Short duration resistive exercise sustains neuromuscular function after bed rest
- Paper number
IAC-12,A1,2,20.p1,x13959
- Author
Mr. Ulf Gast, Charité - University Medicine Berlin, Germany
- Coauthor
Dr. Silke John, Germany
- Coauthor
Dr. Rainer Rawer, Germany
- Coauthor
Dr. Martin Runge, Germany
- Coauthor
Prof. Dieter Felsenberg, Charité - University Medicine Berlin, Germany
- Coauthor
Dr. Daniel Belavy, Charité - University Medicine Berlin, Germany
- Year
2012
- Abstract
Purpose: To assess the effectiveness of a short duration, high-load resistive exercise program performed three days a week on preventing deterioration in neuromuscular function after prolonged bedrest. Methods: Twenty-four male subjects as part of the 2nd Berlin Bed Rest Study (BBR2-2) performed high-load resistive exercise (RE; n=8), high-load resistive exercise with whole-body vibration (RVE; n=9) or no exercise (CTR, n=9) during 60-days head-down tilt bed rest. Peak countermovement jump power and height, sit-to-stand tests, sprint time over 15m and 30m and leg-press one repetitions maximum were measured before and after bed rest. Values are reported as mean(SD) percentage change versus pre-bed-rest. Results: The exercise interventions ameliorated losses of peak jumping power (p$<$0.001; CTR:-27(13)\%, RE:-11(9)\%, RVE:-7(12)\%) and height (p$<$0.001; CTR:-37(16)\%, RE:-17(13)\%, RVE:-13(8)\%), deterioration of performance in sit-to-stand tests from 45cm (p=0.034; CTR:+27(30)\%, RE:+1(11)\%, RVE:+4(6)\%) and 30cm (p$<$0.001; CTR:+36(20)\%, RE:+9(14)\%, RVE:+4(13)\%) sitting positions, increases of 15m sprint time (p=0.037; CTR:+50(24)\%, RE:+8(7)\%, RVE:+18(21)\%), increases of 30m sprint time (p=0.005; CTR: +37(13)\%, RE: +6(7)\%, RVE: +15(13)\%) and losses of one-repetition maximum leg-press (p$<$0.001; CTR: -12(6)\%, RE:+2(6)\%,: RVE: +11(8)\%). Conclusion: The short duration (6 minutes time under tension per training session) exercise countermeasure program performed three times a week was capable of reducing the impact of prolonged bed rest on a number of neuromuscular function measures.
- Abstract document
- Manuscript document
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