1. Tri-axial loading response to anti-gravity running highlights movement strategy compensations during knee injury rehabilitation of a professional soccer player.
- Author
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Greig, Matt, Mason, Liam, and Mitchell, Andy
- Subjects
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WOUNDS & injuries , *ANTERIOR cruciate ligament injuries , *SOCCER , *ANTERIOR cruciate ligament surgery , *LEG , *RUNNING , *ACCELEROMETERS , *BODY weight , *DESCRIPTIVE statistics , *ACHILLES tendon , *TREADMILLS , *BONE grafting , *STATISTICS , *BODY movement , *EXERCISE tests , *EPIDEMIOLOGY , *CONFIDENCE intervals , *KNEE injuries , *MENISCECTOMY , *ISOKINETIC exercise , *MUSCLE contraction , *SOCCER injuries , *PHYSIOLOGICAL effects of acceleration , *REGRESSION analysis - Abstract
Anti-gravity treadmills have been used in rehabilitation to manipulate exposure to loading and to prescribe return to outside running. Analysis is typically restricted to the vertical plane, but tri-axial accelerometry facilitates multi-planar analysis with relevance to injury mechanism. In this case a professional male soccer player, 4 weeks post-operative surgery to repair a medial meniscectomy, 8 months after Anterior Cruciate Ligament reconstruction to the same knee, completed anti-gravity treadmill running at 70–95% bodyweight (BW) at 5% increments. Tri-axial accelerometers were placed proximal to the Achilles tendon of the injured and healthy leg, and at C7. The planar acceleration at touchdown highlighted an increase at 85% BW, identifying 70% and 85% BW as discrete loading progressions. C7 (3.21 ± 0.68 m·s−2) elicited lower (P < 0.001) vertical acceleration than the lower limb (9.31 ± 1.82 m·s−2), with no difference between limbs suggesting bilateral symmetry. However, in the medio-lateral plane the affected limb (−0.15 ± 1.82 m·s−2) was exposed to lower (P = 0.001) medio-lateral acceleration than the non-affected limb (2.92 ± 1.35 m·s−2) at touchdown, indicative of bilateral asymmetry. PlayerLoad during foot contact was sensitive to accelerometer location, with the affected limb exposed to greater loading in all planes (P ≤ 0.082), exacerbated at 90–95% BW. Tri-axial accelerometry provides a means of assessing multi-planar loading during rehabilitation, enhancing objective progression. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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