Articles

Association of epigenetics of the PDK4 gene in skeletal muscle and peripheral blood with exercise therapy following artificial knee arthroplasty

Although exercise is a standard treatment for postoperative osteoarthritis, interindividual differences have been reported. Epigenetic modification (DNA methylation), a factor causing interindividual differenc...

Authors: Tomohiro Kamo, Satoshi Kurose, Hiroshi Ohno, Minoru Murata, Takanori Saito and Yutaka Kimura

Early age at menarche and its associated factors in school girls (age, 10 to 12 years) in Bangladesh: a cross-section survey in Rajshahi District, Bangladesh

Early onset of menarche is one of the most important factors for breast cancer and other associated health hazards. The aim of this study was to investigate the early age at menarche and its associated factors...

Authors: Jannatul Maowa Malitha, Md. Ariful Islam, Saima Islam, Abu Sayed Md. Al Mamun, Suman Chakrabarty and Md. Golam Hossain

Profile of regional fat and fat-free soft tissue accumulation in male athletes

It is unclear whether or not the breakpoint (BP), at which the proportion of each of fat mass (FM) and fat-free soft tissue mass (FFSTM) to body mass (BM) alter, exists in male athletes. We examined the hypoth...

Authors: Yohei Takai, Miyuki Nakatani, Toru Aoki, Daisuke Komori, Kazuyuki Oyamada, Kensuke Murata, Eiji Fujita, Takuya Akamine, Yoshihisa Urita, Masayoshi Yamamoto and Hiroaki Kanehisa

Differences in pulse rate variability with measurement site

Recently, attempts have been made to use the pulse rate variability (PRV) as a surrogate for heart rate variability (HRV). PRV, however, may be caused by the fluctuations of left ventricular pre-ejection perio...

Authors: Emi Yuda, Kento Yamamoto, Yutaka Yoshida and Junichiro Hayano

Effects of aging on foot pedal responses to visual stimuli

Car accidents due to unexpected forward or backward runaway by older drivers are a serious social problem. Although the cause of these accidents is often attributed to stepping on the accelerator instead of th...

Authors: Emi Yuda, Yutaka Yoshida, Norihiro Ueda, Itaru Kaneko, Yutaka Miura and Junichiro Hayano

Body cooling effects of immersion of the forearms in high-concentration artificial carbonic acid water at 25°C

This study examined the effects of immersion in stirred, high-concentration, artificial carbonic acid water on body cooling.

Authors: Yuuki Tanaka, Hisaho Nagano and Akihiro Taimura

Qualitative and quantitative dermatoglyphics of chronic kidney disease of unknown origin (CKDu) in Sri Lanka

Dermatoglyphics has been used widely in fields of medicine as a non-invasive diagnostic tool and an early assessment of risk for certain medical conditions. It reflects disturbances in fetal development during...

Authors: Buddhika Thilanga Bandara Wijerathne, Robert John Meier, Sujatha Senadeera Salgado and Suneth Buddhika Agampodi

On the simple calculation of walking efficiency without kinematic information for its convenient use

Since walking is a daily activity not to require the maximal effort in healthy populations, a very few universal bio-parameters and/or methods have been defined to evaluate individual walking characteristics i...

Authors: Daijiro Abe, Yoshiyuki Fukuoka and Masahiro Horiuchi

Associations between serum levels of insulin-like growth factor-I and bone mineral acquisition in pubertal children: a 3-year follow-up study in Hamamatsu, Japan

Epidemiological data regarding the association between serum levels of IGF-I and bone mineral acquisition during childhood are scarce. Here, we investigated the association between serum levels of IGF-I and bo...

Authors: Katsuyasu Kouda, Masayuki Iki, Kumiko Ohara, Harunobu Nakamura, Yuki Fujita and Toshimasa Nishiyama

Reliability of Physiological Responses Induced by Basic Emotions: A Pilot Study

Although emotion-specific autonomic responses based on the discrete theory of emotion have been widely studied, studies on the reliability of physiological responses to emotional stimuli are limited. In this s...

Authors: Eun-Hye Jang, Sangwon Byun, Mi-Sook Park and Jin-Hun Sohn

Performance of newly developed body mass index cut-off for diagnosing obesity among Ethiopian adults

Obesity is defined as unhealthy excess body fat, which increases the risk of premature mortality from noncommunicable diseases. Early screening and prevention of obesity is critical for averting associated mor...

Authors: Makeda Sinaga, Tilahun Yemane, Elsah Tegene, David Lidstrom and Tefera Belachew

Estimation of stature from finger and phalange lengths in a Korean adolescent

Authors: Ilsun Rhiu and Wonjoon Kim

Longevity-associated mitochondrial DNA 5178 C/A polymorphism modifies effect of aging on renal function in male Japanese health checkup examinees: an exploratory cross-sectional study

Mitochondrial DNA 5178 (Mt5178) C/A polymorphism is reportedly associated with longevity in the Japanese population. The objective of this study was to investigate whether Mt5178 C/A polymorphism influences th...

