Physical fitness 2 Flashcards
1
Q
definition of power
A
Maximum force_ a muscle can generate in _minimum time
2
Q
Repetitive contractions result in metabolic adaptations to supply a continuous supply of energy, thus…
A
Increased # of mitochondria
Increased stored glycogen & fats
Increased aerobic enzymes especially for fat metabolism, thus conserving muscle glycogen
Increased capillaries
3
Q
What is flexibility?
A
Range of motion_ (ROM) about a joint, or series of joints
4
Q
What limits ROM
A
- Bony articulations_
-
Soft tissue
• connective tissue
• muscle -
Neural reflex activity
myotatic (stretch) reflex
5
Q
Factors Affecting Flexibility
A
age gender muscle bulk injury hypermobility improper strength training improper stretching poor posture sedentary life excessive body fat
6
Q
3 phases of PNF
A
- Slowly stretch muscle to its end range
- Isometrically contract muscle for approx 7 seconds
- passively increase stretch of muscle
should be slow, relaxed and pain free
7
Q
How long should you stretch
A
5-10 min to maintain ROM
10-30 min to increase ROM
