Konings, M. (Marco) (2014) Differences in muscle oxygenation, perceived fatigue, and recovery between long-track and short-track speed skating. thesis, Human Movement Sciences.
Full text available on request.Abstract
Aim: To examine the influence of training mode (short-track vs. long-track) on muscle oxygenation, perceived fatigue, and recovery in speed skating. It was hypothesized that the working muscles will remain more deoxygenated during short-track speed skating, leading to higher experienced fatigue, and longer periods of recovery. Method: Muscle oxygenation of twelve talented short-track speed skaters was continuously monitored during both long-track (LT) and short-track (ST) skating time-trials using near-infrared spectroscopy (NIRS) on the m. vastus lateralis for both legs. video captures were made of each training session for further interpretation of the muscle oxygenation. To determine recovery, perceived exertion was measured two, and four hours after each training sessions. Repeated measures ANOVA’s were used for statistical analysis (p<.05). Results: After a rapid desaturation in both legs directly after the start, an asymmetry in muscle oxygenation between both legs was found during LT (tissue saturation-index (TSI%)-slope: left=0.053±0.032; right=0.023±0.020, p<.05) and ST speed skating (TSI%-slope: left=0.050±0,052, right=0.001 ±0.053, p<.05). Re-saturation of the right leg was relatively lower in ST compared to LT. For the left leg no difference was found between training modes in muscle oxygenation. The NIRS measurements in combination with the video captures showed that the asymmetry between the legs occurred during the straights in LT. In contrast, the asymmetry in ST occurred during the travelling around the corner. Respectively, two (ST=5.8±2.0; LT=4.2±1.5), and four hours (ST=4.6±1.9; LT=3.1±1.6) after the time-trials, a higher rate of perceived exertion was found for ST. Conclusion: The re-oxygenation off the muscles during the time-trials differs between both training modes. Where the left leg in short-track re-oxygenates when travelling around the corner, in long-track speed skating re-oxygenation occurs during skating the straights. The right leg remained more deoxygenated during short-track compared to long-track speed skating. This seems to lead to longer periods of recovery needed after short-track skating, supported by the higher experienced fatigue reported in the hours after the short-track time-trials. Keywords: near-infrared spectroscopy, elite athletes, training, muscle physiology
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | Hettinga, dr. F.J. and Elferink-Gemser, dr. M.T. |
| Faculty: | Medical Sciences |
| Date Deposited: | 01 Apr 2022 13:14 |
| Last Modified: | 01 Apr 2022 13:14 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3029 |
Actions (login required)
 |
View Item |