A5088923168- Spaceflight effects on biology
- High Altitude and Hypoxia
- Heart Rate Variability and Autonomic Control
- Thermoregulation and physiological responses
- Muscle metabolism and nutrition
- Cardiovascular and exercise physiology
- Paleontology and Evolutionary Biology
- Climate Change and Health Impacts
- Sports Performance and Training
- Erythropoietin and Anemia Treatment
- Evolution and Paleontology Studies
- Air Quality and Health Impacts
- Body Composition Measurement Techniques
- Planetary Science and Exploration
- Non-Invasive Vital Sign Monitoring
- Muscle Physiology and Disorders
- Adventure Sports and Sensation Seeking
- Astro and Planetary Science
- Space Exploration and Technology
- Mitochondrial Function and Pathology
- Diet and metabolism studies
- Physical Activity and Health
- Mobile Health and mHealth Applications
- Exercise and Physiological Responses
- Circadian rhythm and melatonin
Charité - Universitätsmedizin Berlin
2016-2025
Freie Universität Berlin
1993-2022
Humboldt-Universität zu Berlin
2019-2022
MSB Medical School Berlin
2013
Universities Austria
2003
California State Polytechnic University
2003
University of Münster
1985
Background Wearable devices hold great promise, particularly for data generation cutting-edge health research, and their demand has risen substantially in recent years. However, there is a shortage of aggregated insights into how wearables have been used research. Objective In this review, we aim to broadly overview categorize the current research conducted with affordable wearable Methods We performed scoping review understand use affordable, consumer-grade from population perspective using...
Abstract The neurobehavioral risks associated with spaceflight are not well understood. In particular, little attention has been paid on the role of resilience, social processes and emotion regulation during long-duration spaceflight. Bed rest is a well-established analogue that combines adaptations physical inactivity semi-isolation confinement. We here investigated effects 30 days 6 degrees head-down tilt bed affective picture processing using event-related potentials (ERP) in healthy men....
Although climate change is one of the biggest global health threats, individual-level and short-term data on direct exposure impacts are still scarce. Wearable electronic devices (wearables) present a potential solution to this research gap. Wearables have become widely accepted in various areas for ecological momentary assessment, some studies used wearables field health. However, these vary study design, demographics, outcome variables, existing has not been mapped.In review, we aimed map...
Background Consumer-grade wearables are becoming increasingly popular in research and clinical contexts. These technologies hold significant promise for advancing digital medicine, particularly remote rural areas low-income settings like sub-Saharan Africa, where climate change is exacerbating health risks. This study evaluates the data agreement between consumer-grade research-established devices under standardized conditions. Methods Twenty-two participants (11 women, 11 men) performed a...
Antarctic residence holds many challenges to human physiology, like increased psycho-social tension and altered circadian rhythm, known influence sleep. We assessed changes in sleep patterns during 13 months of overwintering at the German Stations Neumayer II III from 2008 2014, with focus on gender, as previous investigations were inconclusive regarding gender-based differences or had only included men.Time bed, time, efficiency, number arousals, latency, onset, offset, physical activity...
Microgravity as well chronic muscle disuse are two causes of low back pain originated at least in part from paraspinal deconditioning. At present no study investigated the complexity molecular changes human or mouse muscles exposed to microgravity. The aim this was evaluate longissimus dorsi adaptation microgravity both morphological and global gene expression level. C57BL/N6 male mice were flown aboard BION-M1 biosatellite for 30 days (BF) housed a replicate flight habitat on ground (BG)....
Antarctica challenges human explorers by its extreme environment. The effects of these unique conditions on the physiology need to be understood best mitigate health problems in Antarctic expedition crews. Moreover, is an adequate Earth-bound analogue for long-term space missions. To date, have been studied mainly male cohorts though more female expeditioners and applicants astronaut training programs are selected. Therefore, identification sex differences stress immune reactions becoming...
Firefighters face a high-risk potential, thus their psychological ability to cope with critical or traumatic events is crucial characteristic. This study examines correlations between cardiac autonomic modulation, risk-taking behavior, and resilience in professional firefighters. Twenty male firefighters underwent 20 min beat-to-beat heart rate (HR) monitoring at baseline the morning upon awakening, then before, during after realistic deployment container, systematically set on fire....
Erythropoietin (EPO), triiodothyronine, thyroxine, thyroid-stimulating hormone (TSH), hemoglobin (Hb), reticulocytes, packed cell volume, and plasma volume changes were studied in 29 male Austrian mountain rescue soldiers before several days after an ascent from 744 to 2,315 m the Alps. EPO concentrations showed a remarkable increase 48 h (P < 0.01). No significant found TSH. Reticulocytes increased only slightly. Hb decreased during week Packed did not change, whereas slight decrease for...
Head-down-tilt bed rest (HDT) mimics the changes in hemodynamics and autonomic cardiovascular control induced by weightlessness. However, time course reciprocal interplay of these adaptations, effective exercise protocol as a countermeasure need further clarification. The overarching aim this work (as part European Space Agency sponsored long-term study) was therefore to evaluate during prolonged HDT assess whether short-duration/high-intensity could mitigate effects. A total n=23 healthy,...
Abstract Although it is generally assumed that herbivores have more voluminous body cavities due to larger digestive tracts required for the digestion of plant fiber, this concept has not been addressed quantitatively. We estimated volume torso in 126 terrestrial tetrapods (synapsids including basal synapsids and mammals, diapsids birds, non‐avian dinosaurs reptiles) classified as either herbivore or carnivore digital models mounted skeletons, using convex hull method. The difference...
Isometric exercise is a popular form of physical activity for many people. Only few studies exist on the effects this type hemostatic system. Eleven male healthy subjects (21-42 years) varying fitness levels were investigated before, immediately after and 10 min strenuous isometric dominant arm. Blood samples drawn by repetitive puncture from both exercising contralateral The following variables studied: Prothrombin time partial thromboplastin as group tests plasmatic coagulation system;...
Cardiac autonomic modulation of heart rate, assessed by rate variability (HRV), is commonly used to monitor training status. HRV usually measured in athletes after awakening the morning supine position. Whether recording during standing reveals additional information compared remains unclear. We aimed evaluate association between short-duration HRV, both and position, a low-intensity long-duration performance (walking ultramarathon), as well experience. Twenty-five competitors 100 km walking...
Journal Article Fluid recruitment from shell tissues of the body during haemodialysis Get access H.-Chr. Gunga, Gunga Department Physiology, Free University BerlinBerlin, Germany Search for other works by this author on: Oxford Academic PubMed Google Scholar F.-J. Baartz, Baartz I. Herrenleben, Herrenleben K. Kirsch Nephrology Dialysis Transplantation, Volume 9, Issue 1994, Pages 1288–1291, https://doi.org/10.1093/ndt/9.9.1288 Published: 01 January 1994 history Received: 23 July 1993...
Background: The Montane® Yukon Arctic Ultra (YAU) is one of the longest (690 km) and coldest (+10.6°C-43.9°C) ultramarathons worldwide. Taking part in an ultramarathon associated with great physiological psychological stress, which can affect one's mood, level hormones, peptides. current study aimed to identify relationships between peptides, mood states participants during this ultramarathon. Methods: cohort consisted 36 (19 men, 17 women, 38.64 ± 9.12 years) split into a finisher (n = 10),...