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Journal of Physiological Anthropology

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https://www.readbyqxmd.com/read/28645314/neuromuscular-function-during-knee-extension-exercise-after-cold-water-immersion
#1
Hitoshi Wakabayashi, Titis Wijayanto, Yutaka Tochihara
BACKGROUND: Human adaptability to cold environment has been focused on in the physiological anthropology and related research area. Concerning the human acclimatization process in the natural climate, it is necessary to conduct a research assessing comprehensive effect of cold environment and physical activities in cold. This study investigated the effect of cold water immersion on the exercise performance and neuromuscular function during maximal and submaximal isometric knee extension...
June 23, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28637495/diurnal-variation-in-the-core-interthreshold-zone-and-its-relation-to-cutaneous-sensation-threshold-zone
#2
Naoshi Kakitsuba, Igor B Mekjavic
BACKGROUND: The core interthreshold zone (CIZ) is defined as the range between temperatures at the onset of shivering and sweating. Its circadian or diurnal variation has not been extensively studied. The present study examined whether the CIZ is subject to a diurnal rhythm. In addition, according to the previous finding that the CIZ was proportionally correlated with peripheral interthreshold zone (PIZ), it was also examined whether cutaneous sensation threshold zone (CSZ), a determinant of the PIZ, is correlated with the CIZ...
June 21, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28619079/association-between-high-density-lipoprotein-cholesterol-and-hypertension-in-relation-to-circulating-cd34-positive-cell-levels
#3
Yuji Shimizu, Shimpei Sato, Jun Koyamatsu, Hirotomo Yamanashi, Mako Nagayoshi, Koichiro Kadota, Shin-Ya Kawashiri, Takahiro Maeda
BACKGROUND: Although high-density lipoprotein-cholesterol (HDL) level is inversely correlated with cardiovascular events, HDL is also reported to be positively associated with hypertension, which is a known endothelial impairment factor. Since HDL mediates important protective actions on the vascular endothelium by increasing the number of circulating endothelial progenitor cells (CD34-positive cells), the level of circulating CD34-positive cells should influence the association between HDL and hypertension...
June 15, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28615046/the-association-of-insertions-deletions-indels-and-variable-number-tandem-repeats-vntrs-with-obesity-and-its-related-traits-and-complications
#4
REVIEW
Yee-How Say
BACKGROUND: Despite the fact that insertions/deletions (INDELs) are the second most common type of genetic variations and variable number tandem repeats (VNTRs) represent a large portion of the human genome, they have received far less attention than single nucleotide polymorphisms (SNPs) and larger forms of structural variation like copy number variations (CNVs), especially in genome-wide association studies (GWAS) of complex diseases like polygenic obesity. This is exemplified by the vast amount of review papers on the role of SNPs and CNVs in obesity, its related traits (like anthropometric measurements, biochemical variables, and eating behavior), and its related complications (like hypertension, hypertriglyceridemia, hypercholesterolemia, and insulin resistance-collectively known as metabolic syndrome)...
June 14, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28615045/vigorous-physical-activity-predicts-higher-heart-rate-variability-among-younger-adults
#5
Richard May, Victoria McBerty, Adam Zaky, Melino Gianotti
BACKGROUND: Baseline heart rate variability (HRV) is linked to prospective cardiovascular health. We tested intensity and duration of weekly physical activity as predictors of heart rate variability in young adults. Time and frequency domain indices of HRV were calculated based on 5-min resting electrocardiograms collected from 82 undergraduate students. Hours per week of both moderate and vigorous activity were estimated using the International Physical Activity Questionnaire. In regression analyses, hours of vigorous physical activity, but not moderate activity, significantly predicted greater time domain and frequency domain indices of heart rate variability...
June 14, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28583194/differences-in-reported-linguistic-thermal-sensation-between-bangla-and-japanese-speakers
#6
Aklima Khatun, Md Abdul Hasib, Hisaho Nagano, Akihiro Taimura
BACKGROUND: Thermal sensation is a fundamental variable used to determine thermal comfort and is most frequently evaluated through the use of subjective reports in the field of environmental physiology. However, there has been little study of the relationship between the semantics of the words used to describe thermal sensation and the climatic background. The present study investigates the linguistic differences in thermal reports from native speakers of Bangla and Japanese. METHODS: A total of 1141 university students (932 in Bangladesh and 209 in Japan) responded to a questionnaire survey consisting of 20 questions...
June 5, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28446222/effect-of-quantity-and-intensity-of-pulsed-light-on%C3%A2-human-non-visual-physiological-responses
#7
Qianying Dai, Yuria Uchiyama, Soomin Lee, Yoshihiro Shimomura, Tetsuo Katsuura
BACKGROUND: Exposure to pulsed light results in non-visual physiological responses in humans. The present study aims to investigate whether such non-visual effects are influenced to a greater extent by the intensity of lighting or by the power (quantity) of lighting. METHODS: >Twelve healthy young male participants (23 ± 0.3 years, 21-24 age range) were recruited for the present study. Participants were exposed to light of varying levels of intensity and quantity whose frequency was held constant across the conditions, which consisted of exposure to blue (different intensity, constant quantity) and white (constant intensity, different quantity) LEDs...
