Area:
Physiological Psychology, Rehabilitation and Therapy, Gerontology
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High-probability grants
According to our matching algorithm, Ronita L. Cromwell is the likely recipient of the following grants.
| Years |
Recipients |
Code |
Title / Keywords |
Matching
score |
| 1999 |
Cromwell, Ronita L |
R03Activity Code Description:
To provide research support specifically limited in time and amount for studies in categorical program areas. Small grants provide flexibility for initiating studies which are generally for preliminary short-term projects and are non-renewable. |
Dynamic Control of Head Stability in Older Adults
During walking, posture of the trunk and head provide a stable platform for the head and sensory systems. Age related changes in sensory systems can challenge the ability of older adults to maintain head stability particularly during dynamic tasks such as walking. The broad aim of this project is to determine motor control strategies used by older adults to compensate for changes in sensory systems that occur with age. Of specific interest are the upper body movement patterns used to maintain head stability during functional, dynamic activities such as walking and how these strategies are effected by changes in visual conditions. Twenty healthy, older adults and 20 young adults will be screened for current health status. Balance, vision and flexibility testing will be used in addition to self report of medical and fall history. Subjects will perform 3 walking tasks: a) natural walking at the subject's preferred cadence; b) walking with eyes closed to increase reliance on vestibular input; c) walking while fixing gaze on a distant target to enhance head stability. Sagittal plane head and trunk movements will be recorded using a MacReflex camera system. Frequency analyses will determine gain and phase characteristics of head on trunk movement patterns adopted by subjects to maintain head stability in each condition. These analyses should reveal increasing challenges to head stability in older adults for natural walking and eyes closed walking respectively. Fixation of gaze will improve head stability for both young and older adults at low frequencies showing compensatory head on trunk movements. Older adults will also show improved head stability at higher frequencies while fixing their gaze. Information obtained from this study will characterize head stability in healthy older adults and provide insights regarding changes in visual and vestibular contributions to head stability with age. This study will serve as a basis for examining head stability in older adults with a history of falling.
|
0.961 |
| 2002 |
Cromwell, Ronita L |
R15Activity Code Description:
Supports small-scale research projects at educational institutions that provide baccalaureate or advanced degrees for a significant number of the Nation’s research scientists but that have not been major recipients of NIH support. The goals of the program are to (1) support meritorious research, (2) expose students to research, and (3) strengthen the research environment of the institution. Awards provide limited Direct Costs, plus applicable F&A costs, for periods not to exceed 36 months. This activity code uses multi-year funding authority; however, OER approval is NOT needed prior to an IC using this activity code. |
Influence of Vision On Dynamic Balance During Walking @ University of Texas Medical Br Galveston
DESCRIPTION:(provided by applicant) Maintaining balance during dynamic activities such as walking provides a stable platform for functioning of visual and vestibular systems. Successful motor patterns for head and gaze stabilization have been described for laboratory tasks of seated rotations. However, a task like walking poses a different solution to the problems of maintaining head and gaze stabilization. The broad aim of this project is to examine the integration between sensory and motor systems that contributes to dynamic balance during functional activities. Specifically, this study will delineate motor strategies used to maintain dynamic balance and gaze stability during walking in healthy individuals. These data will serve as baseline measures for studying patients with vestibular dysfunction and older adults with a fall history. Twenty healthy young adults will participate in this study. Subjects will perform four walking tasks. In the first task, subjects will walk at their natural pace over a 15 m walkway. In the second task, subjects will walk while orienting their gaze on a distant stationary target. This task should enhance head and gaze stabilization. In a third task, subjects will walk in total darkness to eliminate visual input. The fourth task involves viewing a head mounted target while walking. This task will suppress the vestibulo-occular reflex and provide information regarding the relative role of gaze stabilization to dynamic balance. Head and trunk movements will be measured using angular rate sensors. Eye-in-head movements will be measured using an infrared limbus tracking system. Head-on-trunk with respect to trunk motion, and eye-in head with respect to head motion will be examined across the frequency spectrum of walking for each condition. These data will provide information on the role of vision and gaze stabilization in maintaining dynamic balance while walking. Motor patterns identified in healthy individuals will 1) provide options for successful substitution strategies in treatment of patients with vestibular dysfunction and 2) provide strategies for dynamic balance used in fall prevention programs for older adults.
|
0.984 |