CircSci

Aaron Koz

A podcast on the science of circus training and performing. Each episode hones in on different areas of practically applied research to use in your own circus training. If you're curious about a subject or question related to circus training, email your questions (which WILL be answered) to: [email protected]. If you've got comments or feedback, see the email above! Check out aaronkoz.com/thoughts for long-form posts looking at the research and how it applies to circus and aerial training.

  • 1 hour 12 minutes
    Master Your Meathook with Garrett Schniewind

    CircSci is back with another episode...this one all about meathooks. Did you think people couldn't talk about meathooks for an hour?


    You thought wrong!


    Garrett (@garrettmovement) and I cover risk factors that come up with entering, exiting, and holding meathooks, how to program meathooks over the long run, what meathooks SHOULD look like and more.


    Did you ever wonder how much to train meathook at first? Total training volume in meathook will vary, but how do we know what too much is for our lil' obliques and smushed intercostals.


    What about the key technical ideas that make a meathook? Will all safe and efficient meathooks look the same?


    Listen to find out!


    12 March 2025, 11:21 pm
  • 1 hour 1 minute
    Are There Strength & Performance Changes During Your Hormonal Cycle? Featuring Dr. Lauren Colenso-Semple, Ph.D., CSCS

    Have you ever wondered if you might benefit from structuring your training based on your hormonal/menstrual cycle?


    In this episode, we answer that questions with Dr. Lauren Colenso-Semple. We discuss what she found in her Ph.D research (and the broader literature) when it comes to hormonal cycle changes, performance and strength metrics, and injury rates.


    We also touch on how the hormonal cycle interacts with hypermobility, and what, if anything should change in response to that.


    Listen in to find out if you can (or should) adapt your training to reflect what the science says about cycle-based changes!


    Disclaimer: everyone's experience of the changes that occur during a hormonal/menstrual cycle is different, but regardless of what the literature says on strength and performance, how you feel is likely going to be quite individualized.


    Comments, questions, concerns? Email me at [email protected]


    Check out Lauren below:

    MASS (Monthly Applications in Strength Sport)

    Lauren's research

    @drlaurencs1


    Upcoming opportunities to work with me:

    Straps & Rope Retreat

    Straps & Handstands Retreat

    L1 Aerial Straps Teacher & Performer Training


    Lauren Colenso-Semple Ph.D., CSCS


    • Ph.D. Integrative Physiology (McMaster University), M.S. Exercise Science (University of South Florida), B.A. Psychology, Nutrition (State University of New York at Buffalo).
    • Regularly publishes peer-reviewed articles in exercise science journals with a focus on female physiology and endocrinology, sex-based differences and mechanisms of muscle growth.
    • Expert fitness professional with years of practical experience and certifications in strength & conditioning, sports nutrition, group fitness, and personal training
    10 October 2024, 12:07 pm
  • 52 minutes 30 seconds
    Prenatal Weight & Aerial Training - Considerations, Contraindications & Pelvic Floor Health ft. Kerry Wee (of The Expecting Aerialist podcast)

    Who doesn’t need a circus podcast crossover?!


    Kerry is the host of The Expecting Aerialist, LA-based aerial silks coach, and more. We nerd out on weight training for pregnant people and about pelvic floor health for every human.


    There's a lot of good stuff in here with some references to the American College of Obstetricians and Gynecologists, recent research, and my experience as an aerial coach (and as someone who has worked with a pelvic floor physio!). But I am NOT coming at this episode from a place of being a human that can or will ever get pregnant.




    This is part one of our conversation. Find her @kerrywee1


    As I say 3492 times in the episode, if you're considering having a kid(s) and want to continue training aerial, please consult with an OBGYN and/or pelvic floor physical therapist for individualized guidance.




    9 May 2024, 8:14 pm
  • 1 hour 17 minutes
    Pain Science and Management for Circus Artists w/Beth Shum, HCPC, MCSP , Circus Physio, and NHS Pain Science Specialist

    Beth HCPC, MCSP, (in the US this would be kind of akin to DPT) and I discussed pain science and how it comes into play for professional and recreational circus artists and aerialists answering these questions below:


    Pain perception - how do you describe and define pain? 


    What is the bare minimum you think a circus artist, coach, and physio should know about pain (and how to assess it) as it relates to circus artists? 


    How do we know what is “okay” pain vs. bad pain? 


    What are patterns of pain among circus artists and aerialist?


    How does fear interact with pain in circus and aerial?


    When circus artists are experiencing pain, how can we expect that to impact performance and motor control? 


    What trends do you see in your practice among circus artists? Is there more pain masking, endurance coping, or avoidance coping? 


    What are the pros and cons of pain masking vs. distraction as analgesic?


