1.Identify THREE differences in type I muscle fibers compared to type IIx muscle
ID: 187919 • Letter: 1
Question
1.Identify THREE differences in type I muscle fibers compared to type IIx muscle fibers that improve the oxidative capacity of type I fibers. What type of exercise training would increase the relative percentages of type I, IIa, and IIx muscle fibers in humans (2.25 points)?
2.Explain the process of cross bridge cycling from the moment that calcium is released into the sarcoplasm. What is the effect of differing myosin ATPase (2.75 points)?
For the following Kinesiological analysis questions, please refer to the below image depicting a maximal effort squat jump, which entails moving from position A to B:
Is this skill more sequential or simultaneous in nature (0.5 points)?
Is more simultaneous
Are there phases of movement to this skill? If yes, how would you describe the movement phases of this skill (1 points)?
Yes,
Stance: Shoulder Joint- Horizontal abduction and outward rotation, elbow- flexion using the elbow flexor o biceps brachii, and wrist extension- fingers flexed
Down Phase: hip joint-flexion-eccentric, knee joint-flexion-eccentric, ankle joint-dorsi flexion-eccentric.
Up phase: hip joint-extension-concentric, knee joint- extension-concentric, ankle joint-concentric.
Landing phase:
In what plane of motion are the above movements occurring, and about what axis of rotation (1 point)?
Sagittal plane and bilateral axis
The hip and shoulder joints represent what type of joint (0.5 points)?
Ball & Socket
What type of joint is the knee (0.5 points)?
Hinge Joint
Explanation / Answer
Type I muscle fibres are slow-twitch fibres whereas type II fibres are fast twitch
Type I Type II They are called red fibres due to high concentration of myoglobin They are callled white fibres They produce less force but can sustain the same force for a longer period of time They produce higher force and fatigue quickly They are the first muscles that are recruited If type I are not able to genenrate the force require than Type II are recruited.Related Questions
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