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172 results on '"Lin, Ming-I"'

5. Changes in Navigation Controls and Field-of-View Modes Affect Cybersickness Severity and Spatiotemporal Gait Patterns After Exposure to Virtual Environments.

Author

Lin, Ming-I Brandon, Wu, Bonnie, and Cheng, Shun-Wen

Subjects
*SIMULATOR sickness, *VIRTUAL reality, *GAIT in humans, *HEAD-mounted displays, *TREADMILLS, *GAIT disorders, *TASK performance
Abstract

Objective: To examine the effects of navigation controls and field-of-view modes on cybersickness severity and gait dynamics after cessation of exposure to a virtual environment (VE). Background: The applications of virtual reality are increasing in various fields; however, whether changes in interaction techniques and visual contents could mitigate the potential gait disturbance following VE exposure remains unclear. Method: Thirty healthy adults wore a head-mounted display to complete six sessions of 12-min run-and-gun tasks using different navigation controls (gamepad, head, natural) and field-of-view modes (full, restricted). Forward and backward walking tasks were performed before and after VE exposure. The degrees of cybersickness and presence were evaluated using questionnaires, along with the in-session task performance. Spatiotemporal gait measures and their variabilities were calculated for each walking task. Results: The participants experienced less cybersickness with the head and natural controls than with the gamepad. Natural control, based on matching body movements, was associated with the highest degree of presence and best performance. VE navigation using the gamepad showed reduced cadences and increased stride times during postexposure forward-walking tasks. When the VE was presented via the restricted field-of-view mode, increased gait variabilities were observed from backward-walking tasks after VE exposure. Conclusion: Body movement-based navigation controls may alleviate cybersickness. We observed gait adaptation during both ambulation tasks, which was influenced by the navigation control method and field-of-view mode. Application: This study provides the first evidence for gait adaptation during balance-demanding tasks after VE exposure, which is valuable for designing guidelines for virtual reality interactions. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Use of an inflatable mat to reduce body discomfort development when performing computer work at a standing desk.

Author

Lin, Ming-I Brandon, Yen, Yi-Ting, and Chang, Chun Han

Subjects
WORK environment, STANDING position, ERGONOMICS, JOB performance, ELECTROMYOGRAPHY, BIOMECHANICS
Abstract

This study aimed to determine the effects of inflatable mat design on body discomfort, task performance, and musculoskeletal exposures during standing computer work. Twenty-seven healthy adults completed three 2-hour standing trials on different mediums (concrete floor, foam mat, and inflatable mat) on different days in an experimental laboratory. Both mats were associated with reduced discomfort in all lower-body regions and increased typing performance compared to the concrete floor. Perceived discomfort in lower extremities (except thighs) was further alleviated while standing on the inflatable mat than on the foam mat. Use of the inflatable mat led to increased lower-body muscle activity, a flexed lower back, and a wide range of sagittal knee movements. As standing time increased, body discomfort increased, typing accuracy decreased, and there were increased variations in muscle activity and postural movements in the lower body. The inflatable mat shows potential to improve the ergonomic experience during prolonged standing. Practitioner summary: Incorporating standing postures in office-based workplaces can reduce sitting time and may mitigate the health hazards associated with sedentary behaviour. With adequate weight-shifting movements, using an inflatable mat for standing could be an effective way to lessen discomfort and accumulated musculoskeletal strain due to constrained standing, without jeopardising task productivity. Abbreviations: APDF: amplitude probability distribution function. AVR: average rectified value. CI: confidence interval. CMRR: common mode rejection ratio. COP: center of pressure. CV: coefficient of variation. EA: electrical activity. EMG: electromyography. FL: fibularis longus. GM: gluteus medius. LBP: lower back pain. LES: lumbar erector spinae. MVC: maximum voluntary contraction. PD: pain developer. rANOVA: repeated-measures analysis of variance. SOL: soleus. VAS: visual analog scale. WPM: words per minute [ABSTRACT FROM AUTHOR]

Published
2022
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25. Plasma selenium influences arsenic methylation capacity and developmental delays in preschool children in Taiwan

Author

Su, Chien-Tien, primary, Hsieh, Ru-Lan, additional, Chung, Chi-Jung, additional, Huang, Pai-Tsang, additional, Lin, Ying-Chin, additional, Ao, Pui-Lam, additional, Shiue, Horng-Sheng, additional, Chen, Wei-Jen, additional, Huang, Shiau-Rung, additional, Lin, Ming-I., additional, Mu, Shu-Chi, additional, and Hsueh, Yu-Mei, additional

Published
2019
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31. Growth and development of children conceived by in-vitro maturation of human oocytes

Author

Lin Yu-Hung, Lin Ming-I, Sung Tseng-Chen, Mu Shu-Chi, Hwang Jiann-Loung, and Yeh Tsu-Fuh

Subjects
Male, medicine.medical_specialty, Pediatrics, medicine.drug_class, Neurological examination, Fertilization in Vitro, In Vitro Techniques, Biology, Bayley Scales of Infant Development, Follicle-stimulating hormone, Child Development, medicine, Humans, Early childhood, Child, Intelligence Tests, Gynecology, Psychomotor learning, medicine.diagnostic_test, urogenital system, Body Weight, Infant, Obstetrics and Gynecology, Body Height, In vitro maturation, El Niño, embryonic structures, Pediatrics, Perinatology and Child Health, Oocytes, Female, Gonadotropin
Abstract

Aims The objective of this study is to evaluate the physical and mental development of infants born on in-vitro maturation (IVM) programs. Study design We compare 21 IVM children as study group and 21 non-IVM children as control group. We performed a general physical examination for malformations, neurological examination, developmental examination (Bayley Scales) on the IVM group and the non-IVM group. Results We found all the children with normal karyotype and without major malformation in both IVM and non-IVM groups. The mean Mental Development Index scores for IVM subjects and the comparison group were 92.71 ± 10.47 and 97.19 ± 8.88, respectively (p = 0.074). The mean Psychomotor Development Index scores were 96.67 ± 8.91 and 96.19 ± 7.05, respectively (p = 0.817). Conclusions This is the first study designed to evaluate the physical growth and developmental indices of IVM children with combinational priming protocol of FSH and hCG. Our results suggest that IVM children didn’t show developmental delay during infancy and early childhood.

Published
2006

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