Stefan Schneider

Stefan Schneider
Deutsche Sporthochschule Köln | DSHS · University of the Sunshine Coast

Prof. Dr. Dr.

About

149
Publications
31,027
Reads
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2,574
Citations
Citations since 2016
56 Research Items
1644 Citations
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Introduction
Dr. Schneiders fundamental work interest is on exercise neuroscience in extreme environments and the interconnection of brain activity, sports and health. He is leading the ‘Centre of Space Physiology’ at the German Sport University. Beside his medical interest, Dr. Schneider holds a PhD in theology as well as an adjunct Professorship at University of the Sunshine Coast (AUS). Just recently he has been awarded with Germanys most renowned German Olympic Sports Confederations (DOSB) Science Award.
Additional affiliations
April 2013 - present
German Sport University, German Space Agency, Ludwig-Maximilians-University Munich
Position
  • Development and Validation of a Neurocognitive test battery for implementation on the Russian Segment of the International Space Station (ISS)
Description
  • Schneider S, Choukèr A, Johannes B. Funding under negotiation.
April 2012 - present
Deutsche Sporthochschule Köln
Position
  • Centre for Human Integrative Physiology in Space (CHIPS). Centre of excellence at the German Sport University Cologne.
Description
  • Schneider S, Strüder HK, Essfeld D, Hoffmann U, Kleinert J, Bock O. Funded by GSU: €853.200
June 2011 - present
German Sport University / German Space Agency
Position
  • The effects of artificial gravity provided by a short-arm human centrifuge on cortical activation patterns: A view on mental and cognitive aspects of artificial gravity as a countermeasure to weightlessness and confinement
Description
  • Schneider S, Brümmer V, Carnahan H, Askew CD, DeBoever P, Strüder HK. Funded by BMWI: €484.300
Education
July 2014 - January 2020
Deutsche Sporthochschule Köln
Field of study
  • Integrative Physiology
November 2012 - December 2015
University of the Sunshine Coast
Field of study
  • Exercise Science
June 2010 - December 2020
Center for Health and Integrative Physiology in Space (CHIPS)
Field of study
  • Space Life Sciences

Publications

Publications (149)
Article
Full-text available
Background: Preventive lifestyle strategies have shown promise to slow down or prevent age-related cognitive decline. However, evidence on the reciprocal longitudinal relationships between nutrition biomarkers and cognitive and physical performance is lacking. Studying nutritional, cognitive, and physical profiles over time may help to overcome thi...
Article
Full-text available
Purpose Our aim was to compare cerebrovascular and systemic vascular function between older adults with and without mild cognitive impairment (MCI), and to determine which measures of vascular function best predict the presence of MCI. Methods In 41 adults with MCI and 33 adults without MCI (control) we compared middle cerebral artery velocity (MC...
Article
Full-text available
Exercise could prevent physical and psychological deteriorations, especially during pandemic times of lock-down scenarios and social isolation. But to meet both, the common exercise protocols require optimization based on holistic investigations and with respect to underlying processes. This study aimed to explore individual chronic and acute effec...
Preprint
Full-text available
Exercise could prevent physical and psychological deteriorations, especially during pandemic times of lock-down scenarios and social isolation. But to meet both, the common exercise protocols require optimization based on holistic investigations and with respect to underlying processes. This study aimed to clarify individual chronic and acute effec...
Article
Full-text available
Introduction. Astronauts will encounter isolated, confined and extreme (ICE) conditions during future missions, and will have to be able to adapt. Until recently, however, few places on Earth could serve as acceptable space analogues (i.e., submarine and polar regions). The coronavirus disease-2019 (COVID-19)-related lockdowns around the globe prov...
Article
Full-text available
Aim: The aim of this pilot study was to examine the acute effect of a psychomotor intervention (PMI) on auditory-verbal memory, emotional state, and electrocortical activity recorded by electroencephalography on subjectively healthy older adults (sHE) and older adults diagnosed with mild cognitive impairment (MCIs). Methods: Eleven MCIs and 11 s...
Article
Full-text available
Exercise intervention studies in mild cognitive impairment (MCI), a prodromal stage of Alzheimer's disease (AD), have demonstrated inconsistent yet promising results. Addressing the limitations of previous studies, this trial investigated the effects of a 12-month structured exercise program on the progression of MCI. The NeuroExercise study is a m...
Article
Objective The analysis of event-related potentials (ERPs) is a useful tool to differentiate between healthy older adults, and individuals with mild cognitive impairment (MCI). Less is known about the ERPs’ sensitivity of differentiating between individuals with subjective cognitive impairment (SCI) and MCI, as early evidence indicates similar brain...