    What are some methods for addressing pain?


    Sleep → how do we support sleep 


    26 April 2024, 3:08 pm
  • 1 hour 35 minutes
    Creativity and Variability in Circus Training and Pedagogy ft. Adam Woolley

    You'll just have to listen to this one for the full description but below are some key take-aways!


    Takeaways:


    Incorporating variability and creativity in circus training and teaching is essential for skill development AND personal expression.

    Pedagogical approaches should be rooted in beliefs about learning and should align with the values of the coach and the student.

    Creativity can be fostered in students through intentional scaffolding and opportunities for personal input.

    Variability and creativity are distinct concepts, with variability being a necessary prerequisite for creativity.

    Balancing risk and creativity is important, and coaches should consider the physical, psychological, and social risks involved of including variability and NOT including variability.

    Individual journeys in circus are valuable, and there is no one-size-fits-all approach to training and performing.


    Adam's resources are here! And the Montreal Straps Lab early bird registration is here!



    Chapters


    00:00 Introduction and Background

    05:16 Influence of Other Disciplines on Circus Training

    11:09 Gymnastics' Influence on Circus Handstand Training

    14:51 The Origins of Circus Technique

    21:04 Challenging Traditional Handstand Coaching

    25:16 The Importance of Task Orientation in Teaching Handstands

    28:54 The Impact of Performative Risk Assessment on Teaching

    33:58 Including Students in Risk Assessment

    39:35 Challenging Preconceived Notions in Teaching Circus

    45:23 The Blurry Line Between Risk and Safety in Circus

    49:44 Letting Go of Strict Teaching Methods and Embracing Self-Expression

    50:13 Constructing Skills with Safety and Creativity

    51:33 Pedagogical Approaches and Beliefs about Learning

    53:29 Incorporating Variability and Creativity in Teaching

    55:39 Fostering Creativity in Students

    57:10 Scaffolding Creativity in Teaching

    59:52 Understanding Variability and Creativity

    01:00:30 Different Definitions of Creativity

    01:03:14 The Value System and Beliefs about Creativity

    01:06:32 Balancing Risk and Creativity

    01:09:49 Introducing Variability and Creativity from Day One

    01:14:10 Expanding Variability in Straps and Other Apparatus

    01:18:55 The Relationship Between Variability and Risk

    01:25:46 The Influence of Social Media on Circus Culture

    01:29:51 Using Social Media to Promote Counter-Cultural Messages

    01:35:46 The Importance of Individual Journeys in Circus

    01:43:44 Making Small Changes in Teaching



    29 February 2024, 10:07 pm
  • 51 minutes 4 seconds
    Rehab Yourself as a Circus Artist & Movement Optimist, featuring Greg Lehman, BKin, MSc, DC, MScPT

    This conversation explores the concept of movement optimism and its application in circus and aerial training. The discussion covers topics such as biomechanics and performance in circus, the task-based approach to training, managing pain and injury, and addressing beliefs about joint misalignment. The importance of individual differences in training capacity and the role of minimal effective dose in recovery are also explored. The conversation emphasizes the need for a personalized approach to training and the importance of self-management in the circus and aerial fields. In this conversation, Greg Lehman and I discuss the principles of exercise prescription and rehabilitation for circus artists and aerialists. Greg emphasize's the importance of focusing on individual goals and what the person wants to return to doing.

    He also highlights the concept of comprehensive capacity, where exercises should aim to improve overall strength and function rather than targeting specific dysfunctions. The conversation concludes with a discussion on finding the minimum effective dose and overcoming fear when starting new movements.

    Takeaways:

    • Movement optimism promotes a positive and optimistic view of human function and resiliency.
    • Biomechanics in circus and aerial training should be viewed in the context of performance and function rather than adhering to strict biomechanical ideals.
    • Pain and injury in circus can be managed by understanding individual differences, focusing on task-based training, and addressing beliefs about pain and joint misalignment.
    • Recovery and rehabilitation in circus can benefit from a minimal effective dose approach, tailoring training to individual needs and goals.
    • Self-management and self-rehabilitation can be effective in circus training, but access to quality healthcare and professional guidance is also important. Prescribe exercises based on the individual's goals and what they want to return to doing.
    • Focus on comprehensive capacity by improving overall strength and function.
    • Specificity is needed in certain cases, such as ACL tears, but general approaches can often be effective.
    • Find the minimum effective dose by identifying what the person sucks at and what hurts.
    • Overcome fear by starting slow and gradually building up confidence in new movements.


    Find more about Greg, his work, and his podcast here!