Authors: Iichiro Ohtsu, Mamoru Ishikawa, Naomi Matsunaga, Kanae Karita, Masao Yoshida, Hirotaka Ochiai, Takako Shirasawa, Takahiko Yoshimoto, Akira Minoura, Shogo Sai and Akatsuki Kokaze

The effects of toe grip training on physical performance and cognitive function of nursing home residents

Toe grip-related training requires individuals to actively exercise muscles that are not frequently used; therefore, it may improve not only toe grip strength but also cognitive function. The purpose of this s...

Authors: Ryota Tsuyuguchi, Satoshi Kurose, Takayuki Seto, Nana Takao, Aya Fujii, Hiromi Tsutsumi, Shingo Otsuki and Yutaka Kimura

Non-visual effects of diurnal exposure to an artificial skylight, including nocturnal melatonin suppression

Recently, more consideration is being given to the beneficial effects of lighting on the maintenance and promotion of the health and well-being of office occupants in built environments. A new lighting technol...

Authors: Akira Yasukouchi, Takafumi Maeda, Kazuyoshi Hara and Hiroyuki Furuune

An overview of hand postures and aging on morphological changes of the median nerve

High-resolution ultrasound is being widely used in carpal tunnel examination to understand morphological and biomechanical characteristics of the median nerve and surrounding anatomy structures.

Authors: Ping Yeap Loh, Wen Liang Yeoh and Satoshi Muraki

Effect of food intake on respiratory chemosensitivity to CO₂ in young adults

Food intake augments CO₂ production; however, minute ventilation is not augmented during exercise after food intake. Respiratory chemoreceptors respond to CO₂ and influence respiration. We examined the effect of ...

Authors: Keiji Hayashi, Misato Suekuni and Koji Sugiyama

Effects of fat distribution on lung function in young adults

To study the associations between fat distribution and lung functions in healthy subjects of young adults and to explore potential gender difference in these correlations.

Authors: Liqian Huang, Ziliang Ye, Jingjing Lu, Cunqing Kong, Qingqing Zhu, Binbin Huang, Zerong Wang, Lin Xu, Qiongying Deng, Jiangu Gong and Peng Liu

Association of taller stature with lower cardiovascular disease mortality in Asian people: a systematic review

Adult height can serve as a disease marker. While taller stature has been reported to be linked to a decreased risk of cardiovascular disease (CVD), an influence of the height on CVD is not fully understood in...

Authors: Hiroyuki Teraura, Tatsuya Suzuki and Kazuhiko Kotani

ERP study on the associations of peripheral oxytocin and prolactin with inhibitory processes involving emotional distraction

Child maltreatment is a major health and social welfare problem, with serious and longstanding consequences. Impulse control ability plays an important role in reducing the risk of child maltreatment. The aim ...

Authors: Sayuri Hayashi, Ayami Tsuru, Fumi Kishida, Yeon-Kyu Kim, Shigekazu Higuchi and Yuki Motomura

NR3C1 gene polymorphisms are associated with high-altitude pulmonary edema in Han Chinese

High-altitude pulmonary edema (HAPE) is a life-threatening form of non-cardiogenic edema which occurs in unacclimatized individuals after rapid ascent to high altitude. NR3C1 gene encodes for glucocorticoid recep...

Authors: Yingzhong Yang, Hui Du, Yuhong Li, Wei Guan, Feng Tang, Qin Ga and Ri-Li Ge

Pitfalls of assessment of autonomic function by heart rate variability

Although analysis of heart rate variability is widely used for the assessment of autonomic function, its fundamental framework linking low-frequency and high-frequency components of heart rate variability with...

Authors: Junichiro Hayano and Emi Yuda

A review of the studies on nonvisual lighting effects in the field of physiological anthropology

Here, we review the history and the trends in the research on the nonvisual effect of light in the field of physiological anthropology. Research on the nonvisual effect of light in the field of physiological a...

Authors: Tetsuo Katsuura and Soomin Lee

Effects of the differences in mental states on the mirror system activities when observing hand actions

It is known that the activities of the mirror system are related to imitation and understanding of the intention of an action. It has been reported that the activity of the mirror system is higher for observat...

Authors: Yuki Ikeda, Yuki Nishimura and Shigekazu Higuchi

Correction to: Eye movements and brain oscillations to symbolic safety signs with different comprehensibility

After the publication of the original article [1] it was highlighted that there was an omission regarding the online resources for the traffic signs in the section of “Experimental stimuli”.

Authors: Yohana Siswandari and Shuping Xiong

Do green-blocking glasses enhance the nonvisual effects of white polychromatic light?

