aerobic Exercise

  2022

  Frontiers in Human Neuroscience · 11 Zitationen · DOI

  In aging humans, aerobic exercise interventions have been found to be associated with more positive or less negative changes in frontal and temporal brain areas, such as the anterior cingulate cortex (ACC) and hippocampus, relative to no-exercise control conditions. However, individual measures such as gray-matter (GM) probability may afford less reliable and valid conclusions about maintenance or losses in structural brain integrity than a latent construct based on multiple indicators. Here, we established a latent factor of GM structural integrity based on GM probability assessed by voxel-based morphometry, magnetization transfer saturation, and mean diffusivity. Based on this latent factor, we investigated changes in structural brain integrity during a six-month exercise intervention in brain regions previously reported in studies using volumetric approaches. Seventy-five healthy, previously sedentary older adults aged 63-76 years completed an at-home intervention study in either an exercise group (EG; <i>n</i> = 40) or in an active control group (ACG; <i>n</i> = 35). Measures of peak oxygen uptake (VO₂peak) taken before and after the intervention revealed a time-by-group interaction, with positive average change in the EG and no reliable mean change in the ACG. Significant group differences in structural brain integrity changes were observed in the right and left ACC, right posterior cingulate cortex (PCC), and left juxtapositional lobule cortex (JLC). In all instances, average changes in the EG did not differ reliably from zero, whereas average changes in the ACG were negative, pointing to maintenance of structural brain integrity in the EG, and to losses in the ACG. Significant individual differences in change were observed for right ACC and left JLC. Following up on these differences, we found that exercising participants with greater fitness gains also showed more positive changes in structural integrity. We discuss the benefits and limitations of a latent-factor approach to changes in structural brain integrity, and conclude that aerobic fitness interventions are likely to contribute to brain maintenance in old age.

• Telemedicine-based exercise intervention in cancer survivors: a non-randomized controlled trial

  2024

  Scientific Reports · 7 Zitationen · DOI

  Cancer survivors (CS) often experience treatment-related side effects, such as fatigue, and have reduced physical function. Regular physical activity has been demonstrated to reduce these symptoms and improve cardiopulmonary fitness. Digital solutions are needed to optimize exercise options for CS in aftercare, especially given the significant limitations during the Covid-19 pandemic. This two-armed, non-randomized, controlled intervention study for CS aims to investigate whether a telemedicine-based exercise intervention is as effective as the current standard of care for oncological exercise therapy in aftercare. Patients in the intervention group (n = 61) performed a telemedicine-based exercise program (TE) and patients in the control group (n = 31) participated in an existing rehabilitation sports group (RG) over a six-month intervention period. The primary outcome was cardiopulmonary fitness measured by VO₂peak; secondary outcomes included quality of life (QoL), fatigue, and physical activity. A non-inferiority analysis was performed with a predefined non-inferiority margin for relative VO₂peak of -1.50 ml/min/kg. Although TE demonstrated a slight advantage in relative VO₂peak compared to RG (adjusted mean difference of 0.55 ml/min/kg [95% CI: -2.74; 3.84]), the non-inferiority was not statistically significant. Nevertheless, the implementation of a telemedicine-based exercise intervention indicates that individual patients respond well to this type of exercise program and benefit from the intervention, particularly in terms of QoL. Finding an individualized program for each cancer survivor is the overarching goal. A telemedicine-based exercise intervention may be a promising option, particularly for younger patients.

• No Evidence for a Boost in Psychosocial Functioning in Older Age After a 6-Months Physical Exercise Intervention

  2022

  Frontiers in Human Neuroscience · 4 Zitationen · DOI

  The beneficial effects of physical exercise on physical health and cognitive functioning have been repeatedly shown. However, evidence of its effect on psychosocial functioning in healthy adults is still scarce or inconclusive. One limitation of many studies examining this link is their reliance on correlational approaches or specific subpopulations, such as clinical populations. The present study investigated the effects of a physical exercise intervention on key factors of psychosocial functioning, specifically well-being, stress, loneliness, and future time perspective. We used data from healthy, previously sedentary older adults (<i>N</i> = 132) who participated in a 6-month at-home intervention, either engaging in aerobic exercise or as part of a control group who participated in foreign language-learning or reading of selected native-language literature. Before and after the intervention, comprehensive cardiovascular pulmonary testing and a psychosocial questionnaire were administered. The exercise group showed significantly increased fitness compared to the control group. Contrary to expectations, however, we did not find evidence for a beneficial effect of this fitness improvement on any of the four domains of psychosocial functioning we assessed. This may be due to pronounced stability of such psychological traits in older age, especially in older adults who show high levels of well-being initially. Alternatively, it may be that the well-documented beneficial effects of physical exercise on brain structure and function, as well as cognition differ markedly from beneficial effects on psychosocial functioning. While aerobic exercise may be the driving factor for the former, positive effects on the latter may only be invoked by other aspects of exercise, for example, experiences of mastery or a feeling of community.

