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Live Updates: Footwear Biomechanics Symposium; Kananaskis; July 2019

Discussion in 'Biomechanics, Sports and Foot orthoses' started by NewsBot, Jul 28, 2019.

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  1. NewsBot

    NewsBot The Admin that posts the news.

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  2. NewsBot

    NewsBot The Admin that posts the news.

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  3. Craig Payne

    Craig Payne Moderator

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    First up: Thor Besier
    "Personalization of biomechanical models for injury prevention"

    Lots of take homes. Key for me was what I being saying for years about subject specific response and need to personalize models.
    Thor also suggested that RCTs are not the right model to research personalized model …. (not 100% sure I want to agree!)
     
  4. Craig Payne

    Craig Payne Moderator

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    Pieter Van den Berghe:
    "Consolidation of the atypical rearfoot strike pattern in distance runners and linkage to tibial shock"

    Looked at two quite distinct patterns of the centre of pressure of rearfoot strike.
    The called the atypical type as one where COP strikes laterally and stays lateral and move forward fast - they make up 26% (Martin Shortyn quiped at end of presentation that they hardly atypical if they make up that many)

    This group had greater tibial shock parameters.

    Not all heel strikers are heel strikers.

    Martyn SHorten questioned classification as it is really a continuum vs category
     
    Last edited: Jul 28, 2019
  5. Craig Payne

    Craig Payne Moderator

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    Joanna Reeve
    "Effect of Foot Orthoses on soft tissue morphology and skin sensitivity over three months"

    They did not weaken the muscles ...
     
    Last edited: Jul 28, 2019
  6. Craig Payne

    Craig Payne Moderator

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    Julian Fritz: "Foot strike angle calculation during running based on in-shoe pressure measurement"

    Modelling techniques seem to be able to pretty accurately predict the touch down angle.
     
  7. Craig Payne

    Craig Payne Moderator

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    Benjamin Dourthe: "Impact of self-selected customized orthotics on lower limbs biomechanics and fatigue."

    I stopping paying much attention to this a soon as the "customized orthotics" were The Dr Scholl CustomFit !!!!! (who are the subject of a class action law suit over the use of the name customized)

    Apparently they found some trends and nothing was statistically significate …. next
     
  8. Craig Payne

    Craig Payne Moderator

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    Alessandro Garofolini (Karen Miekle): Effect of habitual strike patterns on muscle and bone parameters of the foot.

    Muscle cross-sectional thickness and thickness of Achilles and plantar fascia the same between heel strikers and forefoot strikers

    Bone mineral density of the calcaneus was the same between heel strikers and forefoot strikers (heel strikers --> more impacts; forefoot strikers --> more tension from achilles; both calc's have same density

    Was difference in first metatarsal: RFS had lower trabecular area (cortical areas the same)
     
  9. Craig Payne

    Craig Payne Moderator

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    BTW, I not mentioning all abstracts (the links in abstract book above) - just those I have something to say about.
     
  10. Craig Payne

    Craig Payne Moderator

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    Vanessa Walters: "The influence of running footwear on knee loading post-meniscectomy"

    Used a range of 4 ASICS shoes (including the laterally wedged MelbourneOA) post meniscectomy and data collected running

    "Laterally wedged" MelbourneOA reduced load (decreased adduction moments)
    Cushioned trainer and stability trainer increased adduction moments
     
  11. Craig Payne

    Craig Payne Moderator

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    Dominic Chicoine: Biomechanical effects of 3 different foot orthoses on PTTD

    Compared:
    - shoe only
    - prefab
    - neutral custom
    - custom varus (5 deg medial wedge and 4 mm heel skive (CP comment - why give everyone the same? Foot orthotic dosing!)

    Custom varus device had lower rearfoot eversion

    (Embarrassingly a barefoot clown who had obviously drunk the cool aid and wearing 'The Foot Collective' t-shirt made fool of himself asking a question - some nonsense about all this due coming from the hip; must have forgotten that this was a scientific conference; and they clearly totally confused between "dysfunction" and "tendinopathy" - made a fool of themselves)
     
    Last edited: Jul 28, 2019
  12. Craig Payne

    Craig Payne Moderator

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    Sicco Bus: Cost-effectiveness of offloading-improved custom-made footwear to prevent plantar foot ulcer recurrence in high-risk patients with diabetes

     
  13. Thanks for the updates Craig wish I was there. No issues with the next one though
     
  14. Craig Payne

    Craig Payne Moderator

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    Yep; in your neck of the woods next time
     
  15. Craig Payne

    Craig Payne Moderator

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    Christopher Chao: Changes in foot function between baseline and 1-year follow-up in West Point cadets

    The feet changed over the year!
     
  16. Craig Payne

    Craig Payne Moderator

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    Michael Haley Children’s foot size versus children’s shoe size when they return to store

     
  17. Craig Payne

    Craig Payne Moderator

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    Sarah Ridge: Relationships between footwear, foot structure, and foot muscle strength

    Did not really say a lot other than cheery pick references to say we did not know a lot.
     
