Course Content

This 10 module online course aims to take your understanding of asymmetry to new levels, the content of which is detailed below:

Module 1: Master Class: Lower Limb Asymmetries

In this module you will:

  • Be provided with a framework that you can use in this and the other modules to improve your theoretical and practical knowledge around asymmetries
  • Be introduced to the why for asymmetry testing and the many different types of asymmetry you can report on
  • Key factors that you need to consider when planning your testing will be reviewed
  • What can be determined as a meaningful asymmetry threshold will be discussed


Module 2: Assessment Zone 1: Lower Limb Asymmetries 

In this module you will:

  • Flesh out the interlimb asymmetry framework introduced in the Masterclass
  • Take a deeper dive into factors that can affect the reliability of your measures
  • Be introduced into a variety of methods that are used to calculate asymmetry
  • Strategies for meaningful interpretation of data will be discussed
  • Finally a case study will be presented to assist your learning


Module 3: Assessment Zone 2: Force Plate Technology 

In this module you will.

  • Forces and vectors
  • What is a force platform?
  • Technical considerations
  • Why the need for force plates?
  • What can force platforms measures?


Module 4: Assessment Zone 3: Bilateral and Unilateral Assessments

In this module you will:

  • Be introduced to single vs double leg CMJ performance
  • Reminded of the benefits of force plate technology
  • The benefits of single and double leg CMJ are then explained
  • A discussion of the variables to monitor ensues
  • Finally, a discussion of some single and double leg data concludes this module


Module 5: Assessment Zone 4: Multi-directional and Multi-hop Assessments

In this module you will:

  • Find out how much the different acyclic multidirectional jumps have in common.
  • Whether there should be different limb asymmetry thresholds based on jump direction.
  • Learn about cyclic multi-hop assessments and their reliability, validity and discriminative ability.
  • Contemplate what tests you might include in a cyclic and acyclic multidirectional testing battery to give thorough insight into limb asymmetry and return to play readiness.

Module 6: Exercise Zone 1: Countermovement Jump

In this module you will:

  • Learn about the different phases of the CMJ
  • The many different variables that can be calculated during these phases will be briefly discussed
  • A mini-exemplar case study of an ACL injured athlete will be introduced with an emphasis on the eccentric phase
  • Finally, a number of exercises will be explained that can be used to address movement issues associated with each phase of the CMJ


Module 7: Exercise Zone 2: Countermovement Jump Advanced

In this module you will:

  • Review the CMJ signal and examine phase deconstruction in more detail
  • Examine the impulse-momentum relationship in relation to jumping
  • Be introduced to the more important variables you should keep an eye on in each of the phases
  • Explore the utility of the impulse asymmetry index
  • Look at some exercises that align with the findings from each impulse asymmetry index


Module 8: Exercise Zone 3: Elastic Enhancement

In this module you will:

  • Be briefly reminded of the various components that contribute to contractile and elastic force capability.
  • Be introduced to the jumps that assess contractile and elastic contribution.
  • Measures of elastic enhancement and eccentric utilization ratios will be discussed.
  • Look at a case study and the many variables captured from a force plate to study asymmetry and eccentric enhancement.
  • Some exercises to address various diagnoses will be detailed.


Module 9: Exercise Zone 4: Slow and Fast SSC Performance

In this module you will:

  • Be briefly reminded of how you can use the three-component model to explain fast and stretch-shorten cycle (SSC) performance
  • Be introduced to the jumps that assess slow and fast SSC performance
  • The reactive strength index (RSI) will be discussed
  • A small case study asymmetry assessment data will be introduced for soccer and cricket players
  •  Some exercises to address various slow vs fast SSC diagnoses will be detailed


Module 10: Exercise Zone 5: Landing Diagnostics and Asymmetry Progression

In this module you will:

  • Be briefly reminded of difference between eccentrics for propulsion and landing, highlighting the greater forces associated with landing
  • Explore information around landing technique and diagnostics is reviewed
  • Force plate landing diagnostics will be briefly introduced
  • A program framework is provided for eccentric strengthening of landing.
  • Thereafter loads of ideas and examples are given for multi-planar eccentric strengthening

Meet Professor John Cronin

Founder of JC Online

PhD (Auckland), BEd, MA (Canada), Dip High Performance Coaching (Canada), Dip PE, Dip Teaching.

About Professor John Cronin

John is a professor in Strength and Conditioning within the Sports Performance Research Institute of New Zealand (SPRINZ), School of Sport and Recreation, at AUT University. SPRINZ is the number one performance based research fund rated sport research institute in New Zealand. 

John has the perfect blend of theory and practical. During his career john has worked with a variety of athletes and teams, ranging from youth development athletes to elite world champion individuals and teams. John has worked with National level cricket teams, netball, rugby union, rugby sevens, discus, boxing, wrestling, gymnastics, shooting, jet skiing and soccer. 

John is now primarily an educator, and has spent the last 20 years at AUT University lecturing in the undergraduate and postgraduate programs for sport and exercise science. He has supervised over 40 PhD and 40 Masters students in the area of strength and conditioning, and has over 400 peer reviewed papers.

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