• Aerobic exercise is associated with region-specific changes in volumetric, tensor-based, and fixel-based measures of white matter integrity in healthy older adults

  2023

  Neuroimage Reports · 3 Zitationen · DOI

  White matter integrity and cognition have been found to decline with advancing adult age. Aerobic exercise may be effective in counteracting these declines. Generally, white matter integrity has been quantified using a volumetric measure (WMV) and with tensor-based parameters, such as fractional anisotropy (FA) and mean diffusivity (MD), the validity of which appears to be compromised in the presence of crossing fibers. Fixel-based analysis techniques claim to overcome this problem by yielding estimates of fiber density (FD), cross-section (FC), and their product (FDC) in multiple directions per voxel. In a sample of 61 healthy older adults (63-76 years old), we quantified changes in white matter integrity following an aerobic exercise intervention with the commonly used volumetric and tensor-based metrics (WMV, FA, MD) and with fixel-based metrics (FD, FC, FDC). We investigated the associations of changes in these white matter parameters with changes in cardiovascular fitness and Digit Symbol Substitution task (DSST) performance, a marker of perceptual speed. In line with previous findings, we observed maintained WMV in the corpus callosum of exercisers, and positive change-change correlations between WMV and fitness, and between WMV and perceptual speed. For FA and MD, group differences in change opposite to those hypothesized were found in the corpus callosum, posterior corona radiata, and superior longitudinal fasciculus at an uncorrected significance threshold. Likewise, regions in superficial WM in the prefrontal cortex showed group differences in FD and FDC change, uncorrected, with more positive change in controls and more negative change in exercisers. Finally, changes in FD and FDC were found to be inversely correlated to changes in fitness and DSST performance. The present results corroborate previous findings of WMV changes, but cast doubt on current physiological interpretations of both tensor-based and fixel-based indicators of white matter properties in the context of exercise intervention studies.

• Vamos en bici: Study protocol of an investigation of cognitive and neural changes following language training, physical exercise training, or a combination of both

  2022

  bioRxiv (Cold Spring Harbor Laboratory) · 2 Zitationen · DOI

  Abstract As the relative number of elderly people as well as the average life expectancy increases, identifying potential means to alter the ongoing trajectory of aging and specifically the trajectory of cognitive performance is of great importance. Some modifiable lifestyle factors, such as physical and cognitive activity, have shown positive effects on cognition and brain structure, and the combination of the two might even show a boosted, interactive effect. In this study protocol, we describe in detail our data which was acquired to explore how cognitive stimulation in the form of acquiring a new language, physical exercise on stationary bikes or the combination of the two interventions affect brain structure, cognitive performance, and psychosocial functioning. One-hundred and forty-two older healthy adults (63–78 years) were randomly assigned to one of four six-month intervention programs, comprising (a) foreign language learning, (b) physical exercise training on a bicycle ergometer, (c) a combination of language learning and physical exercise, or (d) a book club (serving as an active control condition). We collected a rich neuroimaging data set, comprising T 1 -weighted structural, resting state functional, high resolution hippocampal, myelin water fraction, diffusion-weighted, arterial spin labeling, and multi-parameter images. Using a cognitive battery, we collected data from the domains of episodic memory, working memory, perceptual speed, and fluid intelligence. We performed comprehensive physical assessments including cardiopulmonary exercise testing, and additionally collected data on psychosocial functioning (e.g., well-being, perceived stress, control beliefs). We assume that physical activity boosts brain plasticity per se by inducing structural and neurochemical changes in brain regions that are important for learning and memory and therefore may facilitate the effects of cognitive training. (269 words)

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Name

Johanna Porst

Fakultät

Kultur-, Sozial- und Bildungswissenschaftliche Fakultät

Institut

Institut für Sportwissenschaft

Arbeitsgruppe

Sportmedizin

Telefon

+49 30 2093-46058

HU-FIS-Profil

Quelle ↗

Zuletzt gescrapt

26.4.2026, 01:10:36