Asymmetry of Quadriceps Muscle Oxygenation during Elite Short-Track Speed Skating

Hesford, Catherine; Laing, Stewart J.; Cardinale, Marco; Cooper, Chris E.

doi:10.1249/mss.0b013e31822f8942

Cited by 58 publications

(66 citation statements)

References 26 publications

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“…24 Due to the associated lower energy costs, more energy could then be saved for a final acceleration in the last stages of the race. Lastly, a slower start may diminish the effects of the reduced blood flow to the working muscles, 22,26,27 thereby again saving more energy for the final part of the race.…”

Section: Discussionmentioning

confidence: 99%

Pacing Behavior and Tactical Positioning in 1500-m Short-Track Speed Skating

Konings¹,

Noorbergen²,

Hettinga³

2016

International Journal of Sports Physiology and Performance

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Section: Discussionmentioning

confidence: 99%

Pacing Behavior and Tactical Positioning in 1500-m Short-Track Speed Skating

Konings¹,

Noorbergen²,

Hettinga³

2016

International Journal of Sports Physiology and Performance

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“…This technique is called the "hang phase". During this technique, the left leg is able to resaturate, whereas the right leg cannot [13]. We have previously suggested from 500m studies that the cumulative effect of these "hang" phases could lead to asymmetry in oxygenation and blood volume that persisted throughout the simulation [13].…”

Section: Discussionmentioning

confidence: 99%

NIRS Measurements with Elite Speed Skaters: Comparison Between the Ice Rink and the Laboratory

Hesford

Cardinale

Laing

et al. 2012

Advances in Experimental Medicine and Biology

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Wearable, wireless near-infrared (NIR) spectrometers were used to compare changes in on-ice short-track skating race simulations over 1500m with a three-minute cycle ergometry test at constant power output (400W). The subjects were six male elite short-track speed skaters. Both protocols elicited a rapid desaturation (∆TSI%) in the muscle during early stages (initial 20s), however asymmetry between right and left legs was seen in ΔTSI% for the skating protocol, but not for cycling. Individual differences between skaters were present in both protocols. Notably, one individual who showed a relatively small TSI% change (-10.7%, group mean = -26.1%), showed a similarly small change during the cycling protocol (-5.8%, group mean = -14.3%). We conclude that NIRS-detected leg asymmetry is due to the specific demands of short-track speed skating. However, heterogeneity between individuals is not specific to the mode of exercise. Whether this is a result of genuine differences in physiology or a reflection of differences in the optical properties of the leg remains to be determined.

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“…4 In support of this, positive peripheral muscle oxygenation adaptations have been reported as a consequence of cycling sprint interval training, demonstrating that NIRS has the potential to assess the effectiveness of training interventions at the level of the individual athlete. 7 To be effective outside the research laboratory, in an applied exercise environment, there is a requirement for low-cost, portable NIR technology with telemetric capability with the ability to withstand the rigors of sporting environments such as in swimming, 8 short track speed skating, 9 and trail running.…”

Section: Introductionmentioning

confidence: 99%

Performance comparison of the MOXY and PortaMon near-infrared spectroscopy muscle oximeters at rest and during exercise

2018

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Abstract. The purpose of the study was to compare muscle oxygenation as measured by two portable, wireless near-infrared spectroscopy (NIRS) devices under resting and dynamic conditions. A recently developed low-cost NIRS device (MOXY) was compared against an established PortaMon system that makes use of the spatially resolved spectroscopy algorithm. The influence of increasing external pressure on tissue oxygen saturation index (TSI) indicated that both devices are stable between 2 and 20 mmHg. However, above this pressure, MOXY reports declining TSI values. Analysis of adipose tissue thickness (ATT) and TSI shows a significant, nonlinear difference between devices at rest. The devices report similar TSI (%) values at a low ATT (<7 mm) (PortaMon minus MOXY difference is þ1.1 AE 2.8%) with the major subsequent change between the devices occurring between 7 and 10 mm; at ATT values >10 mm the difference remains constant (−14.7 AE 2.8%). The most likely explanation for this difference is the small source-detector separation (2.5 cm) in the MOXY resulting in lower tissue penetration into muscle in subjects with higher ATT. Interday test-retest reliability of resting TSI was evaluated on five separate occasions, with the PortaMon reporting a lower coefficient of variation (1.8% to 2.5% versus 5.7% to 6.2%). In studies on male subjects with low ATT, decreases in the TSI were strongly correlated during isometric exercise, arterial occlusion, and incremental arm crank exercise. However, the MOXY reports a greater dynamic range, particularly during ischemia induced by isometric contraction or occlusion (Δ74.3% versus Δ43.7%; hyperemia MAX-occlusion MIN). This study shows that in this subject group both MOXY and PortaMon produce physiologically credible TSI measures during rest and exercise. However, the absolute values obtained during exercise are generally not comparable between devices unless corrected by physiological calibration following an arterial occlusion. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Asymmetry of Quadriceps Muscle Oxygenation during Elite Short-Track Speed Skating

Abstract: NIRS was shown to be a viable tool for wireless monitoring of muscle oxygenation. The asymmetry in muscle desaturation observed on the two legs in short-track speed skating has implications for training and performance.

Cited by 58 publications

References 26 publications

Pacing Behavior and Tactical Positioning in 1500-m Short-Track Speed Skating

Pacing Behavior and Tactical Positioning in 1500-m Short-Track Speed Skating

NIRS Measurements with Elite Speed Skaters: Comparison Between the Ice Rink and the Laboratory

Performance comparison of the MOXY and PortaMon near-infrared spectroscopy muscle oximeters at rest and during exercise

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