Exercise during spaceflight has been used as a countermeasure to inhibit loss of bone mineral...
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Exercise during spaceflight has been used as a countermeasure to inhibit loss of bone mineral density (BMD). One research study performed by the Biostatistics Laboratory compared the differences in BMDs of astronauts from post-flight to pre-flight aboard Mir (using a treadmill and bicycle ergometer) and of astronauts aboard the ISS (using the iRED). (here is more information if you are interested Maintaining BD), e> Is using the iRED exercise method significantly better than using the treadmill and bicycle in maintaining bone density? The researchesr ran a 2- sample t-test to test their hypothesis where = average BMD of astronauts aboard Mir (treadmill and bike) and 2 average BMD of astronauts aboard ISS (iRed). Here are the results: The test results are as follows: t = -4.47861 p = 0.000098 Interpret the p-value of 0.000098. O There is a 0.0098% probability that iRed exrcise method is significantly better than using the treadmill and bicycle method. There is a 0.0098% chance that the difference between t
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