Studies of the Efficacy of Physical Exercises in Long Term Space Flight
- Paper number
IAC-06-A1.3.09
- Author
Dr Diliara Khusnutdinova, Institute for Biomedical Problems, Russia
- Coauthor
Dr. Inessa Kozlovskaya, Institute for Biomedical Problems, Russia
- Year
2006
- Abstract
Efficacy of the physical exercises used by the members of long term space flights (SFs) on ISS, to counteract disturbances in motor and automatic systems have been studied. Methods. Two tests - incremental running on a passive treadmill with voluntary chosen loads according to the specified wording ("walking", "slow jogging", "jogging", "fast running"), and incremental cycling with gas analysis, heart rate (HR) and blood lactate (La) determination were performed at the end of the first month of flight, at the 2-3 and 4-5 months of flight. The peak values of pulmonary ventilation (VE), HR and La were used as criteria of performance. As the speeds of locomotion in MO-3 test were selected subjectively, the data in the locomotor test were presented also as peak VE, HR, and La related to the peak speed of running (VE/V, HR/V, La/V). Results. The pulmonary ventilation in Bicycle test showed the tendency to decrease during first months of flight by 11%, being practically equal in the next month. The peak HR increased in the first month and decreased further in 2-3 month by 4% and in 4-5 month of flight by 7% accordingly. The lactate increased in 2-3 month by 14% and in 4-5 month by 30% of flight accordingly. Thus the highest "physiological cost" of bicycling during session 1. The same results were obtained in the locomotor test. The total distance in locomotor test in session 1 on the average amounting to 690 m. It increased in comparison with session 1 by 6% in 2-3 month and by 7% in 4-5 month. The peak VE/V during "fast running" step of the test had a tendency to decrease in session 2 by 9%, and didn’t changed further. The peak HR/V during "fast running" step of the test had a tendency to decrease in session 2 and 3 by 8 and 11% accordingly. The lactate didn’t change during fly. Conclusion. The results of studies revealed a significant decline of all the performance measures in the first month of flight and the obvious tendency for improving the performance during later phases of flight. Alterations of performance differed substantially in different subjects depending on the intensities and values of physical exercise, that were used.
- Abstract document
- Manuscript document
IAC-06-A1.3.09.pdf (🔒 authorized access only).
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