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Responses to increasing exercise upon reaching the anaerobic threshold, and their control by the central nervous system.

Peinado AB, Rojo JJ, Calderón FJ, Maffulli N - BMC Sports Sci Med Rehabil (2014)

Bottom Line: An increase in CNS and PNS activities are related to changes in ventilation, cardiovascular function, and gland and muscle function.The directing action of the central command (CC) allows for the coordination of the autonomous and motor systems, suggesting that the AT can be identified in the many ways: changes in lactate, ventilation, plasma catecholamines, heart rate (HR), salivary amylase and muscular electrical activity.To avoid this, the CC manages the efferent signals that show the organism that it is running out of homeostatic potential.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Health and Human Performance, Technical University of Madrid, Martín Fierro 7, 28040 Madrid, Spain.

ABSTRACT
The anaerobic threshold (AT) has been one of the most studied of all physiological variables. Many authors have proposed the use of several markers to determine the moment at with the AT is reached. The present work discusses the physiological responses made to exercise - the measurement of which indicates the point at which the AT is reached - and how these responses might be controlled by the central nervous system. The detection of the AT having been reached is a sign for the central nervous system (CNS) to respond via an increase in efferent activity via the peripheral nervous system (PNS). An increase in CNS and PNS activities are related to changes in ventilation, cardiovascular function, and gland and muscle function. The directing action of the central command (CC) allows for the coordination of the autonomous and motor systems, suggesting that the AT can be identified in the many ways: changes in lactate, ventilation, plasma catecholamines, heart rate (HR), salivary amylase and muscular electrical activity. This change in response could be indicative that the organism would face failure if the exercise load continued to increase. To avoid this, the CC manages the efferent signals that show the organism that it is running out of homeostatic potential.

No MeSH data available.


Related in: MedlinePlus

Muscular electrical activity changes during an incremental exercise test. Data unpublished. EMG: electromyography.
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Figure 5: Muscular electrical activity changes during an incremental exercise test. Data unpublished. EMG: electromyography.

Mentions: Finally, muscular electrical activity changes during exercise (Figure 5), along with the lactate concentration, as anaerobic metabolism becomes more prevalent. The increase in lactate production mirrors an increased activity in type II or fast twitch (FT) muscle fibres. According to Burke [29], the activation of these fibres is preferential once the AT has been reached. The increase in their activity explains the increase in muscular electrical activity, and supports the idea that the AT can be identified via the ATEMG.


Responses to increasing exercise upon reaching the anaerobic threshold, and their control by the central nervous system.

Peinado AB, Rojo JJ, Calderón FJ, Maffulli N - BMC Sports Sci Med Rehabil (2014)

Muscular electrical activity changes during an incremental exercise test. Data unpublished. EMG: electromyography.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4016642&req=5

Figure 5: Muscular electrical activity changes during an incremental exercise test. Data unpublished. EMG: electromyography.
Mentions: Finally, muscular electrical activity changes during exercise (Figure 5), along with the lactate concentration, as anaerobic metabolism becomes more prevalent. The increase in lactate production mirrors an increased activity in type II or fast twitch (FT) muscle fibres. According to Burke [29], the activation of these fibres is preferential once the AT has been reached. The increase in their activity explains the increase in muscular electrical activity, and supports the idea that the AT can be identified via the ATEMG.

Bottom Line: An increase in CNS and PNS activities are related to changes in ventilation, cardiovascular function, and gland and muscle function.The directing action of the central command (CC) allows for the coordination of the autonomous and motor systems, suggesting that the AT can be identified in the many ways: changes in lactate, ventilation, plasma catecholamines, heart rate (HR), salivary amylase and muscular electrical activity.To avoid this, the CC manages the efferent signals that show the organism that it is running out of homeostatic potential.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Health and Human Performance, Technical University of Madrid, Martín Fierro 7, 28040 Madrid, Spain.

ABSTRACT
The anaerobic threshold (AT) has been one of the most studied of all physiological variables. Many authors have proposed the use of several markers to determine the moment at with the AT is reached. The present work discusses the physiological responses made to exercise - the measurement of which indicates the point at which the AT is reached - and how these responses might be controlled by the central nervous system. The detection of the AT having been reached is a sign for the central nervous system (CNS) to respond via an increase in efferent activity via the peripheral nervous system (PNS). An increase in CNS and PNS activities are related to changes in ventilation, cardiovascular function, and gland and muscle function. The directing action of the central command (CC) allows for the coordination of the autonomous and motor systems, suggesting that the AT can be identified in the many ways: changes in lactate, ventilation, plasma catecholamines, heart rate (HR), salivary amylase and muscular electrical activity. This change in response could be indicative that the organism would face failure if the exercise load continued to increase. To avoid this, the CC manages the efferent signals that show the organism that it is running out of homeostatic potential.

No MeSH data available.


Related in: MedlinePlus