    Chapters:

    00:00 Introduction and Background

    02:10 Therapeutic Neuroscience and Movement Optimism

    04:26 Biomechanics and Performance in Circus

    06:34 Task-Based Approach to Training

    07:49 Balancing Goal-Oriented Training with Secondary Activities

    09:24 Individual Differences in Training Capacity

    11:44 Developing Attributes for Specific Skills

    14:29 Managing Pain and Injury in Circus

    18:16 Hypermobile Individuals and Risk Prevention

    21:39 Addressing Beliefs about Joint Misalignment

    25:23 Managing Pain Perception in Circus

    28:26 Self-Management and Minimal Effective Dose

    32:38 Accessing Quality Healthcare and Self-Rehabilitation

    36:28 Movement Optimism and Circus Training

    39:15 Minimal Effective Dose for Recovery

    42:54 Challenges in Rehab and Recovery

    43:18 Testing Minimal Effective Dose on Oneself

    43:27 Prescribing Exercises Based on Goals

    46:09 The Importance of Comprehensive Capacity

    48:22 When Specificity is Needed

    51:51 Finding the Minimum Effective Dose

    53:09 Overcoming Fear and Starting Slow

    16 February 2024, 1:16 am
  • 56 minutes 56 seconds
    The Utility of Movement Screens In Aerial/Circus ft. Dr. Monica Warren (Epidemiologist & Physical Therapist) and Dr. Monica Lininger (Athletic Trainer and Ph.D in Measurement and Evaluation).

    In this episode, I had two amazing researchers, Dr. Meghan Warren (epidemiologist/physical therapist from the Patient Centered Outcomes Research Institute, and research specialist/athletic trainer, Dr. Monica Lininger from NAU, who extensively researched the Functional Movement Screen and movement screens in general. Movement screens can be incredibly useful clinical tools, especially depending on patient population (for athletes who may need a relatively objective test to view their movement quality from), but they also have some limitations. In this episode, we cover what movement screens are useful for, how they maybe shouldn't be used, as well as the potential impact of asymmetries as more predictive of injury than low scores on a movement screen.

    21 May 2021, 8:00 am
  • 55 minutes 37 seconds
    Motor Learning and Skill Acquisition, Unilateral vs. Bilateral Exercises, and More is not More ft. Henri Hanninen

    New season of CircSci is dropping y'all! Sorry for the delay between 'sodes (I've been slammed with programs and more online coaching resource development! If you want to help support the time that goes into interviewing and editing these episodes, definitely consider contributing via Patreon.com/circkoz (where you'll also get video tutorials and more!).  Anyway, Henri and I get up to some pretty deep discussions on how motor learning and skill acquisition occurs from a neuronal and proprioceptive perspective as well as practical examples of how you might program strength drills versus skill work. This one probably could do with a few listens to get the most out of it!  "'Just because we had to suffer doesn’t mean everyone after us should suffer too. The future is supposed to be better than the past.' About Henri: Henri Hänninen (B.Sc) is a coach, an educator and a circus artist.

    He is currently finishing up his M.Sc. studies in science of sports coaching and fitness testing, having completed minor studies in chemistry, molecular biology and cognitive neuroscience. His thesis is going to examine retention of a motor skill during a training break.

    Henri has years of experience teaching parkour, aerial silks and floor acro, as well as performing as an aerialist. He's also a certified academic personal trainer.

    At the moment he's working mostly as a strength and conditioning coach and an educator, bringing current evidence-based information to coaches, trainers and artists.

    Having studied extensively and coached national level athletes and professionals in several completely different sports and disciplines (from figure skating to powerlifting, pole dance to hammer throw, parkour to aerial...), his specialty is analyzing the demands of a sport/discipline and designing training programs to meet those demands.

    He's a strong advocate of sustainable practice and information-based decision-making, fighting against harmful traditions.

    If you're curious about the online 40+ hour Aerial Straps Level 1 Teacher Training, you can find out more here!

    14 May 2021, 10:00 am
  • 48 minutes 26 seconds
    Pelvic Floor Health For Aerialists: How to Tell if an Exercise is too Hard, You're Breathing Properly, and More! Ft. Mariah Frank, DPT, Pelvic Floor Specialist

    I had the pleasure of interviewing Mariah before the holidays - they are an awesome physical therapist who specializes in pelvic floor health for queer, trans, and other under-served populations, though works with all sorts of athletes. They work at Bethany Physical Therapy, but offer monthly pelvic floor focused physio classes online. We covered some commons signs and symptoms of pelvic floor dysfunction, ways to assess whether we are breathing properly during a movement (and how to scale if we aren't to avoid pelvic floor issues), and more!

    PHYSICAL THERAPIST

    • Certified Manual Physical Therapist

    Pronouns: They, Them, Theirs

    Mariah received their Doctoral Degree in Physical Therapy and Bachelor’s Degree in Exercise Physiology from Marquette University in Milwaukee, Wisconsin. As a collegiate cross country and track and field athlete they became an anatomy enthusiast with an admiration for the body’s capacity to perform and heal.

