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"Background: Saliva has many properties and the buffering capacity is important for the neutralization of oral fluids. It is unclear whether stressful conditions directly affect salivary buffering capacity, and we investigated the impact of physical stress on salivary buffering capacity.Methods: Twelve participants were subjected to the physical stress of jogging and running. The salivary buffering capacity and flow rate of the participants were measured before and after exposure to stressful conditions. Salivary α-amylase activity was measured as a quantitative index of stress.Results: No change in buffering capacity was detected among each time point during the whole course under physically stressful conditions. Next, we examined the change in buffering capacity after jogging compared to baseline. Six participants showed an increase in buffering capacity (Group A), while the other six participants showed a decrease or no change (Group B) after jogging. Group B showed a decrease in flow rate and increases in α-amylase activity and protein level after jogging, whereas Group A showed no changes in these properties.Conclusions: The results suggest that salivary buffering capacity changes following exposure to physically stressful conditions, and that the changes are dependent on the stress susceptibility of individuals."

"Kesehatan dan keselamatan kerja merupakan masalah utama di bidang manufaktur. Dari tahun 2019 hingga 2021 masih terdapat kasus kecelakaan dimana terjadi peningkatan kejadian kecelakaan kerja dari tahun 2019 hingga saat ini, sehingga perlu dilakukan investigasi faktor-faktor yang mempengaruhi kecelakaan untuk dapat melindungi pekerja. Penelitian ini bertujuan untuk menyelidiki banyaknya stressor yang mempengaruhi dua bentuk stres yang dialami oleh pekerja, stres fisik dan stres psikologis, untuk meningkatkan kinerja mereka dalam hal keselamatan di lingkungan kerja yang berbahaya. Dengan menggunakan model peralatan struktural, penelitian ini mengidentifikasi tuntutan pekerjaan, stres organisasi, stres lingkungan, perilaku keselamatan, stres fisik, stres psikologis, dan hasil keselamatan. Sampel penelitian sebanyak 153 pekerja yang mengisi kuesioner dikembangkan sesuai dengan hubungan stressor. Berdasarkan hasil penelitian, rekomendasi dibuat untuk pekerja tentang cara mengurangi risiko cedera atau kecelakaan.

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ccupational health and safety are a major problem in manufacturing. From 2019 to 2021, there are still accident cases where there is an increase in the incidence of work accidents from 2019 until now, making it necessary to investigate factors that influence accidents to be able to protect workers. This research aims to investigate the many stressors affecting two forms of stress experienced by workers, physical stress and psychological stress, in order to enhance their performance in terms of safety in a hazardous working environment. Using a structural equipment model, this study identified job demand, organizational stress, environmental stress, safety behaviour, physical stress, psychological stress, and safety outcome. The study sample of 153 workers who completed questionnaires was developed according to the stressor relationship. Based on the result, recommendations are made to workers on how to reduce the risk of injury or accident."

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Anak usia remaja sangat rentan mengalami gangguan, diantaranya pola hidup yang tidak teratur, behavior, pertumbuhan fisik dan psikis. Peranan aktifitas fisik atau olahraga menjadi sarana untuk mencegah anak usia remaja dari pengaruh negatif. Akan tetapi aktivitas olahraga ini tidak dilakukan secara teratur dan durasinya sangat singkat baik dilingkungan sekolah maupun dilingkungan sekitarnya. Olahraga disekolah cenderung lebih singkat. Saat ini, banyak anak usia remaja melakukan kegiatan olahraga permainan Futsal. Olahraga futsal bermanfaat untuk meningkatkan kebugaran jasmani, neuroplastisitas. Akan tetapi olahraga futsal juga dapat memengaruhi terhadap stres fisik dan stres oksidatif. Desain pre-post test pada anak usia remaja 13-15 tahun. Subjek penelitian 27 orang (tidak biasa bermain futsal) dibagi secara acak kedalam 3 kelompok perlakuan, frekuensi olahraga (FO) 1x, 3x dan 5x perminggu. Tahap awal penelitian persiapan olahraga futsal dan pengambilan data parameter, tahap perlakuan olahraga futsal selama 8 minggu dan tahap terakhir pengambilan data paramater dilakukan 1 hari setelah perlakuan. Penelitian ini sudah lolos kaji etik dari Komisi Etik FKUI. Kebugaran jasmani ditemukan meningkat secara bermakna pada FO3 dan FO5. Atensi dan memori ditemukan peningkatan pada FO1, FO3 dan FO5. Peningkatan BDNF hanya ditemukan pada kelompok FO3. IGF-1 ditemukan meningkat secara bermakna pada kelompok FO1, FO3 dan FO5. Peningkatan kadar Kortisol dan MDA hanya ditemukan pada kelompok FO5. Hasil penelitian ditemukan olahraga yang optimal dan aman pada anak usia remaja yaitu frekuensi olahraga futsal 3 kali perminggu dibandingkan olahraga futsal 1 kali dan 5 kali terhadap kebugaran jasmani, neuroplastisitas, stres fisik dan stres oksidatif pada anak usia remaja.

