The Role of CO
            <sub>2</sub>
            on Respiration and Metabolism During Hypercapnic and Normocapnic Recovery From Exercise

Konstantopoulos, Athanasios I.; Bourdas, Dimitrios I.

doi:10.1080/02701367.2020.1756196

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…Methods may be explored to reduce hypocapnic conditions when exercising. For this purpose, some hypercapnic breathing techniques have been proposed as a strategy to reverse hypocapnia, but these methods are still debated [ 33 ]. Indeed, it is necessary to explore how CO 2 levels could improve or decrease long-term performance.…”

Section: Discussionmentioning

confidence: 99%

Tent versus Mask-On Acute Effects during Repeated-Sprint Training in Normobaric Hypoxia and Normoxia

Vasquez-Bonilla

Rojas-Valverde

González-Custodio

et al. 2021

JCM

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Repeated sprint in hypoxia (RSH) is used to improve supramaximal cycling capacity, but little is known about the potential differences between different systems for creating normobaric hypoxia, such as a chamber, tent, or mask. This study aimed to compare the environmental (carbon dioxide (CO2) and wet-globe bulb temperature (WGBT)), perceptual (pain, respiratory difficulty, and rate of perceived exertion (RPE)), and external (peak and mean power output) and internal (peak heart rate (HRpeak), muscle oxygen saturation (SmO2), arterial oxygen saturation (SpO2), blood lactate and glucose) workload acute effects of an RSH session when performed inside a tent versus using a mask. Twelve well-trained cyclists (age = 29 ± 9.8 years, VO2max = 70.3 ± 5.9 mL/kg/min) participated in this single-blind, randomized, crossover trial. Participants completed four sessions of three sets of five repetitions × 10 s:20 s (180 s rest between series) of all-out in different conditions: normoxia in a tent (RSNTent) and mask-on (RSNMask), and normobaric hypoxia in a tent (RSHTent) and mask-on (RSHMask). CO2 and WGBT levels increased steadily in all conditions (p < 0.01) and were lower when using a mask (RSNMask and RSHMask) than when inside a tent (RSHTent and RSNTent) (p < 0.01). RSHTent presented lower SpO2 than the other three conditions (p < 0.05), and hypoxic conditions presented lower SpO2 than normoxic ones (p < 0.05). HRpeak, RPE, blood lactate, and blood glucose increased throughout the training, as expected. RSH could lead to acute conditions such as hypoxemia, which may be exacerbated when using a tent to simulate hypoxia compared to a mask-based system.

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Section: Discussionmentioning

confidence: 99%

Tent versus Mask-On Acute Effects during Repeated-Sprint Training in Normobaric Hypoxia and Normoxia

Vasquez-Bonilla

Rojas-Valverde

González-Custodio

et al. 2021

JCM

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“…Respiratory alkalosis disturbance becomes more obvious during recovery or between seasons of intermittent exercise, which leads to neural fatigue state among players. 30 …”

Section: Discussionmentioning

confidence: 99%

The Effect of Intensity Soccer Training Sessions on Marked Biochemical Indicators of Blood Acidity of Saudi Young Soccer Players

Alshuwaier¹,

Ghazzawi²,

Alaqil³

et al. 2022

OAJSM

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Purpose To assess the effect of low-to-moderate-intensity exercise on specific blood biomarkers and blood acidity in young Saudi Arabian professional soccer players. Methods A total of 43 professional soccer players participated in the current study. A cross-sectional research method was used to compare the changes in the following blood biomarkers: calcium, magnesium, glucose, anion-gap metabolic acidosis, and carbon dioxide, after a range of low-to-moderate intensity training sessions. Measurements were taken in two soccer training sessions (Day 1, and Day 2). The exercise intensity was estimated by heart rate percentage of maximal heart rate. Wilcoxon signed-rank testing was used to analyze the results. Results Significant differences were found between and pre-and post-training sessions for anion-gap metabolic acidosis: Day 1: 12.55 vs 15.4 mmol/L; Day 2: 14.15 vs 16.35 mmol/L; and magnesium: Day 1: 0.82 vs 0.74 mmol/L; Day 2: 0.85 vs 0.74 mmol/L. Exercise caused anion-gap metabolic acidosis concentrations to rise post-training; magnesium levels decreased after training sessions on Day 1 and Day 2. Conclusion The concentrations of anion-gap metabolic acidosis and magnesium were significantly affected by exercise intensity in the subjects, the former rose post-training while the latter fell. More studies are required to investigate the effects of different exercise intensities on other blood biomarkers in soccer players.

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Impact of glossopharyngeal insufflation and complete exhalation on breath-hold performance and physiological parameters in elite skin divers

Bourdas,

Geladas

2024

Eur J Appl Physiol

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The Role of CO ₂ on Respiration and Metabolism During Hypercapnic and Normocapnic Recovery From Exercise

Cited by 6 publications

References 29 publications

Tent versus Mask-On Acute Effects during Repeated-Sprint Training in Normobaric Hypoxia and Normoxia

Tent versus Mask-On Acute Effects during Repeated-Sprint Training in Normobaric Hypoxia and Normoxia

The Effect of Intensity Soccer Training Sessions on Marked Biochemical Indicators of Blood Acidity of Saudi Young Soccer Players

Impact of glossopharyngeal insufflation and complete exhalation on breath-hold performance and physiological parameters in elite skin divers

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The Role of CO 2 on Respiration and Metabolism During Hypercapnic and Normocapnic Recovery From Exercise

Cited by 6 publications

References 29 publications

Tent versus Mask-On Acute Effects during Repeated-Sprint Training in Normobaric Hypoxia and Normoxia

Tent versus Mask-On Acute Effects during Repeated-Sprint Training in Normobaric Hypoxia and Normoxia

The Effect of Intensity Soccer Training Sessions on Marked Biochemical Indicators of Blood Acidity of Saudi Young Soccer Players

Impact of glossopharyngeal insufflation and complete exhalation on breath-hold performance and physiological parameters in elite skin divers

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The Role of CO ₂ on Respiration and Metabolism During Hypercapnic and Normocapnic Recovery From Exercise