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Full-Text Articles in Medicine and Health Sciences
Modulation Of Soleus H-Reflex During Shortening And Lengthening Muscle Actions In Young And Older Adults, Yung-Sheng Chen, Shi Zhou, Colleen Cartwright
Modulation Of Soleus H-Reflex During Shortening And Lengthening Muscle Actions In Young And Older Adults, Yung-Sheng Chen, Shi Zhou, Colleen Cartwright
Professor Colleen M Cartwright
The Hoffmann reflex (H-reflex) is dependently modulated during isometric and anisometric muscle actions. However, the manner of the H-reflex modulation during dynamic muscle movements in relation to ageing is less stated in the literature. This study was designed to investigate the effects of ageing on soleus (SOL) H-reflex modulation during dynamic muscle actions. Twenty young (24±4 years of age) and 20 older adults (73±5 years of age) voluntarily participated in the study. The SOL H-reflex was measured during passive and active shortening and lengthening muscle actions in a sitting position. The older group showed a lower ratio of the maximal …
Effects Of Ankle Joint Position And Submaximal Muscle Contraction Intensity On Soleus H-Reflex Modulation In Young And Older Adults, Yung-Sheng Chen, Shi Zhou, Colleen Cartwright
Effects Of Ankle Joint Position And Submaximal Muscle Contraction Intensity On Soleus H-Reflex Modulation In Young And Older Adults, Yung-Sheng Chen, Shi Zhou, Colleen Cartwright
Professor Colleen M Cartwright
This study investigated the effects of ankle joint position and submaximal contraction intensity on soleus (SOL) H-reflex modulation. Twenty young (25.1 ± 4.8 years) and 20 older adults (74.2 ± 5.1 years) performed plantar flexions during 10%, 30% and 50% maximal voluntary contractions (MVC) and at ankle positions of neutral (0°), plantar flexion (20°) and dorsiflexion (-20°) in a sitting position. The SOL H-reflex gain in older adults was relatively lower than that in young adults during 10%, 30% and 50% MVC. The SOL H-reflex gain was significantly affected by the intensity of plantar flexion in the respective ankle joint …
Leadership Of Non-Profit Organizations In The Aged Care Sector In Australia, Shankar Sankaran, Colleen Cartwright, Jacqueline Kelly, Kelly Shaw, Jeffrey Soar
Leadership Of Non-Profit Organizations In The Aged Care Sector In Australia, Shankar Sankaran, Colleen Cartwright, Jacqueline Kelly, Kelly Shaw, Jeffrey Soar
Professor Colleen M Cartwright
This paper will describe an organizational change program to be carried out in two not-for-profit organizations in Australia that are providing aged and community care. A pilot project was carried out to secure a research grant from the Australian Federal Government for a three-year research project to strengthen leadership in the not-for-profit aged and community care sector. The paper will summarize the findings from the pilot project, which used systems thinking approaches such as scenario planning. It will also explain an action research approach being proposed to test the leadership framework (developed through the pilot project) in real environments. The …