Muscle contraction
This presentation is the property of its rightful owner.
Sponsored Links
1 / 9

Muscle contraction PowerPoint PPT Presentation


  • 172 Views
  • Uploaded on
  • Presentation posted in: General

Muscle contraction. Year 11 P.E. Types of contractions…. What are the different muscle contractions?. Isotonic – When muscle length changes through a range of motion. Concentric – Muscle shortening (upward phase in bicep curl)

Download Presentation

Muscle contraction

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Muscle contraction

Muscle contraction

Year 11 P.E


Types of contractions

Types of contractions…

  • What are the different muscle contractions?


Isotonic when muscle length changes through a range of motion

Isotonic – When muscle length changes through a range of motion

  • Concentric – Muscle shortening (upward phase in bicep curl)

  • Eccentric – Muscle lengthening while tension is developed (lowering weight in bicep curl)


Isometric very little change in muscle length while tension is developed

Isometric – very little change in muscle length while tension is developed

  • Example: Holding a weight stationary (in one place/still)


Isokenetic

Isokenetic

  • -Similar to isotonic (muscle changes length during the contraction) where they differ is that Isokinetic contractions produce movements of a constant speed. To measure this a special piece of equipment known as an Isokinetic Dynamometer is required. Examples of using isokinetic contractions in day-to-day and sporting activites are rare. The best is breast stroke in swimming, where the water provides a constant, even resistance to the movement of adduction.


Muscle contraction

Sliding Filament Theory:

-method by which muscles are thought to contract.

At a very basic level each muscle fibre is made up of smaller fibres called myofibrils. These contain even smaller structures called actin and myosin filaments. These filaments slide in and out between each other to form a muscle contractions, hence called the sliding filament theory!


Muscle contraction

Stretched/Extended Muscle:

Partially contracted Muscle:

Fully Contracted Muscle:


1 create your own muscle contraction

1. Create your own muscle contraction

  • Research how to show muscle contraction in a visual way using your own bodies…

2. Research sliding filament theory

Create a PP/Poster/Skit/Speech explaining how sliding filament theory works…


Glossary of terms

Glossary of terms

  • Create a Glossary of important terms (key words) at the back of your book…


  • Login