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@PHDTHESIS{Hommen:1012470,
      author       = {Hommen, Jana Maria},
      othercontributors = {Bollheimer, Leo Cornelius and Eschweiler, Jörg},
      title        = {{M}ovement patterns during gait initiation in older adults
                      with various stages of frailty : a biomechanical analysis},
      school       = {Rheinisch-Westfälische Technische Hochschule Aachen},
      type         = {Dissertation},
      address      = {Aachen},
      publisher    = {RWTH Aachen University},
      reportid     = {RWTH-2025-05012},
      pages        = {1 Online-Ressource : Illustrationen},
      year         = {2025},
      note         = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
                      University; Dissertation, Rheinisch-Westfälische Technische
                      Hochschule Aachen, 2025},
      abstract     = {Background: Gait initiation is challenging for older
                      individuals with poor physical function, particularly for
                      those with frailty. Frailty is a geriatric syndrome
                      associated with increased risk of illness, falls, and
                      functional decline. This study examines whether spatial and
                      temporal parameters of gait initiation differ between groups
                      of older adults with different levels of frailty, and
                      whether fear of falling, and balance ability are correlated
                      with the height of lifting the food during gait
                      initiation.Methods: Sixty-one individuals aged > 65 years,
                      classified by Fried frailty phenotype, performed five
                      self-paced gait initiation trials. Data was collected using
                      a three-dimensional passive optical motion capture system,
                      consisting of 10 cameras with the ability to perceive
                      reflective markers, and two force plates. The total duration
                      of gait initiation and the duration of its four sub-phases,
                      the first step length, and the maximum foot clearance during
                      the first step were derived, and compared statistically
                      between groups. Additionally, an association analysis was
                      conducted between foot clearance and fear of falling, and
                      confidence in balance in older individuals.Results: Frail
                      individuals had significantly longer unloading durations,
                      and total durations of gait initiation compared to non-frail
                      older adults. Additionally, they had shorter first step
                      lengths compared to non-frail older adults. Pre-frail older
                      adults also showed shorter steps compared to the non-frail
                      group. However, there were no significant differences
                      between groups for the maximum foot clearance during the
                      first step. Nevertheless, the maximum foot clearance of
                      older individuals correlated significantly with their fear
                      of falling and confidence in balance.Conclusion: Older
                      adults with reduced physical function and signs of frailty
                      mainly display longer duration of gait initiation and
                      decreased first step length compared to non-frail older
                      adults. The release phase is decreased as the double support
                      phase is prolonged in frail patients. This information can
                      guide the development of specialized exercise programs to
                      improve mobility in this challenging motion between static
                      and dynamic balance.},
      cin          = {939410 ; 537200-2},
      ddc          = {610},
      cid          = {$I:(DE-82)939410_20191118$},
      typ          = {PUB:(DE-HGF)11},
      doi          = {10.18154/RWTH-2025-05012},
      url          = {https://publications.rwth-aachen.de/record/1012470},
}