Interactions between perceived exertion and thermal perception in the heat in endurance athletes

Roussey, Gilles; Gruet, Mathieu; Vercruyssen, Fabrice; Louis, Julien; Vallier, Jean‐Marc; Berthet, Thierry

doi:10.1016/j.jtherbio.2018.07.006

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…BodyCap e-Celsuis [11]) can be used, for instance, as an ingestible for humans and as an implantable for a wide range of animals: from rodents to cattle. Roussey et al [49] reported an intracorporal temperature telemetry using a realization of the proposed technology. The proposed design (both in planar and conformal realizations) can also be used in active implantable medical devices featuring therapeutic actuation as well as applied to other non-medical fields where high robustness to environment is essential.…”

Section: Discussionmentioning

confidence: 99%

Immune-to-Detuning Wireless In-Body Platform for Versatile Biotelemetry Applications

Nikolayev

Sauleau

2019

IEEE Trans. Biomed. Circuits Syst.

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Background and Objective: In-body biotelemetry devices enable wireless monitoring of a wide range of physiological parameters. These devices rely on antennas to interface with external receivers, yet existing systems suffer from impedance detuning caused by the substantial differences in electromagnetic properties among various tissues. In this paper, we propose an immune-to-detuning in-body biotelemetry platform featuring a novel tissue-independent antenna design. Methods: Our approach uses a novel slot-patch conformal antenna integrated into a flexible polyimide PCB containing the device circuitry and encapsulated within a 17.7 mm × 8.9 mm biocompatible shell. The antenna is synthesized and optimized using a hybrid analytical-numerical approach, then characterized numerically and experimentally in terms of impedance stability. Results: The proposed platform shows stable impedance whereas operating in any mammalian tissue as well as in air. The system is optimized for the 434 MHz ISM band and can easily be returned for any MedRadio band in the 401-457 MHz spectrum. Conclusion: Ultra-robust impedance characteristics were achieved. Without any modifications, the proposed biotelemetry platform can be used, for instance, as an ingestible for humans or as an implantable for a wide range of animals: from rodents to cattle.Index Terms-biomedical telemetry, conformal antennas, implantable, in-body, ingestible, ISM (industrial, scientific, and medical) band, MedRadio band, robust antennas.

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Section: Discussionmentioning

confidence: 99%

Immune-to-Detuning Wireless In-Body Platform for Versatile Biotelemetry Applications

Nikolayev

Sauleau

2019

IEEE Trans. Biomed. Circuits Syst.

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“…It should be conceded that some studies, albeit a relatively small proportion, have failed to detect effect of mental fatigue on performance. This has occurred for both isometric (Murtagh & Todd, 2004 ) and whole‐body endurance exercises (Roussey et al, 2018 ). Additionally, there is evidence that higher levels of motivation can overcome the negative effects of mental fatigue on both cognitive and physical performance (Müller & Apps, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Cognitive tasks elicit mental fatigue and impair subsequent physical task endurance: Effects of task duration and type

2022

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Although mentally fatiguing cognitive tasks can impair subsequent physical endurance, the importance of cognitive task duration and the role of response inhibition remain unclear. This study compared the effects of a serial incongruent Stroop color-classification task (i.e., with response inhibition) and N-back memory updating task (i.e., without response inhibition) on mental fatigue and subsequent rhythmic handgrip exercise. Participants (N = 90) were randomly assigned to one of three cognitive task groups (Stroop, 2-back, control) and completed four 10-min blocks of one cognitive task followed by a 5-min physical endurance task (self-paced rhythmic handgrip exercise). Heart rate, heart rate variability, electromyographic forearm activity, and force were recorded throughout along with self-reported measures of fatigue, exertion, and motivation. From the start, the Stroop and 2-back tasks elicited higher heart rate and lower heart rate variability as well as greater fatigue, effort, and interest/enjoyment than the control task.From the second block onwards, the Stroop and 2-back groups produced less force than the control group. There were no group differences in forearm muscle activity. In sum, mental fatigue was induced after performing a cognitive task for 10 mins, whereas muscular endurance was impaired after performing a cognitive task for 20 mins. That these effects were observed for both types of cognitive task indicates that response inhibition is not a necessary condition. The cognitive task duration required to induce mental fatigue and impair rhythmic handgrip endurance performance lay between the durations reported previously for isometric (a few minutes) and whole-body (half an hour) endurance exercise.

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Effects of Prior Cognitive Exertion on Physical Performance: A Systematic Review and Meta-analysis

et al. 2019

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Interactions between perceived exertion and thermal perception in the heat in endurance athletes

Cited by 6 publications

References 45 publications

Immune-to-Detuning Wireless In-Body Platform for Versatile Biotelemetry Applications

Immune-to-Detuning Wireless In-Body Platform for Versatile Biotelemetry Applications

Cognitive tasks elicit mental fatigue and impair subsequent physical task endurance: Effects of task duration and type

Effects of Prior Cognitive Exertion on Physical Performance: A Systematic Review and Meta-analysis

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