It is well known that light containing the blue component stimulates the intrinsically photosensitive retinal ganglion cells (ipRGCs) and plays a role in melatonin suppression and pupillary constriction. In ou...

Authors: Soomin Lee, Naoshi Kakitsuba and Tetso Katsuura

Stress, migration, and allostatic load: a model based on Mexican migrants in Columbus, Ohio

Immigration is a disruptive event with multiple implications for health. Stressors, including family separation, acculturation, job insecurity, restricted mobility, sojourns, dangerous border crossings, stigma...

Authors: Alexandra C. Tuggle, Jeffrey H. Cohen and Douglas E. Crews

Evaluation of postural stability based on a force plate and inertial sensor during static balance measurements

Previous research on balance mostly focused on the assessment, training, and improvements of balance through interventions. We investigated tools commonly used to study static balance. Differences in postural ...

Authors: Chia-Hsuan Lee and Tien-Lung Sun

Developing an equation for estimating body height from linear body measurements of Ethiopian adults

Measurements of erect height in older people, hospitalized and bedridden patients, and people with skeletal deformity is difficult. As a result, using body mass index for assessing nutritional status is not va...

Authors: Alemayehu Digssie, Alemayehu Argaw and Tefera Belachew

Impact of season on the association between muscle strength/volume and physical activity among community-dwelling elderly people living in snowy-cold regions

Although the benefits of physical activity are well-known, levels of physical inactivity are increasing in many countries. Physical activity, particularly for preventive care of the elderly, must be encouraged...

Authors: Junko Hasegawa, Hideki Suzuki and Taro Yamauchi

The relationship between inhibition of automatic imitation and personal cognitive styles

Previous studies have demonstrated the importance of the inhibition of automatic imitation in social interactions. Additionally, cognitive traits are known to vary among individuals. According to the empathizi...

Authors: Yuki Nishimura, Yuki Ikeda and Shigekazu Higuchi

Suppression of salivary melatonin secretion under 100-Hz flickering and non-flickering blue light

Bright light at night is known to suppress melatonin secretion. Novel photoreceptors named intrinsically photosensitive retinal ganglion cells (ipRGCs) are mainly responsible for projecting dark/bright informa...

Authors: Tomoaki Kozaki, Yuki Hidaka, Jun-ya Takakura and Yosuke Kusano

Characteristics of cardiovascular responses to an orthostatic challenge in trained spinal cord-injured individuals

We investigated cardiovascular responses to an orthostatic challenge in trained spinal cord-injured (SCI) individuals compared to able-bodied (AB) individuals.

Authors: Masahiro Itoh, Masako Yamaoka Endo, Tatsuya Hojo, Miho Yoshimura and Yoshiyuki Fukuoka

Correction to: Effect of simultaneous exposure to extremely short pulses of blue and green light on human pupillary constriction

Following publication of the original article [1], the authors reported that the abstract was missing from this article.

Authors: Soomin Lee, Shougo Ishibashi, Yoshihiro Shimomura and Tetsuo Katsuura

Current health status and its risk factors of the Tsarang villagers living at high altitude in the Mustang district of Nepal

Epidemiology of noncommunicable diseases (NCDs) such as obesity and diabetes mellitus (DM) are influenced by multiple hosts and environmental factors. This study aims to investigate the prevalence of NCDs and ...

Authors: Sweta Koirala, Masayuki Nakano, Hiroaki Arima, Shouhei Takeuchi, Tomo Ichikawa, Takayuki Nishimura, Hiromu Ito, Basu Dev Pandey, Kishor Pandey, Takayuki Wada and Taro Yamamoto

Concordance between appendicular skeletal muscle mass measured with DXA and estimated with mathematical models in middle-aged women

Appendicular skeletal muscle mass (ASMM) is a measure of body muscle content, and it correlates with nutrition and physical status. Estimation of ASMM using anthropometric models is a well-established strategy...

Authors: Nirmala Rathnayake, Gayani Alwis, Janaka Lenora and Sarath Lekamwasam

Energy cost and lower leg muscle activities during erect bipedal locomotion under hyperoxia

Energy cost of transport per unit distance (CoT) against speed shows U-shaped fashion in walking and linear fashion in running, indicating that there exists a specific walking speed minimizing the CoT, being d...

Authors: Daijiro Abe, Yoshiyuki Fukuoka, Takafumi Maeda and Masahiro Horiuchi

Non-cotton swab sample collection may not affect salivary melatonin assay results

Salivary melatonin levels have been analyzed in many research fields, including physiological anthropology. Although various devices have been utilized for saliva collection, cotton swabs are among the most co...

Authors: Tomoaki Kozaki and Yuki Hidaka

Effect of visual orientation on mu suppression in children: a comparative EEG study with adults

The human mirror neuron system exists in adults, and even in children. However, a significant, unanswered question in the literature concerns age differences in the effect of visual orientation of human body m...