Article
Full-text available
Background Despite demographic change and increased life and health demands of the younger generations, numerous companies, especially small- and medium-sized enterprises (SMEs), continue to shy away from the quantitative and qualitative expansion of workplace health promotion (WHP) as a means of maintaining workability and employee loyalty. Objec...
Article
Full-text available
Introduction: Aging is associated with impaired cerebrovascular blood flow and function, attributed to reduced vasodilatory capacity of the cerebrovascular network. Older adults may also have an impaired relationship between changes in blood pressure and cerebral blood flow; however, previous reports conflict. This study aimed to compare the blood...
Article
Zusammenfassung Neben den motorischen Symptomen wie Rigor, Tremor, Bradykinese und posturale Instabilität führt Morbus Parkinson oftmals auch zu einer Beeinträchtigung der kognitiven Leistungsfähigkeit. Um dem kognitiven Abbau vorzubeugen, gewinnen Sport und Bewegung an Bedeutung. Allerdings sind ihre Effekte auf die Kognition bei Morbus Parkinson...
Article
Full-text available
Was Wählen-Gehen, schlaue Kinder und Den-Hund-Rausbringen gemeinsam haben..
Article
Purpose A number of studies has well described central cardiovascular changes caused by changing gravity levels as they occur e.g. during parabolic flight. limited data exists describing the effect of microgravity on the cerebrovascular system and brain perfusion. Methods In this study middle cerebral artery velocity (MCAv) of 16 participants was...
Chapter
Since the beginning of manned spaceflight, the challenge for space science is to avoid or minimize physiological degeneration processes of the musculoskeletal and cardiovascular system caused by missing gravity. With ongoing mission duration it becomes clear that weightlessness and isolation in space has an impact also on cognitive performance and...
Article
Background: Activity tracking devices gain popularity in research, which is due to their multiple features (e.g. heart rate monitor, step count) and easy handling. Nevertheless, many devices used for research are lacking validation of specific features. This study aimed to assess the validity of the Polar M400© activity tracker to count steps in o...
Article
Full-text available
The number of studies on work breaks and the importance of this subject is growing rapidly, with research showing that work breaks increase employees' wellbeing and performance and workplace safety. However, comparing the results of work break research is difficult since the study designs and methods are heterogeneous and there is no standard theor...
Article
Full-text available
FROM ANTARCTICA TO ALZHEIMERS – EXERCISE HELPS TO PREVENT COGNITIVE DECLINE INTRODUCTION Regular physical exercise has been proven to counteract physiological deconditioning caused by a sedentary lifestyle. More recently, human and animal studies have demonstrated that regular physical activity also targets brain function by increasing cognition a...
Article
In rehabilitation settings, exercise intensity is often monitored with Borg's rating of perceived exertion (RPE). However, previous studies showed that severe cognitive impairment may limit the usability of the RPE. The aim of this study was to assess the relationship between RPE and heart rate (HR), and to establish whether a target RPE can be use...
Article
Full-text available
The increasing demand of space flights requires a profound knowledge of the chronologic reactions of the human body to extreme conditions. Prior studies already have shown the adverse effects of long-term isolation on psycho-physiological well-being. The chronology of the effects and whether short-term isolation periods already lead to similar effe...
Article
Full-text available
Objective To investigate the brain-derived neurotrophic factor (BDNF) and cognitive response to a short bout of high-intensity aerobic exercise in older adults with mild cognitive impairment (MCI). Methods Participants were randomised to one of two testing schedules, completing either a standardised exercise test (group A) or a resting control con...
Article
Full-text available
Age-associated cognitive impairment in general and dementia in particular are a global concern. Preventive lifestyle strategies are highly used but there is a lack of information on the reciprocal relationships between nutrition biomarkers and measures of both cognitive and physical performance. To fill this gap of knowledge, the relationship betwe...
Article
Full-text available
Changes in gravity conditions have previously been reported to influence brain hemodynamics as well as neuronal activity. This paper attempts to identify a possible link between changes in brain blood flow and neuronal activity during microgravity. Middle cerebral artery flow velocity (MCAv) was measured using Doppler ultrasound. Brain cortical act...
Article
Previous studies showed a decrease in reaction time during the weightlessness phase of a parabolic flight. This effect was found to be stronger with increasing task complexity and was independent of previous experience of weightlessness as well as anti-nausea medication. Analysis of event related potentials showed a decreased amplitude of the N100-...
