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Description
Flashcards by Camilla Donaldson, updated more than 1 year ago
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Created by Camilla Donaldson
about 10 years ago
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| Question | Answer |
| What are the two main types of striated muscle fibres? | Fast-twitch and slow twitch; which are classified on the basis of speed and contraction. |
| What are slow twitch fibres? | Type l fibres are best suited for aerobic endurance type activities, long intensity-long duration as they have a slower contraction time. |
| What are fast twitch fibres? | Type ll fibres are suited to high intensity, short duration anaerobic exercise. There are two types of type ll muscle fibres: -Type lla/ fast twitch oxidative glycolytic fibres are high intensity fibres which also possess endurance characteristics, suited for middle distance athletes or game players. (tennis player/ 1500m) -Type llb/ fast twitch glycolytic fibres are suited for maximal intensity but short duration activities (100m sprint/shot-put) |
| What are the responses of the muscular-skeletal responses to exercise? (3) | -fibre recruitment -force production -metabolism |
| What are the skeletal responses to exercise? | Greater flexibility occurs at joints, increased heat production causes increased production of synovial fluid which reduces friction at joints. |
| What are muscular adaptations to exercise? | -dependant on the type of training, the muscle fibres will change. -with strength training muscle fibres can increase size by 40-45% -muscles develop a greater contractile force -connective tissue around the muscle will also experience an increase in strength, in turn increasing stability of joints. |
| What are the skeletal adaptations to exercise? | -increased stress on the bone encourages increased strength developing along the direction of the stress in the bone. -greater bone density, as research suggests that the act of a muscle pulling upon a bone creates calcium deposits at the point of the stress. -weight bearing activities encourage a strengthening and thickening of the hyaline cartilage (cushions the joint). |
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