April 26, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28335804/symbolic-time-series-analysis-of-electroencephalographic-eeg-epileptic-seizure-and-brain-dynamics-with-eye-open-and-eye-closed-subjects-during-resting-states
#8
Lal Hussain, Wajid Aziz, Jalal S Alowibdi, Nazneen Habib, Muhammad Rafique, Sharjil Saeed, Syed Zaki Hassan Kazmi
OBJECTIVE: Epilepsy is a neuronal disorder for which the electrical discharge in the brain is synchronized, abnormal and excessive. To detect the epileptic seizures and to analyse brain activities during different mental states, various methods in non-linear dynamics have been proposed. This study is an attempt to quantify the complexity of control and epileptic subject with and without seizure as well as to distinguish eye-open (EO) and eye-closed (EC) conditions using threshold-based symbolic entropy...
March 23, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28245865/can-tryptophan-supplement-intake-at-breakfast-enhance-melatonin-secretion-at-night
#9
Shunsuke Nagashima, Makoto Yamashita, Chiaki Tojo, Masayuki Kondo, Takeshi Morita, Tomoko Wakamura
BACKGROUND: Tryptophan (TRP) is an essential amino acid, and it has been suggested that TRP intake at breakfast combined with daytime bright light exposure can increase nocturnal melatonin secretion. However, the mechanisms involved are not yet clear. The aim of this study was to examine the effect of TRP supplement intake at breakfast on nocturnal melatonin secretion under different daytime light intensities in humans. METHOD: Twelve subjects (aged 21.3 ± 3...
February 28, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28241855/anthropometric-and-metabolic-indices-in-assessment-of-type-and-severity-of-dyslipidemia
#10
Muhammad Zaid, Fatima Ameer, Rimsha Munir, Rida Rashid, Nimrah Farooq, Shahida Hasnain, Nousheen Zaidi
BACKGROUND: It has been shown that obesity is associated with increased rates of dyslipidemia. The present work revisits the association between plasma lipid levels and classical indicators of obesity including body mass index (BMI). The significance of various anthropometric/metabolic variables in clinical assessment of type and severity of dyslipidemia was also determined. Recently described body indices, a body shape index (ABSI) and body roundness index (BRI), were also assessed in this context...
February 28, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28228153/assessment-of-axillary-temperature-for-the-evaluation-of-normal-body-temperature-of-healthy-young-adults-at-rest-in-a-thermoneutral-environment
#11
Shuri Marui, Ayaka Misawa, Yuki Tanaka, Kei Nagashima
BACKGROUND: The aims of this study were to (1) evaluate whether recently introduced methods of measuring axillary temperature are reliable, (2) examine if individuals know their baseline body temperature based on an actual measurement, and (3) assess the factors affecting axillary temperature and reevaluate the meaning of the axillary temperature. METHODS: Subjects were healthy young men and women (n = 76 and n = 65, respectively). Three measurements were obtained: (1) axillary temperature using a digital thermometer in a predictive mode requiring 10 s (T ax-10 s), (2) axillary temperature using a digital thermometer in a standard mode requiring 10 min (T ax-10 min), and (3) tympanic membrane temperature continuously measured by infrared thermometry (T ty)...
February 22, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28219413/effect-of-waxy-barley-kirarimochi-consumption-on-bowel-movements-of-late-stage-elderly-residents-at-roken-nursing-home
#12
Keiko Taniguchi, Kozo Komae, Asuka Takahashi, Toji Yoshioka, Yoshiaki Sone
BACKGROUND: It is very important for the late-stage elderly to have the least stressful bowel movements for maintaining a good quality of life. It is generally accepted that consuming adequate dietary fiber is a promising method for the prevention and management of stressful bowel movements such as those during constipation. Therefore, we examined the effect of long-term consumption of waxy barley, which is high in dietary fiber, on the bowel movements of the late-stage elderly living at Roken nursing home (a geriatric health services facility), Japan...
February 20, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28212671/an-adaptive-variant-of-trib2-rs1057001-is-associated-with-higher-expression-levels-of-thermogenic-genes-in-human-subcutaneous-and-visceral-adipose-tissues
#13
Kazuhiro Nakayama, Sadahiko Iwamoto
BACKGROUND: An obesity-related single-nucleotide polymorphism (SNP) of the Tribbles pseudokinase 2 gene (TRIB2) was shown to have underwent adaptive evolution in the last glacial period, suggesting a selective advantage of this SNP in human populations in cold environments. In order to verify this hypothesis, the effect of the TRIB2 SNP on the expression of genes involved in adaptive thermogenesis was tested using messenger RNAs prepared from adipose tissues of Japanese adults. METHODS: Complementary DNA was prepared from subcutaneous adipose tissues (SAT) and visceral adipose tissues (VAT) obtained from 48 Japanese adults...