Article
Background: Supervised exercise training alleviates motor symptoms in people with Parkinson's disease (PD). However, the efficacy of exercise to improve nonmotor symptoms such as cognitive function is less well known. Objective: To systematically review evidence on the efficacy of different exercise modes (coordination exercise, resistance exerc...
Article
Purpose: Aging is associated with impaired cerebral blood flow (CBF) and increased risk of cerebrovascular disease. Acute increases in CBF during exercise may initiate improvements in cerebrovascular health, but the CBF response is diminished during continuous exercise in older adults. The effect of interval exercise for promoting increases in CBF...
Preprint
Concordia station in Antarctica is one of the most remote human outpost on Earth. Because of its geographical location, a winterover at Concordia shares a lot of stressors with a space mission. Following a recent study on the markers of sleep pressure during wakefulness on board of the International Space Station, we were investigating if long term...
Article
Full-text available
Purpose: The aim of the study was to test whether or not the arteriovenous oxygen concentration difference (avDO2) kinetics at the pulmonary (avDO2pulm) and muscle (avDO2musc) levels is significantly different during dynamic exercise. Methods: A re-analysis involving six publications dealing with kinetic analysis was utilized with an overall sam...
Article
Background: By 2030, about 74 million people will be diagnosed with dementia, and many more will experience subjective (SCI) or mild cognitive impairment (MCI). As physical inactivity has been identified to be a strong modifiable risk factor for dementia, exercise and physical activity (PA) may be important parameters to predict the progression fr...
Article
Full-text available
Prevention trials in subjects with mild cognitive impairment (MCI), especially lifestyle interventions, can be difficult to carry out, particularly the recruitment and retention of subjects. We experienced these challenges in our multi-site one-year exercise trial in MCI, NeuroExercise. Trial recruitment rates differed significantly across sites; t...
Article
Full-text available
Purpose: The aim of the study was to test for significant differences in non-invasively estimated muscle oxygen uptake ([Formula: see text]) kinetics, assessed by a square-wave exercise protocol (STEP) as well as by a time series approach with pseudorandom binary sequence (PRBS) work rate (WR) changes. Methods: Seventeen healthy and active indiv...
Article
Work breaks are known to have positive effects on employees’ health, performance, and safety. Using a sample of twelve employees working in a stressful and cognitively demanding working environment, this experimental field study examined how different types of work breaks (boxing, deep relaxation, and usual breaks) affect participants’ mood, cognit...
Article
The aim of this study was to determine the hemodynamic and neuroendocrinological responses to different levels and protocols of artificial gravity, especially in comparison to what is expected during a moderate bout of exercise. Ten male participants were exposed to artificial gravity using two different protocols: the first was a centrifugation pr...
Article
Full-text available
Objective: The aim of this study was to compare the influence of a class of aerobic exercise and an arts class on brain cortical activity and possible effects on cognitive performance. Subject and methods: Electroencephalography was used to record the electro cortical activity of sixteen (16) school children (8-10 years) before and after an aero...
Article
Purpose: The aim of the study was to compare the responses of pulmonary (V'O2pulm) and muscle (V'O2musc) oxygen uptake kinetics before (PRE) and after (POST) six weeks of endurance exercise training. Methods: Nine untrained individuals performed pseudo-random binary sequences work rate changes between 30W and 80W at PRE and POST training interve...
Article
Purpose: The goal of the study was to compare the kinetics responses of heart rate (HR) and pulmonary (V’O2pulm) and muscular (V’O2musc) oxygen uptake during dynamic leg exercise across different acute ambient temperature conditions in a climatic chamber. Methods: Thirteen physically healthy, active male volunteers performed pseudo-random binary se...
Article
Background: Recent research suggests using an imaginary version of the Timed Up and Go test (TUG) for a first assessment of cognitive impairment. By using the time difference between a real (TUGr) and an imagined (TUGi) TUG task, the objective of this study was to examine the effect of cognitive impairment on motor imagery ability. Methods: Fift...
Article
Research on motor behavioural processes preceding voluntary movements often refers to analysing the readiness potential (RP). For this, decades of studies used laboratory setups with controlled sports-related actions. Further, recent applied approaches focus on athlete-non-athlete comparisons, omitting possible effects of training history on RP. Ho...
Article
Full-text available
Background: Exercise interventions to prevent dementia and delay cognitive decline have gained considerable attention in recent years. Human and animal studies have demonstrated that regular physical activity targets brain function by increasing cognitive reserve. There is also evidence of structural changes caused by exercise in preventing or del...
