One definition of physical fitness is an improved physiological state that lead to improved health and longevity
The Training Adaptation
The body will only adapt to unaccustomed stress.
In order to stimulate a training response, the stress of a training session must be strong enough to upset the balance of various functional systems of the body the cardiovascular system, the skeletal system, the muscular system etc.
As a result the body reorganizes the various system to re-establish a balanced state.
The reorganization in the training adaptation, often referred to as supercompensation.
The degree of adaptation depends on the degree of imbalance induced
Hard training will induce a greater degree of imbalance and greater degree of adaptation, then easy training
Primary Component of Fitness
In fitness, we also refer to as cardiorespiratory capacity as aerobic capacity.
This capacity includes aerobic endurance, aerobic strength, and aerobic power .
Some of the long-term adaptations of cardiovascular training are:
Decrease resting heart rate
Decrease risk of cardiovascular disease
Increased stroke volume and cardiac out put
Refer to the spectrum of muscular capability.
This includes muscular endurance and muscular strength
Some long-term adaption of improving muscular capacity are
Improved muscular endurance
Increase basal metabolic rate
Improve joint strength and overall posture
This is the range of movement or amount of motion that a joint is capable of performing.
Each joint has a different amount of flexibility.
Some of the long-term adaptations of improved flexibility are:
Improved range of motion
Improved bodily movement
Decreased risk of injury
This is proportion of fat-free mass to fat mass
Some of the long-term adaptation of improving body composition are:
Improve basal metabolic rate
Improved bodily functions and improved BMI.
Decreased is of cardiovascular disease