- Anatomy of The Spine
- Back Pain in Children
- Caring for your Spine
- Emerging Spinecare Trends
- Evaluation of Spinal Disorders
- Exercise and The Spine
- Intervention - Spinal Disorders
- Intervertebral Disc
- Non Surgical Options
- Nutrition and Spinecare
- Options for Spine Treatments
- Pregnancy and Back Pain
- Prevalence of Spine Disorders
- Sleep and the Spine
- Spinecare Introduction
- Spinehealth and Disease
- Surgical Interventions
- Treatment with Medications
- Understanding Back Pain
Spinecare Topics
Caring for your Spine
Spinal Exercises
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Spinal Exercises
Types of Back Muscles:
There are two primary types of muscle groupings (motor units) within the deep and superficial muscles of the spine. The types are simply classified as types (slow twitch) and type II (fast twitch).
Type I muscle fibers (slow twitch fibers) have muscle cells with a relatively small diameter that are highly excitable and are characterized by fast conduction velocity. They have a greater capacity for endurance work than type II. There are less type I motor units than type II in spinal muscles.
Type II muscle fibers (fast twitch) have a large cell diameter and are relatively less excitable than type I fibers. They have a very fast conduction velocity. Type II fibers are numerous in quantity with high fatigability. They have a greater capacity for brief powerful contractions.
Type I muscle fibers are usually activated first and whereas the larger type II motor unit fibers (fast-twitch fibers) are used less frequency and with more forceful contractions. Maximal efforts cannot be sustained due to the larger percentage of type II than type I fibers. The overload principle of exercise refers to the concept that an individual must increase the resistance, the frequency, or the duration of an activity beyond that which would normally be expected. This overload approach promotes muscle strength and development.
Muscular Benefits of Exercise
The effects of exercise on each of the body cells are significant. The muscular benefits of exercise include:
Increased size of mitochondria.
Increased number of mitochondria.
Increased muscle capacity to use fat as a source of energy.
Increased size of muscle fibers.
Increased content of myoglobin in the muscle fibers.
Increased fat oxidation.
Increased hypertrophy of the muscle, which leads to increased muscle strength and volume.
There are two primary types of muscle groupings (motor units) within the deep and superficial muscles of the spine. The types are simply classified as types (slow twitch) and type II (fast twitch).
Type I muscle fibers (slow twitch fibers) have muscle cells with a relatively small diameter that are highly excitable and are characterized by fast conduction velocity. They have a greater capacity for endurance work than type II. There are less type I motor units than type II in spinal muscles.
Type II muscle fibers (fast twitch) have a large cell diameter and are relatively less excitable than type I fibers. They have a very fast conduction velocity. Type II fibers are numerous in quantity with high fatigability. They have a greater capacity for brief powerful contractions.
Type I muscle fibers are usually activated first and whereas the larger type II motor unit fibers (fast-twitch fibers) are used less frequency and with more forceful contractions. Maximal efforts cannot be sustained due to the larger percentage of type II than type I fibers. The overload principle of exercise refers to the concept that an individual must increase the resistance, the frequency, or the duration of an activity beyond that which would normally be expected. This overload approach promotes muscle strength and development.
Muscular Benefits of Exercise
The effects of exercise on each of the body cells are significant. The muscular benefits of exercise include:
Increased size of mitochondria.
Increased number of mitochondria.
Increased muscle capacity to use fat as a source of energy.
Increased size of muscle fibers.
Increased content of myoglobin in the muscle fibers.
Increased fat oxidation.
Increased hypertrophy of the muscle, which leads to increased muscle strength and volume.
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