Augmented muscle glycogen utilization following a single session of sprint training in hypoxia

Kasai, Nobukazu; Tanji, Fumiya; Ishibashi, Aya; Ohnuma, Hayato; Takahashi, Hideyuki; Goto, Kazushige; Suzuki, Yasuhiro

doi:10.1007/s00421-021-04748-8

Cited by 11 publications

(6 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, running velocity was decreased under hypoxia, suggesting that the reduction in F i O 2 had an effect on participants' effort perception during high-intensity interval training [31]. In this context, it has been shown that, among other mechanisms, environmental hypoxia can increase glucose uptake perhaps to optimize the pathways of adenosine triphosphate synthesis in face of a limited oxidative metabolism [32,33]. Indeed, anaerobic glycolysis contributes to the accumulation of metabolites, leading to a reduction in contractile muscle function [34,35].…”

Section: Discussionmentioning

confidence: 99%

Acute psycho-physiological responses to submaximal constant-load cycling under intermittent hypoxia-hyperoxia vs. hypoxia-normoxia in young males

Behrendt,

Bielitzki,

Behrens

et al. 2024

Preprint

View full text Add to dashboard Cite

Hypoxia and hyperoxia can affect the acute psycho-physiological response to exercise. Recording various perceptual responses to exercise is of particular importance for investigating behavioural changes to physical activity towards health, given that the perception of exercise-induced pain, discomfort or unpleasure, and a low level of exercise enjoyment are commonly associated with a low adherence to physical activity. Therefore, this study aimed to compare the acute perceptual (i.e., ratings of perceived motor fatigue, effort perception, perceived physical strain, affective valence, arousal, motivation to exercise, conflict to continue exercise, and activity enjoyment) and physiological responses (i.e., heart rate (HR), capillary blood lactate concentration (BLC), peripheral blood oxygenation (SpO2), total tissue (tHb) and oxygenated haemoglobin concentration (SmO2) of the vastus lateralis muscle) to 40 min constant-load cycling (60% peak oxygen uptake) under intermittent hypoxia-hyperoxia (IHHT), hypoxia-normoxia (IHT), and sustained normoxia (NOR) in young recreational active healthy males. No differences in the acute perceptual responses were found between conditions (p ≥ 0.059, ηp²≤0.18), while the physiological responses differed. Accordingly, SpO2 was higher during hyperoxia and normoxia in IHHT compared to IHT (p < 0.001, ηp²=0.91), respectively. Moreover, HR (p = 0.005, ηp²=0.33) and BLC (p = 0.033, ηp²=0.28) were higher during IHT compared to NOR. No differences between conditions were found for percentual changes in tHb and SmO2 of the vastus lateralis. These results suggest that replacing normoxic by hyperoxic reoxygenation-periods during submaximal constant-load cycling under intermittent hypoxia reduced the exercise-related physiological stress but had no effect on perceptual responses and perceived activity enjoyment in young recreational active healthy males.

show abstract

Section: Discussionmentioning

confidence: 99%

Acute psycho-physiological responses to submaximal constant-load cycling under intermittent hypoxia-hyperoxia vs. hypoxia-normoxia in young males

Behrendt,

Bielitzki,

Behrens

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The definitions and equations are adjusted with reference to another study [ 31 ]. Fig 2 presents the SmO 2 curve from the fatigue to initial recovery period.…”

Section: Methodsmentioning

confidence: 99%

Effects of compression garment on muscular efficacy, proprioception, and recovery after exercise-induced muscle fatigue onset for people who exercise regularly