    Mariah has a strong interest in working with patients that have a history of chronic pain, orthopedic concerns, and pelvic floor dysfunction. They are particularly passionate about providing care for the LGBTQIA+ community and other under-served populations. Mariah experiences joy in helping their patients return to the life they love and is always their fiercest advocate.
    Mariah stays up to date on the latest research to ensure the best care for their patients. They are pursuing their Pelvic Rehabilitation Practitioner Certification through Herman & Wallace and their Manual Therapy Certification through the North American Institute of Orthopedic Manual Therapy (NAIOMT).

    Mariah grew up in Wisconsin, has traveled extensively, and is currently enjoying all that Oregon has to offer. On the weekends they enjoy hiking, cooking, and exploring used bookstores.

    15 February 2021, 1:30 pm
  • 1 hour 17 minutes
    Tendon training and adaptation (in circus and hyper mobility) for performance and recovery ft. Dr. Keith Baar, Molecular Biologist

    Y'all are going to love this one. Keith Baar joined myself and special guest co-host Max March-Steinman on this episode all about the molecular properties of tendons, their adaptive responses, and how to appropriately modify your training techniques depending on if you're interested in power, strength, range of motion (and maybe some things not to do), or stability (in the case of hypermobility). We also briefly touch on the dietary sources of the nutrients that support healthy tendons. During the episode, Keith explains a concept using a visual so here is a link to Keith Baar's tendon shearing demonstration.

    In this episode, I briefly mention the Aerial Straps Level 1 Teaser that Max, Bethany, and I have put together to give an intro into straps - you can find a link to the FREE download here. It includes an introduction to straps, vocabulary, conditioning exercises, and introductory skills and progressions. Again, it is FREE, but if you download it for the recommended price, you’ll receive a discount code on the full Level 1 manual (which will cover some tendon-specific drills to reset tendon length upon completion of a training session).

    Please share the free teaser and this episode with anyone you think may appreciate what's covered in them!

    3 February 2021, 4:01 pm
  • 1 hour 4 minutes
    Ep 8 - Coaching Styles and Outcomes, Weight Training for Circus, and Fear-based RPE ft. Dave Tilley.

    Today on the podcast, we've got an interview with Dr. Dave Tilley, who runs his own podcast (@SHIFTMovementScience), we cover a variety of topics related to gymnastics and circus training as well as coaching, culture and scandals. We discuss how we can move the sport in a better direction, what are the mistakes that people are making still, and how we balance keeping someone safe, moving towards high performance and staying up to date with new ideas.

    As always, to grab a free/sliding scale copy of the Couch To Aerial Fitness 12 Week Program go here, and to support the show, please share if you're enjoying the show on social media and check out the CircSci patreon (which also has loads of articles and thoughts around the science of circus training and tutorials!).

    Dave Tilley is: a Physical Therapist who graduated in 2013 from Springfield College. Dave comes from an extensive gymnastics background, being a former athlete and currently still coaching optional level gymnastics in Boston. Dave was a competitive gymnast for 18 years, 4 of them collegiately as part of the Springfield College Men’s Team. Dave has also been coaching gymnastics for 12 years, being involved in beginner, national, and elite levels. His unique background as a former athlete and current coach gives him a one of a kind approach for the performance and rehabilitation of gymnasts. He has successfully treated some of the most talented high school, collegiate, and junior elite level gymnasts in the country. Along with gymnastics, Dave enjoys treating athletes of all sports as well as the specialized treatment of Olympic Weightlifters and CrossFit athletes. He has worked with regional and national level Olympic Weightlifters, as well as Regional and Games level CrossFit Athletes.

    Along with treating in the clinic, Dave is also the CEO/Founder of  “SHIFT Movement Science and Gymnastics Education”. This company was started in 2014 to help educate those involved in gymnastics, medical fields, Olympic weightlifting, CrossFit, and more about optimal performance and preventative rehabilitation strategies. By combining his roles as a healthcare provider, current coach, and athlete Dave looks to help remold the gymnastics world with current, scientifically backed principles that optimize a gymnast’s long-term potential. His new forward-thinking ideas have been nationally recognized with members of USA Gymnastics, being implemented into JO, Collegiate, and Elite level programs. Dave travels to speak both nationally and internationally at various events across the country including Make It Right Elite Gymnastics Camp, USAG Regional, and National Congress, Power Monkey Camp in Tennessee, and has consulted with many NCAA Division 1 Men’s and Women’s Gymnastics.

    21 January 2021, 6:51 pm
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