• Luke Nelson

๐€๐œ๐ก๐ข๐ฅ๐ฅ๐ž๐ฌ ๐ญ๐ž๐ง๐๐ข๐ง๐จ๐ฉ๐š๐ญ๐ก๐ฒ: ๐š๐ซ๐ž ๐ฒ๐จ๐ฎ ๐œ๐จ๐ฆ๐ฉ๐š๐ซ๐ข๐ง๐  ๐ฐ๐ž๐š๐ค ๐ฏ๐ฌ ๐ฐ๐ž๐š๐ค?

We often compare left versus right when dealing with a one-sided injury, but what if the other side is never strong to begin with? Enter the importance of normative values.โฃโฃ

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๐Ÿค“Seth O'Neill in his 2018 study on the function of those with Achilles tendinopathy concluded:โฃโฃ

โ€œ๐˜ž๐˜ช๐˜ต๐˜ฉ ๐˜ด๐˜บ๐˜ฎ๐˜ฑ๐˜ต๐˜ฐ๐˜ฎ๐˜ข๐˜ต๐˜ช๐˜ค & ๐˜ข๐˜ด๐˜บ๐˜ฎ๐˜ฑ๐˜ต๐˜ฐ๐˜ฎ๐˜ข๐˜ต๐˜ช๐˜ค ๐˜ญ๐˜ช๐˜ฎ๐˜ฃ๐˜ด ๐˜ฃ๐˜ฆ๐˜ช๐˜ฏ๐˜จ ๐˜ธ๐˜ฆ๐˜ข๐˜ฌ๐˜ฆ๐˜ณ ๐˜ช๐˜ฏ ๐˜ต๐˜ฉ๐˜ฐ๐˜ด๐˜ฆ ๐˜ธ๐˜ช๐˜ต๐˜ฉ ๐˜ˆ๐˜›, ๐˜ณ๐˜ฆ๐˜ด๐˜ฆ๐˜ข๐˜ณ๐˜ค๐˜ฉ๐˜ฆ๐˜ณ๐˜ด & ๐˜ค๐˜ญ๐˜ช๐˜ฏ๐˜ช๐˜ค๐˜ช๐˜ข๐˜ฏ๐˜ด ๐˜ค๐˜ข๐˜ฏ๐˜ฏ๐˜ฐ๐˜ต ๐˜ถ๐˜ด๐˜ฆ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฏ๐˜ฐ๐˜ฏ-๐˜ด๐˜บ๐˜ฎ๐˜ฑ๐˜ต๐˜ฐ๐˜ฎ๐˜ข๐˜ต๐˜ช๐˜ค ๐˜ญ๐˜ช๐˜ฎ๐˜ฃ ๐˜ข๐˜ด ๐˜ข ๐˜ค๐˜ฐ๐˜ฎ๐˜ฑ๐˜ข๐˜ณ๐˜ข๐˜ต๐˜ฐ๐˜ณ ๐˜ธ๐˜ฉ๐˜ฆ๐˜ฏ ๐˜ข๐˜ด๐˜ด๐˜ฆ๐˜ด๐˜ด๐˜ช๐˜ฏ๐˜จ ๐˜ด๐˜ต๐˜ณ๐˜ฆ๐˜ฏ๐˜จ๐˜ต๐˜ฉ & ๐˜ฆ๐˜ฏ๐˜ฅ๐˜ถ๐˜ณ๐˜ข๐˜ฏ๐˜ค๐˜ฆ, ๐˜ช๐˜ฏ๐˜ด๐˜ต๐˜ฆ๐˜ข๐˜ฅ ๐˜ฏ๐˜ฐ๐˜ณ๐˜ฎ๐˜ข๐˜ต๐˜ช๐˜ท๐˜ฆ ๐˜ท๐˜ข๐˜ญ๐˜ถ๐˜ฆ๐˜ด ๐˜ฏ๐˜ฆ๐˜ฆ๐˜ฅ ๐˜ต๐˜ฐ ๐˜ฃ๐˜ฆ ๐˜ค๐˜ฐ๐˜ฏ๐˜ด๐˜ช๐˜ฅ๐˜ฆ๐˜ณ๐˜ฆ๐˜ฅ.โ€โฃโฃ

This was reinforced to us recently when we saw a patient present with a 6month history of left-sided Achilles tendinopathy. One may expect the involved side to be weaker, but there is little difference here between the left & right. โฃโฃ

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๐Ÿ”ŽBUT using normative values we know that the ideal strength range for runners on a seated calf isometric is 1.5-2 x bodyweight. At a bodyweight of 96kg, we would expect this individual to be able to produce 144-192kg of peak force, which is well above the 97-93 they are currently able to produce on our state of the art AxIT system.โฃโฃ

๐Ÿ”‘These results seen in this patient are in agreeance with Seth O'Neill's observations: those suffering Achilles' tendinopathy often possess loss of strength & function in BOTH sides!โฃโฃ

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๐Ÿ”‘So the key takeaway here is comparing side to side isn't always reliable, and therein lies the importance of normative values.


๐Ÿ™‹๐Ÿผโ€โ™‚๏ธIf you are suffering from Achille's tendinopathy, don't hesitate to contact us!โฃโฃ

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#achilles #achillestendinopathy #strength #axitallies #healthhighperformance #chiropractic #sportschiropractic #heelpain #running #runninginjuries

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๐Ÿ“šReferenceโฃโฃ

  • O'Neill, S., et al. (2018). "Acute sensory and motor response to 45-s heavy isometric holds for the plantar flexors in patients with Achilles tendinopathy." Knee Surg Sports Traumatol Arthrosc.โฃ

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