THE EFFECT OF STEROID HORMONES ON PHYSIOLOGICAL PARAMETERS AND HUMAN BODY COMPOSITION DURING SHORT-TERM SIMULATION OF SPACE FLIGHT FACTORS
Table 1 - Results of multiple correlation analyses
Independent variables | Dependent variables ( BETA±standard error) | ||
BMI%* | PHE-Isolation | GMF* | |
Age | -0,28 | – | – |
Body mass index % | – |
| 0,27 |
Heart rate |
| – | 0,14 |
Arterial pressure diastolic | -0,77 | – | – |
Cardiac output | -0,16 | – |
|
Resting VО2 | – | – | -1,41 |
Respiratory coefficient % | – | – | 2,85 |
Extracellular/cellular fluids | – | 0,52±0,05 | – |
Lean body mass % | – | – | -8,98 |
Body cell mass % | – | -0,13±0,05 |
|
Intracellular substance % | – | 0,67±0,04 |
|
Dry lean body mass % | – |
| 8,00 |
Progesterone % | 0,74 | – | 1,50 |
Cortisol % | -0,89 |
| 0,39 |
Free cortisol % | 0,09 | – | – |
Aldosterone % | -1,28 | 0,22±0,08 |
|
Testosterone % | 0,46 | -0,23±0,04 | – |
Free testosterone % | -0,24 | – |
|
Testosterone free/total % | -0,64 | – | – |
Dihydrotestosterone % | – | – | 1,85 |
Cortisol /testosterone | 1,76 | – | – |
Estradiol/testosterone % | 0,71 | – | – |
Final results of multiple correlation analyses | |||
Significance of F-test, p | 0,004 | <0,0001 | 0,002 |
Coefficient of multiple correlation (R) | >0,999 | 0,998 | >0,999 |
Coefficient of multiple determination (R2) | >0,999 | 0,996 | >0,999 |
Adjusted R2 | >0,999 | 0,990 | >0,999 |
Standard error of estimate | 0,006 | 0,052 | 0,002 |
BETA – standardized regression coefficients (p <0,05), empty cells – variables not included in the final equation of multiple regression; % – percentage of changes relative to background; BMI – body mass index in dry immersion; PHE – physical exercise (range); GMF – geomagnetic field (range); * – standard error of BETA <0,04