Learning Outcomes ALL – Show your understanding of the 2 different types of muscular contraction...
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Transcript of Learning Outcomes ALL – Show your understanding of the 2 different types of muscular contraction...
Learning Outcomes
ALL – Show your understanding of the 2 different types of muscular contraction
SOME – Apply your knowledge of muscles & movement into a table without using the
book
Can you remember the 3 muscle types?
1. They work constantly2. They make up the majority of muscles in the
body3. They are under our conscious control4. They are found in the walls of the heart5. These are muscles you cannot control6. Are found in the walls of the intestines & blood
vessels7. They are also known as skeletal
Answers
1. Cardiac 2. Skeletal/voluntary3. Voluntary4. Cardiac5. Cardiac & Involuntary6. Involuntary7. Voluntary
Separate categories relating to specific movements
FLEXORS EXTENSORSmuscles that bend work against the
the limb at a joint flexors & straightenby contracting a limb by contracting
ADDUCTORS ABDUCTORSthe muscles that move move a limb awaya limb towards the body from the body
When muscles contract they do so in two ways:
Isotonic contractions occur when movement is created.
Concentric – This is when the muscle shortens
Eccentric – When the muscle gradually lengthens and returns to normal length and shape
Fast-paced games require isotonic contractions.
Isometric contractionsIsometric contractions do not create movement – they are working to keep the joint stable. The muscle neither shortens nor lengthens.
This type of contraction occurs in several situations:
To support a weight in a stationary position.
To hold the body in a particular position (e.g., in gymnastics).
Isometric contractions occur in a rugby scrum
© E
MP
ICS
Ltd
Muscle Pair/Group
Movement they allow
Sporting Example
Biceps & Triceps
Kicking a football
Abdominals & Latissimus dorsi
Adduction & Abduction of the arms
Flexing & extending the foot at the ankle joint
Take off phase of any type of jump
MUSCLES WORK IN PAIRS OR GROUPS – THEY PULL BUT NEVER PUSH
Using this fact try & fill in the table relating to muscles & their movement – without the book first
Muscle Pair/Group
Movement they allow
Sporting Example
Biceps & Triceps
Flexion & extension at the elbow
Throwing Movement such as javelin or a ball or a smash in volleyball
Hamstrings & Quadriceps
Flexion & extension at the knee
Kicking a football and running movements
Abdominals & Latissimus Dorsi
Movement around stomach & waist (bending/twisting) they also help keep body upright & straight
Used in specific exercises such as sit-ups. Also to keep body straight in movement
Pectorals & Deltoids
Adduction & Abduction of the arms
Shot Putt, Swimming strokes, Tennis drive
Gastrocnemius / muscle in front of the leg (don’t need to know name)
Flexing & extending the foot at the ankle joint
Take off phase of any type of jump
Homework
• Revise the muscle pairs/groups and find 2 pictures of sporting examples that show the movement involved & describe the movement taking place using KEY TERMS
Email these pictures to Mrs Gregory before next lesson