There are 2 topics to choose from this week, there should only be 2 total Discus

There are 2 topics to choose from this week, there should only be 2 total Discussion threads.
Only ONE (1) very long thread for each:
Hip
Knee
What then follows the beginning of each thread is a great discussion.
If there is a thread that is already started, please do not start another one on the same topic.
Thank you for your attention to this.
======================================
THREAD 1: HIP
5823_F18_31.jpg
Lying prone, perform hip extension with knee flexion and repeat hip extension with knee extension.
What muscles are being used?
What changes between the motions?
What position of the knee is optimal for gluteus maximus strengthening? Why?
1)download 2) download (1).png 3) download (3).png 4)download (1).png 5) download (4).png
Analyzing the activity of moving from sitting to standing, and the reverse motion of moving from standing to sitting. Perform these activities and then analyze how the subject in Figures 1-5 performed those activities.
Which muscle groups are acting as prime movers?
Describe the type of muscle contractions being used?
Explain when these muscle contractions are occuring.
Discussion Guidelines
THREAD 2: KNEE
5823_F19_23.jpg5823_F19_24.jpg
There are several multijoint muscles in the knee. Discuss these muscles as groups.
When do they lengthen simultaneously over all the joints they cross?
What type of insufficiency may occur?
What if they simultaneously shorten? What changes?
1)download 2) download (1).png 3) download (3).png 4)download (1).png 5) download (4).png
Analyze the activity of moving from sitting to standing, and the reverse motion of moving from standing to sitting. Perform these activities and then analyze how the subject in Figures 1-5 performed those activities.
How does the position of the knee change?
What are the prime movers?
What types of muscle contractions are occuring? When? Why? Explain.
REQUIREMENTS
Student demonstrates consistent correct use of the rules of grammar usage, punctuation, and spelling. Language is clear and precise. Sentences display consistently strong, varied structure.
Excellent support of initial post and responses with evidence (using examples or appropriate supporting evidence).
Very clear that relevant information was understood by incorporation into postings.
Analyzes course concepts, theories or materials correctly, using appropriate examples and/or supporting evidence.
Added several innovative ideas and insight in peer responses. Provided considerable additional insight and relation to core concepts.
Includes at least two of the following components:
Offering advice
Posing a question
Providing an alternative point of view
Acknowledging similar experiences