Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
Viral activation |
Latent herpes virus shedding changes over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Other |
Vitamin D status |
Serum concentration changes of 25-OH and 1,25 OH vitamin D over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Other |
GABA and BDNF |
Changes in serum concentrations of GABA and BDNF (pg/ml) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Other |
Serotonin in blood |
Changes in serum concentrations of serotonin (ng/ml) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Other |
Kynurenine in blood |
Changes in serum concentrations of Kynurenine (µmol/l) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Other |
Changes in further tryptophan metabolites |
Changes in serum concentrations of Kynurenic acid, Quinolinic acid, Picolinic acid, Methylnicotinamide, Quinaldic acid, 3-hydroxykynurenine, Anthranilic acid, Nicotinamide (nmol/l) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Other |
Bone formation marker |
Changes in serum concentrations of PINP in µg/L |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Other |
Bone resorption marker |
Changes in serum concentrations of ß-CTX in ng/L |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Other |
Body weight |
Changes in body weight (kg) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Other |
Body height |
Measurement of body height to derive changes in body mass index |
pre-Antarctica |
|
Other |
Profile of mood states |
The profile of mood states is a psychological rating scale to measure changes in six different dimensions of mood (tension, depression, anger, vigour, fatigue, confusion) measured by a questionnaire. It is a five point scale ranging from "not at all" to "extremely". |
5 consecutive days at baseline, pre-Antarctica; 5 consecutive days every month during the 12 month stay at Antarctica; 5 consecutive days 6-7 month after return from Antarctica |
|
Other |
Positive and negative affect schedule |
The Positive and Negative Affect Schedule (PANAS) is a self-report questionnaire that consists of two 10-item scales to measure both positive and negative affect. Each item is rated on a 5-point scale of 1 (not at all) to 5 (very much). |
5 consecutive days at baseline, pre-Antarctica; 5 consecutive days every month during the 12 month stay at Antarctica; 5 consecutive days 6-7 month after return from Antarctica |
|
Other |
Appraisal of life events scale |
The Appraisal of life events scale (ALE) measures three factors of appraisal: threat, challenge and loss. It is an adjective check list of 16 adjectives rated on a 6-point scale (1 = disagree very strongly, 6= agree very strongly) that can be used to assess appraisals of retrospectively recalled stressful events as well as ongoing stressful encounters. |
baseline, pre-Antarctica; about 6-7 month after return from Antarctica |
|
Other |
Subjective assessment of performance by a Visual Analogue Scale |
The subjective Assessment of Performance Visual Analogue Scale measures factors such as stress, pain, and anxiety using a visual analog scale. The scale is a numerical rating scale ranking the respective factors from 1 to 10. A higher score indicates greater intensity of the respective factor. |
baseline, pre-Antarctica; every month during the 12 month stay at Antarctica; about 6-7 month after return from Antarctica |
|
Other |
General health Questionnaire (GHQ) |
The General health Questionnaire (GHQ) focuses on two major areas - the inability to carry out normal functions and the appearance of new and distressing phenomena. It is a 28 item questionnaire and assesses the respondent's current state and asks if that differs from his or her usual state. Each item is accompanied by four possible responses, typically being 'not at all', 'no more than usual', 'rather more than usual' and 'much more than usual', scoring from 0 to 3, respectively. |
baseline, pre-Antarctica; every month during the 12 month stay at Antarctica; about 6-7 month after return from Antarctica |
|
Other |
Global Physical Activity Questionnaire |
The Global Physical Activity Questionnaire (GPAQ) comprises 19 questions grouped to capture physical activity undertaken in different behavioral domains: work, transport, discretionary and time spent in sedentary activities. It asks for whether at all and if, how many days and how long the respective activity will usually be carried out. |
baseline, pre-Antarctica |
|
Other |
Depression symptoms |
Center for Epidemiologic Studies Depression Scale is a 20-item measure that asks the test subjects to rate how often over the past week they experienced symptoms associated with depression, such as restless sleep, poor appetite, and feeling lonely. Response options range from 0 to 3 for each item (0 = Rarely or None of the Time, 1 = Some or Little of the Time, 2 = Moderately or Much of the time, 3 = Most or Almost All the Time). Scores range from 0 to 60, with high scores indicating greater depressive symptoms. |
Mid-term of the 12 month stay in Antarctica |
|
Other |
Nutrient intake |
Food frequency questionnaire measuring food habits and dietary intake during 3 consecutive days including one weekend day. |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Primary |
Glucose tolerance |
Area under the serum glucose concentration curve (2 hours) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Primary |
Insulin resistance |
Area under the serum insulin concentration curve (2 hours) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Fecal calprotectin |
Concentration changes in feces (µg/g) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Fecal zonulin |
Concentration changes in feces (ng/ml) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Fecal short chain fatty acids |
Concentration changes in feces (mmol/l) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Gut microbiota profiling |
Feces feces will be analyzed for microbiota composition by 16S rRNA gene-based next-generation sequencing; Alpha and beta diversity, taxonomic assignment and relative abundance of bacterial groups will be characterized by bioinformatics. |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Saliva cortisol |
Cortisol concentration changes in saliva over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Saliva DHEA |
DHEA concentration changes in saliva over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Inflammation markers in blood |
Changes in blood cytokines concentration (EGF, FGF-2, Eotaxin, TGF-a, G-CSF, Flt-3L, GM-CSF, Fractalkine, IFNa2, IFNy, GRO, IL-10, MCP-3), IL-12P40, MDC, IL-12P70, IL-13, IL-15, sCD40L, IL-17, IL-1RA, IL-1a, IL-9, IL-1ß, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IP-10, MCP-1, MIP-1a, MIP-1ß, TNFa, TNFß, VEGF, PDGF-AA, PDGFAB-BB, RANTES) pg/ml changes over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
CRP changes in blood |
Changes (mg/L) in blood C-reactive protein concentrations over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Lipid metabolism |
Serum concentration changes of triglycerides, total-, HDL-, LDL-cholesterol over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Glycated albumin |
Serum concentration changes of blood glycated albumin over time in g/l and % |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
GLP-1 |
Serum concentration changes of GLP-1 (pmol/l) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|
Secondary |
Fetuin-A |
Serum concentration changes of Fetuin-A (µg/ml) over time |
baseline, pre-Antarctica; every 1-2 month from month 4 to 10 during the stay in Antarctica (total stay about 12 month); about 6-7 month after return from Antarctica |
|