Module 5 Lower Extremity Functional Activity
Purpose:
Analyzing a functional activity: This activity combines all of the lower extremity activities and
requires you to analyze the actions of all the joints in the lower extremity during a functional
activity – moving from sitting to standing and returning to sitting.
Assignment Instructions
1.
In each chapter of the Lippert Lab Manual, there is a functional activity analysis. You will
observe the movement at each joint as you progress through the lower extremity. Each
chapter asks directed questions which should help you analyze what is occurring at the
joint during standing and sitting actions:
◦
Hip – pp. 222 and 223, question 9
◦
Knee joint – pp. 238 and 239, question 10
◦
Ankle and foot – pp. 262 and 263, question 14
Hip- Question #9;
A- Describe the position of the hip when the subject is;
1) Moving from sitting to standing- Your hip is in extension.
2) Moving from standing to sitting- Your hip is flexed.
B- Which muscle groups are acting as prime movers while;
1) Moving from sitting to standing- The hip extensors.
2) Moving from standing to sitting- The hip flexors.
C- Describe the type of muscle contraction being used when;
1) Moving from sitting to standing- Concentric muscle contraction.
2) Moving from standing to sitting- Eccentric muscle contraction.
D- Explain your answers to part C;
1) Moving from sitting to standing- As the person moves from sitting to standing their hip
extensors are working against gravity, thus trying to make the person stand.
2) Moving from standing to sitting- As the person is trying to sit, the movement is eccentric
because the hip flexors are working with gravity. If they did not do this the person would just
collapse into the chair, instead of slowly sitting into it.
E- Is this an open or closed chain activity?;
This is a closed chain activity. This would be because as the person stands up there feet stay
fixed on the floor, and only the upper portion of their body moves.
Module 5 Lower Extremity Functional Activity
Knee Joint- Question #10;
A- Describe the position of the knee when the subject is;
1) Moving from sitting to standing- The knee is in extension.
2) Moving from standing to sitting- The knee is in flexion.
B- Which muscle groups are acting as prime movers in the following motions;
1) Moving from sitting to standing- The knee extensors are acting as prime movers when
moving from sitting to standing.
2) Moving from standing to sitting- The knee flexors are acting as prime movers when moving
from standing to sitting.
C- Describe the type of muscle contraction being used, when and why?
1) Moving from sitting to standing- Concentric muscle contraction.
2) Moving from standing to sitting- Eccentric muscle contraction.
D- Explain your answers to part C;
1) Moving from sitting to standing- As the person moves from sitting to standing their knee
extensors are working against gravity, thus trying to push the person up to stand.
2) Moving from standing to sitting- As the person is trying to sit, the movement is eccentric
because the knee flexors are working with gravity. If they did not do this the person would most
likely fall, instead of slowly sitting into the chair.
Module 5 Lower Extremity Functional Activity
Ankle & Foot- Question #14
A- Describe the positions of the ankle when the subject is;
1) Moving from sitting to standing- The ankle is in dorsiflexion.
2) Moving from standing to sitting- The ankle is in dorsiflexion.
B- Which muscle groups are acting as prime movers in the following motions?;
1) Moving from sitting to standing- The tibialis anterior muscle.
2) Moving from standing to sittingC- Describe the types of muscle contractions being used in the following motions;
1) Moving from sitting to standing- The ankle and foot are isometrically contracting.
2) Moving from standing to sitting- The ankle and foot are isometrically contracting.
D- Explain your answers to part C;
1 & 2) Moving from sitting to standing- When you stand up your ankle and foot stay in a fixed
position, and do not move. Thus the ankle and foot are neither working with or against gravity.
Body
Page,
Area
Question
Hip
Knee
Marks
Answer
Page 222 and
2
A. 0
223, question 9
2
B. .5
2
C. 2
2
D. 1.5
1
E.1
Page 238 and
2
A. 1.5
239, question 10
2
B. 1
2
C. 2
2
D. 1
Ankle and
Page 262 and
2
A. 1.5
foot
263, question 14
1
B. 0
1
C. 0
2
D. 0
Total Marks
23
Mark Achieved
Module 5 Lower Extremity Functional Activity
12