Biomedical subjects

William C Mann

Publications and source records attributed to William C Mann.

7 recordsLinked to original sources

PubMed2005

Use of personal emergency response systems by older individuals with disabilities.

This article describes how older persons perceive and use personal emergency response systems (PERSs), including issues related to device design, and report reasons for nonuse of PERSs. Data for this study were collected through a semistructured questionnaire that included fixed and open-ended response questions. Six hundred six participants 60 years and older were surveyed. Descriptive statistics were used to report sample characteristics. The most often-stated reason for using a PERS was related to concerns with falling (40% of responses). Asked how a PERS has been helpful, 75.6% of participants expressed an enhanced feeling of security with their PERS. Lack of perceived need (57.0% of responses), cost (37.0%), and lack of knowledge of the device (23.7%) were the most frequently stated reasons for not using a PERS. This study found that, while PERSs provide benefits for many elders, there appear to be many older persons who could benefit who do not have one. Only 16% of participants in this study, all of whom had disabilities, used a PERS.

Aged↗

PubMed2004

Variable-ratio pushrim-activated power-assist wheelchair eases wheeling over a variety of terrains for elders.

OBJECTIVES: To test (1) whether a prototype variable-ratio pushrim-activated power-assist wheelchair would decrease effort and perceived exertion associated with wheeling and (2) whether the prototype would be acceptable to elders. DESIGN: Repeated-measures design. SETTING: Biomechanics laboratory. PARTICIPANTS: Eleven elderly wheelers (mean age +/- standard deviation, 70.7+/-7.8 y). INTERVENTIONS: Wheelers propelled their own wheelchairs and the prototype on a level surface, a carpet, and an incline. MAIN OUTCOME MEASURES: Surface electromyographic activity from upper limb and torso, heart rate, number of pushes, category-ratio scale of perceived exertion, and Consumer Assessment of Power Assist Wheelchairs. RESULTS: Compared with subjects' own manual wheelchairs, the prototype was associated with lower heart rate elevation (P<.0125), lower perceived exertion (P<.0125), and reduced electromyographic activity in 5 of 8 muscles. Of the 11 participants, 10 found the prototype to be "very easy" or "easy" to push on level and inclined surfaces; 9 gave that assessment on carpeted and inclined surfaces. Seven would "definitely" or "probably" trade their manual chairs for the power-assist chair if given the opportunity. Nine thought they would venture to new and different places in a power-assist wheelchair. Time and number of pushes to complete tasks did not differ significantly between chairs. CONCLUSIONS: The prototype reduced the effort associated with wheeling and was an acceptable alternative to manual wheelchairs. Further testing outside the laboratory is warranted.

Aged↗

PubMed2004

The association of home-telehealth use and care coordination with improvement of functional and cognitive functioning in frail elderly men.

This study compared health-related outcomes, during a 1-year period, for two groups of frail elders-one that received care coordination via distance monitoring (home-telehealth) and one that received no intervention. A case-control design was employed. The home telehealth intervention group was made up of 111 male veterans who were enrolled in a Veterans Health Administration project. The control group consisted of 115 men who were referred from either senior service agencies or hospital rehabilitation programs, but did not receive home-telehealth. Subjects in both groups had primary diagnoses of hypertension, diabetes, respiratory disease, or heart disease. The two groups were similar in terms of age, race, marital status, and independence in instrumental activities of daily living (IADL) at baseline. A paired t-test was used to study the before-after (baseline to 12-month follow-up) improvements in the outcome measures within each group. Regression models were used to compare the outcome improvements between the two groups. Over 1 year, the intervention group improved 2.2 points more in IADL, 14.4 points more in FIM motor scores, and 2.7 points more in FIM cognitive scores than the control group (p < 0.0001). This evidence supports the use of a specific home-telehealth strategy for care coordination to improve functional independence in non-institutionalized veterans with chronic disease. A randomized controlled trial should be employed to confirm these findings.

Activities of Daily Living↗

PubMed2004

Grip strength in the frail elderly.

