Anaerobic Metabolism During Exercise

Spriet, Lawrence L.

doi:10.1007/978-3-030-94305-9_4

Cited by 7 publications

(4 citation statements)

References 78 publications

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“…To better comprehend the molecular mechanisms, it is crucial to grasp the origin of oxidative stress, which is closely linked to the generation of reactive oxygen species (ROS) [143,144]. An elevated oxygen demand is associated with physical activity, especially that which involves an increase in aerobic metabolism [145,146]. There are pros and downsides to increasing oxygen consumption, as it results in more reactive oxygen species (ROS) being produced [147,148].…”

Section: Mechanisms Of Oxidative Stress During Physical Activitymentioning

confidence: 99%

Harmony in Motion: Unraveling the Nexus of Sports, Plant-Based Nutrition, and Antioxidants for Peak Performance

Ayaz,

Zaman,

Radák

et al. 2024

Antioxidants

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The intricate interplay between plant-based nutrition, antioxidants, and their impact on athletic performance forms the cornerstone of this comprehensive review. Emphasizing the pivotal importance of dietary choices in the realm of sports, this paper sets the stage for an in-depth exploration of how stress and physical performance are interconnected through the lens of nutrition. The increasing interest among athletes in plant-based diets presents an opportunity with benefits for health, performance, and recovery. It is essential to investigate the connection between sports, plants, and antioxidants. Highlighting the impact of nutrition on recovery and well-being, this review emphasizes how antioxidants can help mitigate oxidative stress. Furthermore, it discusses the growing popularity of plant-based diets among athletes. It elaborates on the importance of antioxidants in combating radicals addressing stress levels while promoting cellular health. By identifying rich foods, it emphasizes the role of a balanced diet in ensuring sufficient intake of these beneficial compounds. Examining stress within the context of sports activities, this review provides insights into its mechanisms and its impact on athletic performance as well as recovery processes. This study explores the impact of plant-based diets on athletes including their types, potential advantages and challenges. It also addresses the drawbacks of relying on plant-based diets, concerns related to antioxidant supplementation and identifies areas where further research is needed. Furthermore, the review suggests directions for research and potential innovations in sports nutrition. Ultimately it brings together the aspects of sports, plant-based nutrition, and antioxidants to provide a perspective for athletes, researchers and practitioners. By consolidating existing knowledge, it offers insights that can pave the way for advancements in the ever-evolving field of sports nutrition.

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Section: Mechanisms Of Oxidative Stress During Physical Activitymentioning

confidence: 99%

Harmony in Motion: Unraveling the Nexus of Sports, Plant-Based Nutrition, and Antioxidants for Peak Performance

Ayaz,

Zaman,

Radák

et al. 2024

Antioxidants

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“…Creatine plays a critical role in skeletal muscle metabolism as about two-thirds of the creatine in muscle cells is bound to phosphate as phosphocreatine (PCr), a key fuel for rapid energy production. 35,36 Creatine is predominantly stored in skeletal muscle (~95% of total body stores), and accordingly, the main source of dietary creatine is red meat. 37 Interestingly, aerobic and high-intensity interval training (HIIT) do not augment the intramuscular creatine or PCr levels, 1-3 making exogenous creatine supplementation an attractive prospect.…”

Section: Creatinementioning

confidence: 99%

“…Creatine plays a critical role in skeletal muscle metabolism as about two‐thirds of the creatine in muscle cells is bound to phosphate as phosphocreatine (PCr), a key fuel for rapid energy production 35,36 . Creatine is predominantly stored in skeletal muscle (~95% of total body stores), and accordingly, the main source of dietary creatine is red meat 37 .…”

Section: Examples Of Ergogenic Aids That Fit the Classic Approachmentioning

confidence: 99%

Food for thought: Physiological considerations for nutritional ergogenic efficacy

