Benefits of cardiofitness and strength training -- Your Personal Success Board

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Date Posted: 16:06:50 09/15/04 Wed
Author: J.R.Smith, c.f.t.,s.f.t., p.n.s. - ISSA, USSA, ISFN
Subject: Benefits of cardiofitness and strength training

Cardiovascular training greatly increases the body�s functional capacity to transport and use oxygen and to burn fatty acids during exercise. Some of the major changes measured as a result of aerobic exercise include:

Increased mitochondria density in slow twitch muscle fiber, which results in higher energy production from fatty acids. Maximum oxidative capacity develops in all fiber types.

Higher aerobic capacity.

Increase in trained muscle capacity to utilize and mobilize fat, resulting from higher amounts of fat metabolizing enzymes, and increased blood flow.

Greater development of slow twitch muscle fibers, increased myoglobin content, which is an iron-protein compound in muscle, which acts to store and transport oxygen in the muscles.

Resistance training greatly increases the body�s functional capacity for development of explosive strength and maximization of short-term energy systems. Some of the major changes measured as a result of anaerobic exercise include:

Increased size and number of fast twitch muscle fibers.

Increased tolerance to higher levels of blood lactate.

Increases in enzymes involved in the anaerobic phase of glucose breakdown (glycolysis).

Increased muscle resting levels of ATP, CP, creatine, and glycogen content.

Increased growth hormone and testosterone levels after short bouts (45 to 75 minutes) of high intensity weight training.

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