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Oxygen Uptake and Muscle Deoxygenation Kinetics During Skating: Comparison Between Slide-Board and Treadmill Skating
Oxygen Uptake and Muscle Deoxygenation Kinetics During Skating: Comparison Between Slide-Board and Treadmill Skating
- Source :
- International Journal of Sports Physiology and Performance. 13:783-788
- Publication Year :
- 2018
- Publisher :
- Human Kinetics, 2018.
-
Abstract
- Purpose:To compare the oxygen-uptake () kinetics during skating on a treadmill and skating on a slide board and to discuss potential mechanisms that might control thekinetics responses during skating.Methods:Breath-by-breath pulmonaryand near-infrared spectroscopy–derived muscle deoxygenated hemoglobin and myoglobin ([HHbMb]) were monitored continuously in 12 well-trained, young, long-track speed skaters. On-transientand [HHbMb] responses to skating on a treadmill and skating on a slide board at 80% of the estimated gas exchange threshold were fitted as monoexponential function. The signals were time-aligned, and the individual [HHbMb]-to-ratio was calculated as the average value from 20 to 120 s after exercise starts.Results:The time constants for the adjustment of phase II(τ) and [HHbMb] (τ [HHbMb]) were low and similar between slide board and treadmill skating (18.1 [3.4] vs 18.9 [3.6] for τand 12.6 [4.0] vs 12.4 [4.0] s for τ [HHbMb]). Theratio was not different from 1.0 (P > .05) in both conditions.Conclusions:The fastkinetics during skating suggest that chronic adaptation to skating might overcome any possible restriction in leg blood flow during low-intensity exercise. Theratio values also suggest a good matching of O2delivery to O2utilization in trained speed skaters. The similar τand τ [HHbMb] values between slide board and treadmill further reinforce the validity of using a slide board for skating testing and training purposes.
- Subjects :
- Male
Materials science
Adolescent
Kinetics
Analytical chemistry
Physical Therapy, Sports Therapy and Rehabilitation
030204 cardiovascular system & hematology
Quadriceps Muscle
Hemoglobins
03 medical and health sciences
Oxygen Consumption
0302 clinical medicine
Humans
Orthopedics and Sports Medicine
Speed skating
Treadmill
Deoxygenation
Vo2 kinetics
Simulation
Leg
Myoglobin
Respiration
Reproducibility of Results
030229 sport sciences
Adaptation, Physiological
Oxygen uptake
Skating
Exercise Test
Female
Physical Conditioning, Human
Subjects
Details
- ISSN :
- 15550273 and 15550265
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- International Journal of Sports Physiology and Performance
- Accession number :
- edsair.doi.dedup.....6dbc0af6a73b331c0859ed65e637e15c
- Full Text :
- https://doi.org/10.1123/ijspp.2017-0440