  18. Craig Payne

    Craig Payne Moderator

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    Rory Curtis: Daily Activity in minimal footwear increases foot strength

    2 groups - one minimalist one traditional footwear for daily use. Large increase in strength in minimalist group over 6 month follow up.
    Does have implications as intrinsic muscle strength associated with increased risk for falls

    Shame they did the wrong analysis; they did within groups rather than between groups analysis; but looking at data, result would still be the same.
     
  19. Craig Payne

    Craig Payne Moderator

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    Kathryn Mills: Do comfort perception and plantar foot sensitivity change in response to longitudinal exposure to minimal shoe and barefoot running?

     
  20. Craig Payne

    Craig Payne Moderator

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    Simone Cranage: The impact of hard versus soft soled runners on the spatio-temporal measures of gait in young children and a comparison to barefoot walking

    Limited or no differences between sole hardness and gait parameters.
     
  21. Craig Payne

    Craig Payne Moderator

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    Jereme Outerleys: Barefoot, minimal, and shod walking in habituated runners

    Measured: "Spatial-temporal variables (STP) included cadence (CAD), step length (SL), and stance time (ST). GRF variables included peak braking (PBF), the initial peak of the vertical GRF (vGRF) force, and the vertical instantaneous loading rate (VILR). GRF variables were normalized to body weight." between minimal and conventional running shoes in those habituated to the condition.
    Did not really find any differences of note.
     
  22. Craig Payne

    Craig Payne Moderator

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    Isabel Sacco: Minimal footwear in osteoarthritis patients: not just for running

    Looks promising:
    "We will examine how the use of minimal footwear as part of a treatment of patients with knee OA affects knee mechanics and benefits the musculoskeletal system in elderly women with OA suggesting that minimal footwear may have a broader application, more than just for running."
     
  23. Craig Payne

    Craig Payne Moderator

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    Brett Kirby: Influence of performance running footwear on muscle soreness and damage

    Less muscle sorenness and damage with Nike Vaporfly 4%
    "The Nike Vaporfly 4% footwear appears to provide notable protective benefits with regards to attenuating muscular soreness, damage and inflammation"
     
  24. Craig Payne

    Craig Payne Moderator

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    Michael Ryan: The run alternate study: examining the effect of training and footwear variability in the prevention of running pain and injuries

    "The primary objective of this study is to investigate the effect of variable training-session and alternating running shoe type on the risk of injuries and onset of running related pain."

    "Two hundred sixty-four runners were randomly assigned to a progressive 12-week half-marathon training program that involved alternating either footwear or workout type"

    "This is the first study to examine the collective effect of two different training schedules with or without varying footwear models on injury risk and pain perception in recreational runners. There was no difference, compared to our control, in injury risk when recreational runners underwent training involving variable distances and workout intensities. There was neither main effect of alternating footwear on injury risk, nor was there an observed interaction effect. Runners undergoing the same distance and intensity in the same footwear model reported having greater ankle, knee, thigh, hip and low back pain than most, if not all, other groups in this study."
     
  25. Craig Payne

    Craig Payne Moderator

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    Colin Firminger: Effect of longitudinal bending stiffness and running speed on a probabilistic achilles tendinopathy model

     
  26. Craig Payne

    Craig Payne Moderator

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    Sharon Dixon: Changes in lower limb biomechanics and estimated tibial stress with different running footwear


    "This study has demonstrated that a less cushioned and more flexible footwear model (Shoe2) has resulted in greater loading rate of ground reaction force, a measure that has been associated with tibial stress fracture risk"
     
  27. Craig Payne

    Craig Payne Moderator

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    Emily Farina (NIKE): Creating footwear for performance running

    "Footwear with Flat, Moderate, and Extreme curvature carbon fiber plates were created, as well as a no-plate Control. "

    "Adding a stiff plate reduced the net energy loss at the MTP versus a foam Control, yet predominant mechanisms differed across plate curvatures. The Flat plate increased positive work, while the Moderate and Extreme curvature plates decreased negative work."

    "Footwear with an appropriate combination of forefoot plate stiffness and curvature can reduce net energy loss at the MTP without increasing mechanical demand at the ankle.

    Increasing forefoot plate curvature from Flat to Moderate to Extreme reduced net MTP work by a combined influence on the duration of the MTP negative power phase, the MTP flexion moment, and MTP extension velocity.

    With this understanding of the interaction between plate stiffness and geometry, we are able to tune the mechanics of the ankle and MTP joints to enhance running performance."
     
  28. Craig Payne

    Craig Payne Moderator

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    Chris Bishop: Dual density midsole design improves running economy and performance when fatigued


    "Running in the dual density shoe was instantaneously more economical than running in a standard density shoe. This effect increased in the presence of fatigue. Further, running in the dual density shoe when fatigued resulted in better time-trial performance."
     
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