Chapter 7 - Human Movement Science Flashcards
Describe the Sagittal Plane
- Bisects body L & R
- Movement include: flexion & extension
- Exercise: Biceps curls, squats
Describe the Frontal Plane
- Bisect body front & Back
- Movement inc: Adduction/Abduction, lateral spine flexion, inversion/eversion of foot
- Exercise: Jumping Jacks, Side lunge
Describe the Transverse Plane
- Bisect body upper & lower (tabletop)
- movement inc: internal/external rotation, R+L rotation of head + trunk, Horizontal Add/Abduction
- Exercise: swinging bat/golf club
Question force velocity
Which of the following statements would be accurate with regard to muscle force and velocity during an eccentric muscle action?
As the contraction velocity increases the ability to develop force also increases
The anterior oblique subsystem (name muscles)
Adductor (inner) thigh muscles, obliques, and hip external rotators
Do concentric, eccentric and isometric muscle cards
Answers
What measurement is dependent upon the length of the lever arm and the angle between the force application and the lever arm?
Torque is a measurement (in Newton meters) of the amount of force that can cause an object to move (rotate) around an axis.
What is the scientific term that describes the nervous system’s role in the contract/relax relationship between agonists and antagonists?
Reciprocal inhibition
In what plane of movement do shoulder horizontal adduction and abduction occur?
Transverse
Performing a biceps curl with a dumbbell in the hand is an example of which type of lever?
A third-class lever
has the effort arm between the resistance arm and fulcrum; thus, the biceps curl is a classic example, as the fulcrum is at the elbow joint, the effort is the tendon attachment at the forearm, and the resistance arm is the load at the hand.
How should an eccentric muscle action be described?
The development of muscle tension during lengthening of the contractile tissue
Which muscle group works both eccentrically and concentrically in the sagittal plane during a squat?
Quadriceps
What is the anatomical term that describes something positioned above an identified reference point?
Superior
Which muscle is primarily targeted when performing a biceps curl exercise with the thumb up?
Brachioradialis
During a biceps curl, all of the elbow flexors are recruited; however, changing wrist and forearm position leads to preferential recruitment with the brachioradialis being targeted when curling with the thumb up.
The deep longitudinal subsystem includes which muscle groups? EDIT ME
Hamstrings and erector spinae