The effects of multifocal refractive lenses on occipital extension and forward head posture during a visual task

Article Abstract:

A study is conducted to determine if a change in forward head posture and occipital extension occurred in participants who wore multifocal lenses as opposed to those who dint while performing an 8-min visual reading task on a visual display unit (VDU). A significant difference is identified between groups for changes in degrees of forward head posture while performing the task but no significant difference between groups is found for occipital extension while performing the same task.

United States, Physiological aspects, Comparative analysis, Posture, Reading, Head, Bifocal and multifocal lenses

---

Use of an automatic tracker as a function of its reliability

Article Abstract:

The use and usefulness of an automated tracker as a function of its reliability was investigated. The reliability of the AT varied from completely unreliable to very reliable, and use of the AT and system performance rose as the reliability of the AT rose. Use seemed to be afunction of both AT reliability and the ability of the participants to undertake the task manually.

Usage, Tracking systems, Tracking systems (Navigation)

---

Similar abstracts:

• Abstracts: The impact of misrepresentative data patterns on sales forecasting accuracy. Emerging issues in sales forecasting and decision support systems
• Abstracts: The effects of format on the extraction of information from accounting statements. Methodological weaknesses of Australian small business research
• Abstracts: The effect of pallet distances on torso kinematics and low back disorder risk. The effects of different viewing conditions on performance in simulated minimal access surgery
• Abstracts: Effectiveness of rest pauses and cooling in alleviation of heat stress during simulated fire-fighting activity
• Abstracts: Development of fatigue and discomfort in the upper trapezius muscle during light manual work. Posture, muscle activity and muscle fatigue in prolonged VDT work at different screen height settings

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.