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Short Foot Muscle Exercises and Foot Posture in Runners

Discussion in 'Biomechanics, Sports and Foot orthoses' started by NewsBot, Jun 24, 2016.

  1. NewsBot

    NewsBot The Admin that posts the news.

    Articles:
    1

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    The Influence of Plantar Short Foot Muscle Exercises on Foot Posture and Fundamental Movement Patterns in Long-Distance Runners, a Non-Randomized, Non-Blinded Clinical Trial
    Iwona Sulowska, Łukasz Oleksy, Anna Mika , Dorota Bylina, Jarosław Sołtan
    PLoS One. 2016 Jun 23;11(6):e0157917
     
  2. Admin2

    Admin2 Administrator Staff Member

  3. Craig Payne

    Craig Payne Moderator

    Articles:
    6
    Re: Short Foot Muscle Exercises on Foot Posture in Runners

    Fail.
    Multiple comparisons and no Bonferroni adjustment because of that. They did not find what they claimed they did.
     
  4. Craig Payne

    Craig Payne Moderator

    Articles:
    6
    Added it to my table on short foot exercise
     

    Attached Files:

  5. Craig Payne

    Craig Payne Moderator

    Articles:
    6
    just realized that the results they claim they got ( but didn't as they did not do the adjustment for the multiple comparisons) was a within groups analysis and not an analysis of comparison to the other group or even non-existent control group. Another fail. Next.
     
  6. NewsBot

    NewsBot The Admin that posts the news.

    Articles:
    1
    Effect of corrective exercises programme among
    athletes with flat feet on foot alignment factors

    S Sivachandiran and Dr. G Vinod Kumar
    International Journal of Physical Education, Sports and Health 2016; 3(6): 193-196
     
  7. Craig Payne

    Craig Payne Moderator

    Articles:
    6
    Not randomised. Fail.
    No data on characteristics of each group. Fail.
    Most of analysis was within groups and not between. Fail.
    Multiple comparisons with no Bonferroni adjustment. Fail.
    Next.
     
  8. scotfoot

    scotfoot Active Member

    If the short foot exercise changes foot posture does it also change plantar pressures during gait ? If it causes reduced pressure under the pads of the toes during gait then is it a sound exercise ?
    I ask these questions because I can't find any studies which provide answers .
    Studies which look at the short foot exercise and balance , navicular height and other measures yes , but gait and plantar pressures, no .
    What am I missing ?

    Gerry
     
  9. Craig Payne

    Craig Payne Moderator

    Articles:
    6
    No one has done those studies; and those studies that have been done on the short foot exercise are really badly done (see above).
     
  10. scotfoot

    scotfoot Active Member

    Regarding the study above "Effect of corrective exercises programme among
    athletes with flat feet on foot alignment factors" p
    age 196 contains a series of figures under the heading -

    Figures of Pre and Post Test on Angle of Arch Foot (AAF),
    Navicular Height (NAH) and Medial Longitudinal Arch
    (MLA) Of Flat Feet Athletes

    Its anecdotal on my part but the top figure appears to show a print of a foot (before and after ) with a more defined MLA after the exercise protocol . But look at the prints left by the toe pads in the after picture . It looks to me like less pressure is being applied by the toes .Which may mean higher plantar pressures elsewhere .If carried over into gait is this a good thing ? Should exercise protocols that change foot posture not also take into account the effect these changes have on plantar pressures during gait .

    Gerry
     
  11. Craig Payne

    Craig Payne Moderator

    Articles:
    6
    You are probably right; it just reflects just how much we do not know about the SFE
     
  12. scotfoot

    scotfoot Active Member

    My understanding of the short foot exercise is that it involves moving the MTFJ' s towards the heel by contracting the plantar intrinsics . The exercise further involves keeping the ball of the foot on the ground and the toes straight and "relaxed " .
    However ,one of the principle roles of the plantar intrinsics is the plantar flexion of the toes and so it seems to me that if these muscles are activated and the plantar pressure under the toes is not increased (causing the ball of the foot to lift from the ground especially when the exercise is carried out in a seated position ) then a second group of muscles must be in play contributing to the shortening of the foot but resisting toe plantar flexion . In my opinion this muscle group can only be the toe extensor muscles .

    So is the co- activation of the toe flexors and extensors something that is usually seen during gait in a person not habitually using the short foot exercise . Zelik et al 2015 (1) ,below , seems to suggest not .

    I would suggest therefore , that the short foot exercise might sacrifice function for posture and cause undesirable plantar pressure changes under the toes (reduced ) and ball of the foot (increased ) during gait .


    (1)
    Coordination of intrinsic and extrinsic foot muscles during walking.

    https://www.ncbi.nlm.nih.gov/pubmed/25420444
    by KE Zelik - ‎2015 - ‎Cited by 9 - ‎Related articles
    Eur J Appl Physiol. 2015 Apr;115(4):691-701. doi: 10.1007/s00421-014-3056-x. Epub 2014 Nov 25.Coordination of intrinsic and extrinsic foot muscles during ...

    Gerry
     
  13. scotfoot

    scotfoot Active Member

    In general ,and with regard to the complex structure that is the foot , do neuromuscular re-education exercises re-educate or do they re-task muscles away from their original function/s ? Are such exercises really just borrowing from Peter to pay Paul ? At the risk of repeating what has already been said on this thread , plantar pressure oriented gait studies seem to me like a good way of evaluating these types of exercises . Even just one !

    Gerry
     
  14. NewsBot

    NewsBot The Admin that posts the news.

    Articles:
    1
    Can Foot Exercises Alter Foot Posture, Strength, and Walking Foot Pressure Patterns in People with Severe Flat Foot?
    Jeff Houck, PhD, PT, Lacey Seidl, DPT, Austin Montgomery, DPT, ...
    Foot & Ankle Orthopaedics September 18, 2017
     
  15. scotfoot

    scotfoot Active Member

    Interesting results (above ) .
    So , from the abstract , the short foot exercise did not produce significant results in the paper pull test (toe plantar flexor strength) but did increase ankle strength . So the short foot exercise is primarily an ankle exercise ?
     
  16. scotfoot

    scotfoot Active Member

    From post #10 " I would suggest therefore , that the short foot exercise might sacrifice function for posture and cause undesirable plantar pressure changes under the toes (reduced ) and ball of the foot (increased ) during gait . "

    If you look at the pre and post exercise data in Fig 1 of the study " Can Foot Exercises Alter Foot Posture, Strength, and Walking Foot Pressure Patterns in People with Severe Flat Foot? " that is what seems to have happened . Is additional pressure on the ball of the foot under the met heads a good thing ?

     
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