Article
Purpose: The aim of the study was to compare the kinetics responses of heart rate (HR), pulmonary (V'O2pulm) and predicted muscular (V'O2musc) oxygen uptake between two different pseudo-random binary sequence (PRBS) work rate (WR) amplitudes both below anaerobic threshold. Methods: Eight healthy individuals performed two PRBS WR protocols implyi...
Article
Artificial gravity protocols are used to improve g-tolerance of aviators and discussed as countermeasure during prolonged space flight. Little is known about the impact of artificial gravity on the red blood cells (RBC). The purpose of the study was to test how artificial gravity affects RBC deformability and aggregation, which are important determ...
Article
Parabolic flights represent an important tool in space research to investigate zero gravity on airplanes. Research on these flights often target psychological and biological processes in humans to investigate if and how we can adapt to this unique environment. This research is costly, hard to conduct and clearly heavily relies on humans participati...
Article
Full-text available
Long-duration exercise has been linked with the psychological model of flow. It is expected that the flow experience is characterized by specific changes in cortical activity, especially a transient hypofrontality, which has recently been connected with an increase in cognitive performance post-exercise. Nevertheless, data on neuro-affective and ne...
Poster
In order to maintain and improve space mission safety and success, there has been growing interest in the effects of microgravity on cognitive processing. While findings today are quite inconsistent, those studies reporting a decrement in cognitive performance have not been able to distinguish between the direct influence of microgravity and any as...
Chapter
Spaceflight is known to include the risk for physiological deconditioning as well as mental impairments, endangering mission safety and success. While Space science primarily focussed on physical health in the past, mental health (i.e. cognitive performance and affective state) was widely neglected. Today, not only in Space but also exercise scienc...
Conference Paper
Introduction & Aims: Aging and age-related conditions such as Alzheimer’s disease are associated with a decline in cerebral blood flow (CBF). Exercise training is known to delay this age-effect and improve cerebrovascular health. CBF regulation during exercise is complex and may differ with age. Improved understanding of the factors that modulate C...
Article
Full-text available
Increasing evidence indicates that chronic stress, such as social isolation, plays an important role in the development of a variety of psychiatric and somatic disorders. Meanwhile, chronic stress imposed by prolonged isolation and confinement in the spacecraft is also one of the major concerns for the health of future interplanetary space traveler...
Book
This volume of the Series SpringerBriefs in Space Life Sciences summarizes the newest finding in the field of mental health and physiological exercise in Space. Currently two major challenges are impacting human health in the western societies, one being a move towards a sedentary society, the second one being longevity. Both have a considerable im...
Article
Full-text available
Introduction: Handcycling is a relatively new wheelchair sport that has gained increased popularity for people with lower limb disabilities. The aim of this study was to examine the effect of three different grip positions on physical parameters during handcycling in a laboratory setting. Methods: Twenty one able-bodied participants performed three...
Article
Beside its positive impact on physical health, exercise is indicated to positively affect cognitive performance based on a relocation of cortical activity. This study examined the influence of different types of breaks on cognitive performance and related cortical activity in office-based employees. Breaks were filled with exercise, resting or a us...
Article
Full-text available
Virtual reality environments are increasingly being used to encourage individuals to exercise more regularly, including as part of treatment those with mental health or neurological disorders. The success of virtual environments likely depends on whether a sense of presence can be established, where participants become fully immersed in the virtual...
Conference Paper
A previous study showed differences between post-exercise brain cortical activities dependent on exercise mode (Brümmer et al. 2011). Because a decrease of brain cortical activity was revealed following running exercise but not bicycling, arm-cranking or isometric strength exercise, it was hypothesized that exercise preference or adaptation might p...
Conference Paper
Full-text available
INTRODUCTION Long duration exercise has been linked with the psychological model of Flow. Flow describes a mental state, during which a person is fully immersed in the process of an action. It is expected that the Flow experience is going along with specific changes in cortical activity, especially a transient hypofrontality which has recently been...
Article
Full-text available
Exposure to artificial gravity (AG) at different G loads and durations on human centrifuges has been shown to improve orthostatic tolerance in men. However, the effects on women and of an individual-specific AG training protocol on tolerance are not known. We examined the effects of 90 minutes of AG vs. 90 minutes of supine rest on the orthostatic...
Article
Full-text available
Introduction: Mental impairments, including deterioration of mood and cognitive performance, are known to occur during isolation and space missions, but have been insufficiently investigated. Appropriate countermeasures are required, such as exercise, which is known to prevent mood disorders for prolonged space and isolation missions. Based on the...