Authors: Yuki Nishimura, Yuki Ikeda, Airi Suematsu and Shigekazu Higuchi

The importance of the exposome and allostatic load in the planetary health paradigm

In 1980, Jonas Salk (1914–1995) encouraged professionals in anthropology and related disciplines to consider the interconnections between “planetary health,” sociocultural changes associated with technological...

Authors: Alan C. Logan, Susan L. Prescott, Tari Haahtela and David L. Katz

l-Menthol attenuates the magnitude of cold-induced vasodilation on the extremities of young females

Menthol chemically triggers cold-sensitive receptors in the skin without conductive skin cooling. We investigated the effects of menthol-induced activation of cutaneous cold receptors on the cold-induced vasod...

Authors: Siyeon Kim and Joo-Young Lee

Effects of feet warming using bed socks on sleep quality and thermoregulatory responses in a cool environment

As a way of helping to sleep in winter, methods of warming the feet through footbaths or heating pads before bedtime are tried. In particular, bed socks are popular during winter sleeping in Korea, but scienti...

Authors: Yelin Ko and Joo-Young Lee

Impact of a single, short morning bright light exposure on tryptophan pathways and visuo- and sensorimotor performance: a crossover study

Bright light (BL) has been shown to be effective in enhancing both cognitive and physical performances. Alterations in nighttime melatonin levels have also been observed. However, evaluations of light-induced ...

Authors: Wolfgang Schobersberger, Cornelia Blank, Friedrich Hanser, Andrea Griesmacher, Markus Canazei and Veronika Leichtfried

Ageing vision and falls: a review

Falls are the leading cause of accidental injury and death among older adults. One of three adults over the age of 65 years falls annually. As the size of elderly population increases, falls become a major con...

Authors: Liana Nafisa Saftari and Oh-Sang Kwon

Serotonergic gene polymorphisms (5-HTTLPR, 5HTR1A, 5HTR2A), and population differences in aggression: traditional (Hadza and Datoga) and industrial (Russians) populations compared

Current knowledge on genetic basis of aggressive behavior is still contradictory. This may be due to the fact that the majority of studies targeting associations between candidate genes and aggression are cond...

Authors: Marina L. Butovskaya, Polina R. Butovskaya, Vasiliy A. Vasilyev, Jane M. Sukhodolskaya, Dania I. Fekhredtinova, Dmitri V. Karelin, Julia N. Fedenok, Audax Z. P. Mabulla, Alexey P. Ryskov and Oleg E. Lazebny

Association of EGLN1 genetic polymorphisms with SpO₂ responses to acute hypobaric hypoxia in a Japanese cohort

Recent studies have explored various genetic and physiological factors related to high-altitude adaptation in highlander populations. However, the effects of single nucleotide polymorphisms (SNPs), influencing...

Authors: Yoshiki Yasukochi, Takayuki Nishimura, Midori Motoi and Shigeki Watanuki

Enhanced Nogo-P3 amplitudes of mothers compared with non-mother women during an emotional Go/Nogo task

It is known that emotion regulatory responses of humans are changed by the experiences they have, but in particular, they are changed by becoming a mother. A recent study has found how a woman’s emotion regula...

Authors: Sayuri Hayashi, Hiroko Wada, Sung-Phil Kim, Yuki Motomura, Shigekazu Higuchi and Yeon-Kyu Kim

Sequencing the exons of human glucocorticoid receptor (NR3C1) gene in Han Chinese with high-altitude pulmonary edema

High-altitude pulmonary edema (HAPE) is a serious acute mountain sickness that mainly occurs in non-acclimatized individuals after rapid ascent to high altitude. The precise etiology of HAPE remains unclear. T...

Authors: Hui Du, Jing Zhao, Zhanhai Su, Yongnian Liu and Yingzhong Yang

Seasonal differences in brown adipose tissue density and pulse rate variability in a thermoneutral environment

Brown adipose tissue (BAT) is sympathetically activated and induces thermogenesis during cold exposure, thereby influencing energy expenditure and body fat levels. The very low frequency (VLF) components of pu...

Authors: Shinsuke Nirengi, Naoki Sakane, Shiho Amagasa, Sawako Wakui, Toshiyuki Homma, Yuko Kurosawa and Takafumi Hamaoka

Telomere elongation protects heart and lung tissue cells from fatal damage in rats exposed to severe hypoxia

The effects of acute hypoxia at high altitude on the telomere length of the cells in the heart and lung tissues remain unclear. This study aimed to investigate the change in telomere length of rat heart and lu...

Authors: Yaping Wang, Zhen Zhao, Zhiyong Zhu, Pingying Li, Xiaolin Li, Xiaohong Xue, Jie Duo and Yingcai Ma