Answered: Is acidosis a limiting factor in…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Related questions

Question

100%

Is acidosis a limiting factor in exercise performance? Why or why not? Does it depend on the exercise type or exercise duration?

Expert Solution

Step 1: limiting factor of acidosis in exercise performance

Yes, acidosis can be a limiting factor in exercise performance and whether it significantly impacts performance depends on several factors including the type and duration of exercise as well as an individual's fitness level and training adaptations.

Acidosis in the context of exercise is often referred to as "exercise-induced acidosis" or "metabolic acidosis."
Exercise-induced acidosis occurs when there is an accumulation of acidic metabolites such as lactic acid and hydrogen ions (H+), in the muscles and bloodstream during intense physical activity.

This acidosis can have both positive and negative effects on exercise performance:

Negative Effects of Acidosis:

Muscle Fatigue: Acidosis can impair muscle function and lead to fatigue. Elevated levels of hydrogen ions interfere with muscle contraction and reduce the force-generating capacity of muscles.
Pain and Discomfort: High levels of acidosis can also lead to the sensation of muscle burn or pain which can be mentally and physically challenging during exercise.
Reduced Energy Production: Acidosis can interfere with energy production pathways potentially leading to decreased performance during sustained, high-intensity exercise.

Positive Effects of Acidosis:

Buffering Capacity: Over time, regular training can improve an individual's buffering capacity, allowing them to tolerate higher levels of acidosis before performance is significantly affected.
Hormonal Responses: Acidosis can trigger the release of hormones like growth hormone and epinephrine which may enhance performance during short bursts of high-intensity exercise.