{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,11,19]],"date-time":"2023-11-19T19:53:07Z","timestamp":1700423587460},"reference-count":72,"publisher":"Human Kinetics","issue":"7","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,9,1]]},"abstract":"Context<\/jats:bold>:<\/jats:italic> Hip pain is associated with reduced hip muscle strength, range of movement (ROM), and decreased postural stability. Single-leg squat is a reliable and valid method to measure dynamic balance. Objective<\/jats:bold>:<\/jats:italic> To evaluate the influence of physical characteristics and use of a decline board on squat performance in a hip pain population. Design<\/jats:bold>:<\/jats:italic> Cross-sectional study setting. Clinical Patients<\/jats:bold>:<\/jats:italic> In total, 33 individuals scheduled for arthroscopic hip surgery were matched with 33 healthy controls. Interventions<\/jats:bold>:<\/jats:italic> Hip and ankle ROM, hip strength, and trunk endurance were assessed, along with knee and trunk kinematics during squat on flat and 25\u00b0 decline surfaces. Main Outcome Measures<\/jats:bold>:<\/jats:italic> Between-group and surface differences in alignment, between-group strength and ROM, and associations between alignment and physical characteristics were assessed and determined using mixed model analysis of variance and Pearson R<\/jats:italic>. Results<\/jats:bold>:<\/jats:italic> The hip pain group had significantly less strength and ROM for all directions except abduction strength and ankle dorsiflexion (P<\/jats:italic>\u2009>\u2009.02). No differences existed between the 2 groups for trunk (P<\/jats:italic>\u2009<\u2009.70) or knee displacement (P<\/jats:italic>\u2009<\u2009.46) during squat on either surface. When the 2 groups were combined (n\u2009=\u200966), decline squat significantly reduced knee medial displacement in both limbs by approximately 1 cm (P<\/jats:italic>\u2009<\u2009.01). Decline squat reduced trunk lateral movement on 1 side only (P<\/jats:italic>\u2009=\u2009.03). Reduced knee displacement during decline squat showed fair association with less hip-extension strength (r<\/jats:italic>\u2009=\u2009\u2212.29), hip-flexion strength (r<\/jats:italic>\u2009=\u2009\u2212.25), and less dorsiflexion (r<\/jats:italic>\u2009=\u2009\u2212.24). Strength and range were not associated with trunk displacement. Conclusions<\/jats:bold>:<\/jats:italic> Decline squat reduced medial knee and lateral trunk displacement regardless of hip pain. Reductions may be greater in those with lesser hip muscle strength and dorsiflexion. Use of a decline board during squat for improving knee and trunk alignment should be considered as a goal of exercise intervention.<\/jats:p>","DOI":"10.1123\/jsr.2019-0097","type":"journal-article","created":{"date-parts":[[2019,10,29]],"date-time":"2019-10-29T08:23:55Z","timestamp":1572337435000},"page":"886-896","source":"Crossref","is-referenced-by-count":3,"title":["Changes in Knee and Trunk Alignment in People With Hip Pain and Healthy Controls When Using a Decline Board During Single-Leg Squat"],"prefix":"10.1123","volume":"29","author":[{"given":"Matthew D.","family":"Freke","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kay","family":"Crossley","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Trevor","family":"Russell","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kevin 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