Active vs Passive Insufficiency Explained Simply

Active and passive insufficiency can be hard concepts to grasp. In this video I explain how biarticular muscles literally "run out of room" when passively lengthening or actively shortening. In active insufficiency, the muscle has maximally shortened and actin & myosin are literally losing purchase on each other. In passive insufficiency, the structure of the muscle (or neuromuscular "tightness") does not allow it to stretch further. This lecture is part of a free, 25-video series covering every facet of structural anatomy. Don’t just memorize human anatomy, master it: https://bit.ly/32kJ5zw

TIME STAMPS
00:00 - Passive insufficiency of wrist extensors
00:50 - Active insufficiency of wrist flexors
01:30 - Comparison between active & passive insufficiency of forearm muscles
01:50 - Characteristics of biarticular muscles
02:18 - Passive insufficiency of hamstrings
03:23 - Active insufficiency of rectus femoris
04:15 - Wrap-up & outtro


#kinesiologyconcepts #activeandpassiveinsufficiency #DrGoodin
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Hey there kinesiology friends! Thanks for checking out this video—it’s part of a playlist that covers every major region of the body: including bony landmarks, joint movements, and muscle actions. You can find that here: https://bit.ly/2GOtjVf

Additionally, check out my Kinesiology Concepts playlist where I spend 5-10 minutes simplifying important kinesiology concepts: https://bit.ly/3mgKy1K

Or stop by my channel for complete teaching series on strength and conditioning, statistics in kinesiology, and sport science: https://bit.ly/2Rlg5kQ

Have a great day and remember to move well, live well, and teach others to do the same!

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Praxis of Strength Training and Conditioning – https://bit.ly/3tOJp5s
Statistics in Kinesiology – http://bit.ly/2OCyAU7
Kinesiology Concepts – https://bit.ly/3mgKy1K
Biomechanics Concepts – https://bit.ly/3iJzGHv
Structural Kinesiology – http://bit.ly/38MuIHg
At-Home Exercise Library – https://bit.ly/2DWbvGQ
At-Home Follow-Along Workouts – https://bit.ly/3k8OQqc

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Dr. Jacob Goodin is a professor of kinesiology at Point Loma Nazarene University (PLNU), and holds a PhD in Sport Physiology and Performance from East Tennessee State University. He has over a decade of experience as a strength and conditioning coach and sport scientist from the high school to NCAA Division I levels. In addition to his role as a professor and research mentor, Dr. Goodin directs the Athlete Monitoring Initiative at PLNU, which provides testing and monitoring services to over 200 athletes yearly as well as research opportunities for kinesiology students.

APPLY TO STUDY UNDER DR. GOODIN:
PLNU Undergraduate Kinesiology Program: https://bit.ly/33jA1KA
PLNU Graduate Sports Performance Program: https://bit.ly/3hs8Pyi

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MUSIC CREDIT
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