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Your search keyword '"GREYLING, MICHAEL"' showing total 13 results
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13 results on '"GREYLING, MICHAEL"'

5. The role of chair exercises for older adults following hip fracture

Author

Nicholson, Claire M., Czernwicz, Solange, Mandilas, Georgia, Rudolph, Isidore, and Greyling, Michael J.

Abstract

Objectives. To examine the influence of regular participation in chair exercises on postoperative deconditioning in respect of selected physiological, psychological and anthropometric variables.Design. Quasi-experimental, non-randornised control group pre-test/post-test design where test group (N = 20) and control group (N = 10) were not equivalent because random selection and assignment were not possible.Subjects. Patients discharged from an orthopaedic ward 8 - 10 days after hip surgery who were cognitively competent (mean score on Mini-Mental State Examination 26 (SO 3.5)), sedentary (mean score on Habitual Physical Activity Questionnaire for the Elderly 7.4 (SO 3.3)) women aged 70 years and above (mean 80 (SO 6.6) years).Setting. Hip fracture patients admitted to a multidisciplinary geriatric hospital for further medical observation.Measurements. Abstraction of medical records provided information about co-morbidities and questionnaires assessed demographic, affective and cognitive function. Physiological, psychological and anthropometric status was measured pre- and post-intervention.Results. Data revealed high variability, suggesting that the effect of the independent variable was obscured by the heterogeneity of the cohort. Both groups improved similarly in grip strength, and in levels of depression and confidence. Body composition data explained the weight maintenance as a consequence of significant gains in fat-free mass in the experimental group. The significant change in systolic blood pressure and heart rate over the exercise and recovery period suggested that the 6-week period of moderate-intensity exercise was adequate to stimulate cardiovascular adaptations.Conclusions. Whether or not the submaximal chair exercise regimen was of optimal benefit remains unclear. However, the intervention did appear to have contributed to the maintenance of the physical condition of older women temporarily disabled as a result of a fracture and subsequent hip surgery.

Published
2017

11. Validation of the Persian Version of the Problematic Internet Use Questionnaire (PIUQ).

Author

Ranjbar, Hadi, Thatcher, Andrew, Greyling, Michael, Arab, Mansour, and Nasri, Nahid

Subjects
INTERNET addiction, CHI-squared test, STATISTICAL correlation, FACTOR analysis, RESEARCH methodology, QUESTIONNAIRES, RELIABILITY (Personality trait), T-test (Statistics), RESEARCH methodology evaluation, DATA analysis software, STATISTICAL models, DIAGNOSIS
Abstract

Objective: The most commonly used instrument for the research and treatment of excessive internet use is Young's Internet Addiction Test (IAT). While the IAT has been translated to several languages (including Persian) and has demonstrated good psychometric properties across several independent studies, there is still a room for alternative assessment instruments. This study reports a validation of the Persian version of the Problematic Internet Use Questionnaire (PIUQ). Method: A sample (n = 296) from Kerman, Iran was administered the translated Persian version of the PIUQ as well as the Persian version of the University of California, Los Angeles (UCLA) Loneliness scale, Satisfaction With Life scale, and questions related to use of technology and the internet. Results: Analyses using confirmatory and exploratory factor analyses demonstrated that the Persian version of the PIUQ had good internal reliability and concurrent validity (with loneliness and satisfaction with life), but they also had an alternative factor structure that did not support the original factor structure. Conclusion: The Persian version of the PIUQ produced adequate psychometric properties (internal reliability and concurrent validity), but care should be taken in the interpretation of the factor structure. [ABSTRACT FROM AUTHOR]

Published
2014

13. Application of the information, motivation and behavioural skills model for targeting HIV risk behaviour amongst adolescent learners in South Africa.

Author

Ndebele M, Kasese-Hara M, and Greyling M

Subjects
Adolescent, Adolescent Behavior, Female, HIV Infections epidemiology, Health Knowledge, Attitudes, Practice, Humans, Male, Motivation, Peer Group, Program Evaluation, Social Class, South Africa epidemiology, Surveys and Questionnaires, HIV Infections prevention & control, Health Education organization & administration, Risk-Taking, Sexual Behavior statistics & numerical data, Students statistics & numerical data, Teaching methods
Abstract

This paper discusses the application of an information, motivation and behavioural skills (IMB) model in a school-based programme for the reduction of HIV risk behaviour among 259 Grade 11 learners in two high schools in Alexandra township, Johannesburg. School 1 was the Experimental group, while School 2 was the Control group. After a baseline study (Time 1) at both schools, a 3-week intervention programme was conducted at School 1. A post-test (Time 2) was conducted at both schools. The intervention was repeated at School 2, followed by another post-test (Time 3) at both schools. A final test (Time 4) was conducted at both schools. While there were positive changes in the levels of HIV&AIDS IMB in learner participants, these changes may not be entirely attributed to the intervention. If an IMB model-based intervention is to be maximally effective in reducing HIV-risk behaviour among adolescents, it must focus on the behavioural, structural and socio-cultural contexts in which adolescents live.

Published
2012
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