Hong

et al. 2022

PLoS ONE

View full text Add to dashboard Cite

Fatigue is a major cause of exercise-induced muscle damage (EIMD). Compression garments (CGs) can aid post-exercise recovery, therefore, this study explored the effects of CGs on muscular efficacy, proprioception, and recovery after exercise-induced muscle fatigue in people who exercise regularly. Twelve healthy participants who exercised regularly were enrolled in this study. Each participant completed an exercise-induced muscle fatigue test while wearing a randomly assigned lower-body CG or sports pants (SP); after at least 7 days, the participant repeated the test while wearing the other garment. The dependent variables were muscle efficacy, proprioception (displacements of center of pressure/COP, and absolute error), and fatigue recovery (muscle oxygen saturation/SmO2, deoxygenation and reoxygenation rate, and subjective muscle soreness). A two-way repeated measure analysis of variance was conducted to determine the effect of garment type. The results indicated that relative to SP use, CG use can promote muscle efficacy, proprioception in ML displacement of COP, and fatigue recovery. Higher deoxygenation and reoxygenation rates were observed with CG use than with SP use. For CG use, SmO2 quickly returned to baseline value after 10 min of rest and was maintained at a high level until after 1 h of rest, whereas for SP use, SmO2 increased with time after fatigue onset. ML displacement of COP quickly returned to baseline value after 10 min of rest and subsequently decreased until after 1 hour of rest. Relative to SP use, CG use was associated with a significantly lower ML displacement after 20 min of rest. In conclusion, proprioception and SmO2 recovery was achieved after 10 min of rest; however, at least 24 h may be required for recovery pertaining to muscle efficacy and soreness regardless of CG or SP use.

show abstract

“…By knowing the energy demands, structure and goals of an upcoming training session, one can devise a suitable carbohydrate feeding strategy. Besides making predictions on total energy turnover during exercise, it is useful to establish the rate of glycogen breakdown, as very high-intensity efforts can substantially reduce muscle glycogen content without very high energy turnover rates [34,176], especially as low glycogen availability can negatively affect performance [30]. Attempts have been made to find ways to non-invasively and cost-effectively measure muscle glycogen concentrations (e.g., using ultrasound); however, to date no independently performed validation has been successful in showing that this method of muscle glycogen quantification provides valid results [177].…”

Section: Personalizing Carbohydrate Intakementioning

confidence: 99%

New Horizons in Carbohydrate Research and Application for Endurance Athletes

Podlogar

Wallis

2022

Sports Med

View full text Add to dashboard Cite

The importance of carbohydrate as a fuel source for exercise and athletic performance is well established. Equally well developed are dietary carbohydrate intake guidelines for endurance athletes seeking to optimize their performance. This narrative review provides a contemporary perspective on research into the role of, and application of, carbohydrate in the diet of endurance athletes. The review discusses how recommendations could become increasingly refined and what future research would further our understanding of how to optimize dietary carbohydrate intake to positively impact endurance performance. High carbohydrate availability for prolonged intense exercise and competition performance remains a priority. Recent advances have been made on the recommended type and quantity of carbohydrates to be ingested before, during and after intense exercise bouts. Whilst reducing carbohydrate availability around selected exercise bouts to augment metabolic adaptations to training is now widely recommended, a contemporary view of the so-called train-low approach based on the totality of the current evidence suggests limited utility for enhancing performance benefits from training. Nonetheless, such studies have focused importance on periodizing carbohydrate intake based on, among other factors, the goal and demand of training or competition. This calls for a much more personalized approach to carbohydrate recommendations that could be further supported through future research and technological innovation (e.g., continuous glucose monitoring). Despite more than a century of investigations into carbohydrate nutrition, exercise metabolism and endurance performance, there are numerous new important discoveries, both from an applied and mechanistic perspective, on the horizon.

show abstract

Augmented muscle glycogen utilization following a single session of sprint training in hypoxia

Cited by 11 publications

References 48 publications

Acute psycho-physiological responses to submaximal constant-load cycling under intermittent hypoxia-hyperoxia vs. hypoxia-normoxia in young males

Acute psycho-physiological responses to submaximal constant-load cycling under intermittent hypoxia-hyperoxia vs. hypoxia-normoxia in young males

Effects of compression garment on muscular efficacy, proprioception, and recovery after exercise-induced muscle fatigue onset for people who exercise regularly

New Horizons in Carbohydrate Research and Application for Endurance Athletes

Contact Info

Product

Resources

About