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Adolescents are susceptible to disorders, including unconventional lifestyle, behavior, physical and psychological growth. The role of physical activity or sports becomes a means to prevent adolescent children from negative influences. However, this sporting activity is not taken out regularly, and the duration is very short both in the school and the enclosing circumstances. Sports at school tend to be shorter. At present, many teenagers do Futsal sports. Futsal exercise is useful for improving physical fitness, neuroplasticity. However, futsal can also affect physical stress and oxidative stress-pre-post test design in adolescents aged 13-15 years. The research subjects were 27 people (unusual for playing futsal) divided randomly into three treatment groups, exercise frequency (FO) 1x, 3x, and 5x per week. The initial stage of the research is preparation for futsal and parameter data collection, the stage of treatment for futsal for eight weeks, and the last stage of data taking post parameters, one day after treatment. This research has passed the ethical review of the FKUI Ethics Commission. Physical fitness normally found to increase significantly at FO3 and FO5. Attention and memory are found to increase in FO1, FO3, and FO5. Surprisingly, BDNF was only detected in only the FO3 group. IGF-1 was found to increase significantly in the FO1, FO3, and FO5 groups. Increased levels of Cortisol and MDA was simply observed in the FO5 group. The results of the study found optimal and safe exercise in adolescents, namely the frequency of futsal exercise 3 times a week compared to futsal one times and five times for physical fitness, neuroplasticity, physical stress and oxidative stress in adolescents.

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"Saliva has many properties and the buffering capacity is important for the neutralization of oral fluids. It is unclear whether stressful conditions directly affect salivary buffering capacity, and we investigated the impact of physical stress on salivary buffering capacity. Methods: Twelve participants were subjected to the physical stress of jogging and running. The salivary buffering capacity and flow rate of the participants were measured before and after exposure to stressful conditions. Salivary α-amylase activity was measured as a quantitative index of stress.Results: No change in buffering capacity was detected among each time point during the whole course under physically stressful conditions. Next, we examined the change in buffering capacity after jogging compared to baseline. Six participants showed an increase in buffering capacity (Group A), while the other six participants showed a decrease or no change (Group B) after jogging. Group B showed a decrease in flow rate and increases in α-amylase activity and protein level after jogging, whereas Group A showed no changes in these properties. Conclusions: The results suggest that salivary buffering capacity changes following exposure to physically stressful conditions, and that the changes are dependent on the stress susceptibility of individuals."

"This book focuses on the human aspects of wearable technologies and game design, which are often neglected. It shows how user centered practices can optimize wearable experience, thus improving user acceptance, satisfaction and engagement towards novel wearable gadgets. It describes both research and best practices in the applications of human factors and ergonomics to sensors, wearable technologies and game design innovations, as well as results obtained upon integration of the wearability principles identified by various researchers for aesthetics, affordance, comfort, contextual-awareness, customization, ease of use, ergonomy, intuitiveness, obtrusiveness, information overload, privacy, reliability, responsiveness, satisfaction, subtlety, user friendliness and wearability. The book is based on the AHFE 2018 Conference on Human Factors and Wearable Technologies and the AHFE 2018 Conference on Human Factors in Game Design and Virtual Environments , held on July 21–25, 2018 in Orlando, Florida, and addresses professionals, researchers, and students dealing with the human aspects of wearable, smart and/or interactive technologies and game design research."