OBJECTIVE: To explore the relationship of impairment types to grip strength in the live-at-home frail elderly. DESIGN: All data in this cross-sectional study were collected in face-to-face interviews in subjects' homes by a nurse or occupational therapist. A total of 832 elders with activity limitations, as determined by the FIM instrument, participated in the study. Subjects were divided into three age groups (60-69, 70-79, and 80+ yrs) and four impairment groups: (1) minimally impaired, (2) visually impaired, (3) motor impaired, and (4) cognitively impaired. The outcome measures included the average (in kilograms) of three grip-strength trials per hand measured with the Jamar dynamometer at the second handle setting. RESULTS: There were significant differences in grip strength scores among all age groups, indicating that grip strength decreased with age. Among impairment groups, the minimally impaired and visually impaired groups had significantly greater grip strength scores than the motor-impaired and the cognitively impaired groups. There were no significant differences between the minimally impaired and visually impaired groups or between the motor-impaired and the cognitively impaired groups. CONCLUSIONS: Age and sex are not the only determining factors of grip strength in the frail elderly. The type of impairment affects grip strength as well. Thus, age-based norms may not be the only basis for interpreting evaluation data and establishing treatment goals with this population.

Activities of Daily Living↗

PubMed2003

Evaluation of pressure and durability of a low-cost wheelchair cushion designed for developing countries.

Pressure sores are a medical problem for wheelchair users worldwide. In developing countries this problem is more critical because of lack of access to specialized technologies and medical assessment. Seat cushions to relieve pressure represent one of best ways to prevent pressure sores for people with spinal cord injury, amputation, cerebral palsy, and other disabilities that require use of wheelchairs for long periods of time. The purpose of this study was to evaluate the performance of a low cost cushion, called the Tuball, designed for low-income communities in developing countries. The Tuball is made from bicycle inner tubes and plastic balls. Its durability and pressure-relieving characteristics were compared with the ROHOTM cushion and the foam cushions now used in Brazil. A sample of 30 participants tested the three cushions: 15 persons with paraplegia and 15 matched able-bodied persons evaluated the capacity of the cushions to distribute pressure. This study also addressed the use of samples of persons without disabilities to test wheelchair cushions.The Tuball cushion provided significantly better pressure distribution than the foam cushion. A t-test was used to compare disabled persons and non-disabled persons as samples in testing cushions. No difference between pressure distribution between non-disabled and disabled participants was found in testing the ROHO cushion or the foam cushion. However, both capacities of pressure distribution and HICPR varied between non-disabled and disabled participants for the Tuball cushion. To determine the useful life of the Tuball cushion, a fatigue test was conducted to simulate sitting and transfer. Both the Tuball and ROHO cushions withstood the equivalent of at least 1 year of use, whereas the foam cushion broke down.

Brazil↗

PubMed2002

Dissatisfaction and nonuse of assistive devices among frail elders.

This article is based on the Rehabilitation Engineering Research Center on Aging Consumer Assessments Study. The sample included 1,056 subjects who reported use or nonuse of assistive devices. Of these subjects, 873 identified reasons for not using or being dissatisfied with certain assistive devices. Study participants owned a mean of 14.2 assistive devices, used 84.8% of the devices they owned, and were satisfied with 84.2% of the devices they owned. Devices were grouped into categories based on the type of impairment they addressed (hearing, vision, cognitive, and musculoskeletal/neuromotor). Study participants owned the largest number of devices in the musculoskeletal/neuromotor category (mean of 10.6 devices). Devices in the hearing impairment category were rated lowest by participants in terms of satisfaction. Almost half of all reasons listed for not using certain assistive devices related to perceived lack of need.

Aged↗

PubMedDate not supplied

Problems with dressing in the frail elderly.

OBJECTIVE: Dressing is an important activity of daily living, yet many older adults have difficulty due to impairments. The purpose of this study was to explore the use of assistive devices for dressing by older persons with impairments, and to look at differences among frail elders with no dressing difficulty, upper-extremity-only dressing difficulty, lower-extremity-only dressing difficulty, and both upper- and lower-extremity dressing difficulty. METHOD: We conducted in-home interviews and functional assessments with 1,101 elderly persons with activities of daily living and/or instrumental activities of daily living limitations in Western New York and Northern Florida. Participants were assigned to one of four groups based on Functional Independence Measure item scores for upper-extremity dressing and lower-extremity dressing. Descriptive statistics were used to report results. RESULTS: Compared to women, there were relatively more men with lower-extremity dressing difficulty than with upper-extremity dressing difficulty. The group with both upper- and lower-extremity dressing difficulty reported the highest level of pain and scored lowest on all measures of functional status and mental status. The most commonly used dressing devices were associated with lower-extremity dressing. CONCLUSION: There are differences in gender, health status, functional status, and mental status among elderly persons grouped by upper- or lower-extremity dressing difficulty. Results suggest that therapists should consider such differences as gender and type of difficulty (upper- or lower-extremity dressing) in both therapeutic approaches and recommendations for assistive devices. Pain is another important consideration, but it can often be reduced during dressing by using assistive devices.

Activities of Daily Living↗