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Abstract

International Journal of Exercise Science 17(3): 1517-1529, 2024. Morphologic Achilles tendon properties obtained via diagnostic ultrasound imaging are valuable in understanding Achilles tendon health and injury. Currently, limited information exists regarding Achilles tendon morphological properties amongst active aging adults based upon Victorian Institute of Sport Assessment (VISA-A) scores. Achilles tendon morphologic properties defined by VISA-A score groupings allow clinicians and researchers to compare data values amongst current patients. Purpose: Comparison of physically active aging adults Achilles tendon morphological properties with various VISA-A scores or a previous Achilles tendon rupture. A convenience sample of 121 participants (71 females, 50 males) at least moderately active and 50 years old, were recruited. Participants completed a VISA-A survey, and assigned groups by scores (Group 1: 90-100, Group 2: 70-89, Group 3: 45-69, Group 4: Previous Achilles tendon tear). Achilles tendon ultrasound imaging occurred at the malleolar line (The apex of the medial and lateral malleolus). Following imaging Achilles tendon cross-sectional area (CSA), thickness, and elastography were measured and analyzed. Participants with a previous Achilles tendon rupture displayed significantly larger tendon CSA and thickness compared with other groups (p<0.05). Individuals with VISA-A scores from 45-69 displayed significantly larger tendon CSA and thickness than participants with scores greater than 90 (p<0.03). No significant differences were noted for elastography between groups (p>0.05). Achilles tendon morphological differences exist based upon pain level in physically active aging adults. Diagnostic ultrasound may be used during assessment and rehabilitation of injured tendon tissue to inform about current tendon tissue properties.

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