Open Chain Exercise: Difference between revisions
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== Biomechanical and neurophysiological factors == | == Biomechanical and neurophysiological factors == | ||
OKC exercises allow for motion in the distal segment while movement is restricted to a single joint. This typically includes exercises to improve strength and range of motion. <ref name="12">Hyde TE, Gengenbach MS. Conservative management of sports injuries. Jones | OKC exercises allow for motion in the distal segment while movement is restricted to a single joint. This typically includes exercises to improve strength and range of motion. <ref name="12">Hyde TE, Gengenbach MS. Conservative management of sports injuries. Jones and Bartlett Learning; 2007. Available from: http://bit.ly/1OreHbG</ref> | ||
Characteristics of typical non-weight bearing activities: <ref name="12" /> | Characteristics of typical non-weight bearing activities: <ref name="12" /> |
Revision as of 02:51, 22 May 2016
Introduction[edit | edit source]
The Kinetic Chain is a way of describing human movement and it can either be an open kinetic chain or a closed kinetic chain. An open kinetic chain is defined as “a combination of successively arranged joints in which the terminal segments can move freely” Thus an open chain movement is when the peripheral segment/joint of an extremity is free to move. Cite error: Invalid <ref>
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Characteristic |
Open kinetic chain exercises Cite error: Invalid <ref> tag; name cannot be a simple integer. Use a descriptive title
|
Example: seated knee extension[1] |
Stress pattern |
Rotary |
The primary stress to the joint is rotation of the proximal tibia on the distal femur |
Number of joint axes |
One primary |
Knee extension primarily occur in the sagittal plane |
Nature of joint segments |
One stationary, other mobile |
|
Number of moving joints |
Isolated joint motion |
The femur remains stationary while the tibia is moving |
Planes of movement |
One (single) |
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Muscular involvement |
Isolation of muscle group activation |
Minimal muscle co-contraction is used to do the movement |
Movement pattern |
Often non-functional |
Biomechanical and neurophysiological factors[edit | edit source]
OKC exercises allow for motion in the distal segment while movement is restricted to a single joint. This typically includes exercises to improve strength and range of motion. Cite error: Invalid <ref>
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Characteristics of typical non-weight bearing activities: Cite error: Invalid <ref>
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- Increased distraction and rotational forces
- Increased acceleration forces
- Decreased resistance forces
- Increased deformation of joint and muscle mechanoreceptors
- Increased concentric acceleration and eccentric deceleration forces
- Promotion of functional activities
- Requires agonist-antogist force couples
Exercises[edit | edit source]
Open chain exercises are beneficial to target specific muscles. Here some examples.
Open Chain Upper-body Kinetic Exercises [edit | edit source]
- Bench press
- Biceps curl
- Chest-fly
- Lat pull down
- Tricep extensions
Open Chain Lower-body Kinetic Exercises[edit | edit source]
- Seated leg extension
- Terminal knee extension exercises
- Hamstring curl
- Plantar / dorsiflexion (calf pumps)
Clinical Bottom Line[edit | edit source]
Many factors should be considered when deciding to use open kinetic chain exercises versus closed kinetic chain exercises. The patient's condition and stage of rehabilitation will aid in the clinician's judgement of exercise prescription.