Wickham

Spriet

2023

Scandinavian Med Sci Sports

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Top‐class athletes have optimized their athletic performance largely through adequate training, nutrition, recovery, and sleep. A key component of sports nutrition is the utilization of nutritional ergogenic aids, which may provide a small but significant increase in athletic performance. Over the last decade, there has been an exponential increase in the consumption of nutritional ergogenic aids, where over 80% of young athletes report using at least one nutritional ergogenic aid for training and/or competition. Accordingly, due to their extensive use, there is a growing need for strong scientific investigations validating or invalidating the efficacy of novel nutritional ergogenic aids. Notably, an overview of the physiological considerations that play key roles in determining ergogenic efficacy is currently lacking. Therefore, in this brief review, we discuss important physiological considerations that contribute to ergogenic efficacy for nutritional ergogenic aids that are orally ingested including (1) the impact of first pass metabolism, (2) rises in systemic concentrations, and (3) interactions with the target tissue. In addition, we explore mouth rinsing as an alternate route of ergogenic efficacy that bypasses the physiological hurdles of first pass metabolism via direct stimulation of the central nervous system. Moreover, we provide real‐world examples and discuss several practical factors that can alter the efficacy of nutritional ergogenic aids including human variability, dosing protocols, training status, sex differences, and the placebo effect. Taking these physiological considerations into account will strengthen the quality and impact of the literature regarding the efficacy of potential ergogenic aids for top‐class athletes.

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“…1 Central to these adaptations is the concept of the anaerobic threshold (AT) -a critical point during exercise where lactate production begins to exceed its clearance, marking a shift from aerobic to anaerobic metabolism. 2 Beyond merely signalling the shift to anaerobic metabolism, the anaerobic threshold serves as a practical marker for exercise prescription and training optimization. 3 Understanding the concept of anaerobic threshold dynamics, particularly during incremental exercise, is essential as it reveals the physiological adaptations and limitations that affect the ability of athletes to improve their performance.…”

Section: Introductionmentioning

confidence: 99%

Insight into brain-muscle oxygenation relationship before and after anaerobic threshold using near-infrared spectroscopy: a feasibility study

Nouri Zadeh,

Mah,

Wyss

et al. 2024

Biophotonics in Exercise Science, Sports Medicine, Health Monitoring Technologies, and Wearables V

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Monitoring the oxygenation levels of the prefrontal cortex during exercise is crucial in assessing decision-making abilities and cognitive responsibilities. Near-infrared spectroscopy (NIRS) is a noninvasive optical technique that measures and monitors tissue oxygenation levels in real-time. This study aimed to investigate the feasibility of using NIRS to monitor and compare patterns of cerebral and muscle oxygenation during progressive exercise, both before and after the anaerobic threshold (AT) is reached. A cohort of healthy adults with moderate to high fitness levels participated in an incremental exercise protocol using an indoor exercise bike. Two wearable NIRS sensors were used to monitor tissue oxygenation from the forehead and the thigh vastus lateralis (VL) muscle during the exercise. To estimate the anaerobic threshold (AT) time point, we used the Respiratory Exchange Ratio (RER) value greater than 1.0 as measured by a metabolic cart. The concentration difference between oxygenated and deoxygenated hemoglobin (Hb-diff), which indicates the level of tissue oxygenation, exhibited a significant decrease (p<0.05) in the VL muscle of all participants after the AT was reached. Conversely, there was a significant increase in Hb-diff in the cerebral cortex after the AT (p< 0.05). The results of this study demonstrate the efficient hemodynamics autoregulation of the brain even when the body is affected by metabolic fatigue during high-intensity exercise. This study confirms the feasibility of NIRS to monitor pre-frontal cortex and muscle oxygenation during exercise as a unique application in exercise science.

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Anaerobic Metabolism During Exercise

Cited by 7 publications

References 78 publications

Harmony in Motion: Unraveling the Nexus of Sports, Plant-Based Nutrition, and Antioxidants for Peak Performance

Harmony in Motion: Unraveling the Nexus of Sports, Plant-Based Nutrition, and Antioxidants for Peak Performance

Food for thought: Physiological considerations for nutritional ergogenic efficacy

Insight into brain-muscle oxygenation relationship before and after anaerobic threshold using near-infrared spectroscopy: a feasibility study

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