February 17, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28193296/comparison-between-clinical-significance-of-height-adjusted-and-weight-adjusted-appendicular-skeletal-muscle-mass
#14
Taishi Furushima, Motohiko Miyachi, Motoyuki Iemitsu, Haruka Murakami, Hiroshi Kawano, Yuko Gando, Ryoko Kawakami, Kiyoshi Sanada
BACKGROUND: This study aimed to compare relationships between height- or weight-adjusted appendicular skeletal muscle mass (ASM/Ht(2) or ASM/Wt) and risk factors for cardiometabolic diseases or osteoporosis in Japanese men and women. METHODS: Subjects were healthy Japanese men (n = 583) and women (n = 1218). The study population included a young group (310 men and 357 women; age, 18-40 years) and a middle-aged and elderly group (273 men and 861 women; age, ≥41 years)...
February 13, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28179011/cardiorespiratory-and-metabolic-responses-to-body-mass-based-squat-exercise-in-young-men
#15
Miki Haramura, Yohei Takai, Takaya Yoshimoto, Masayoshi Yamamoto, Hiroaki Kanehisa
BACKGROUND: The purpose of this study was to quantify cardiorespiratory and metabolic responses to body mass-based squat exercise, with specific emphasis on the relationships with the exercise duration. METHODS: Fifteen healthy young men performed body mass-based squat exercise as well as an incremental loaded bicycle test, which determine maximal oxygen uptake and maximal heart rate, with an interval of 2 days between the tests. During both tasks, oxygen uptake, blood lactate concentration (BLa), and heart rate (HR) were determined...
February 8, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28143576/enhancement-of-autonomic-and-psychomotor-arousal-by-exposures-to-blue-wavelength-light-importance-of-both-absolute-and-relative-contents-of-melanopic-component
#16
Emi Yuda, Hiroki Ogasawara, Yutaka Yoshida, Junichiro Hayano
BACKGROUND: Blue light containing rich melanopsin-stimulating (melanopic) component has been reported to enhance arousal level, but it is unclear whether the determinant of the effects is the absolute or relative content of melanopic component. We compared the autonomic and psychomotor arousal effects of melanopic-enriched blue light of organic light-emitting diode (OLED) with those of OLED lights with lesser absolute amount of melanopic component (green light) and with greater absolute but lesser relative content (white light)...
January 31, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28126038/increase-in-brain-activation-due-to-sub-tasks-during-driving-fmri-study-using-new-mr-compatible-driving-simulator
#17
Mi-Hyun Choi, Hyung-Sik Kim, Hee-Jeong Yoon, Jung-Chul Lee, Ji-Hye Baek, Jin-Seung Choi, Gye-Rae Tack, Byung-Chan Min, Dae-Woon Lim, Soon-Cheol Chung
BACKGROUND: Several studies have used functional magnetic resonance imaging (fMRI) to show that neural activity is associated with driving. fMRI studies have also elucidated the brain responses associated with driving while performing sub-tasks. It is important to note that these studies used computer mouses, trackballs, or joysticks to simulate driving and, thus, were not comparable to real driving situations. In order to overcome these limitations, we used a driving wheel and pedal equipped with an MR-compatible driving simulator (80 km/h)...
January 26, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28126018/associations-between-the-oxytocin-receptor-gene-oxtr-rs53576-polymorphism-and-emotional-processing-of-social-and-nonsocial-cues-an-event-related-potential-erp-study
#18
Damee Choi, Natsumi Minote, Shigeki Watanuki
BACKGROUND: Oxytocin receptor (OXTR) gene polymorphisms are related to individual differences in emotional processing of social cues. However, whether OXTR polymorphisms affect emotional processing of nonsocial cues remains unclear. The present study investigated the relationship between the OXTR rs53576 polymorphism and emotional processing of social cues and nonsocial cues. METHODS: Event-related potentials were recorded from 88 male participants while images of humans and images of objects were presented as social cues and nonsocial cues, respectively...
January 26, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28086991/does-waterfall-aerosol-influence-mucosal-immunity-and-chronic-stress-a-randomized-controlled-clinical-trial
#19
RANDOMIZED CONTROLLED TRIAL
Carina Grafetstätter, Martin Gaisberger, Johanna Prossegger, Markus Ritter, Predrag Kolarž, Christina Pichler, Josef Thalhamer, Arnulf Hartl
BACKGROUND: The specific microclimate of alpine waterfalls with high levels of ionized water aerosols has been suggested to trigger beneficial immunological and psychological effects. In the present three-armed randomized controlled clinical study, we focused on effects on (i) immunological reagibility, on (ii) physiological stress responses, and on (iii) stress-related psychological parameters. METHODS: People with moderate to high stress levels (n = 65) spent an active sojourn with daily hiking tours in the National Park Hohe Tauern (Großkirchheim, Austria)...
January 13, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28057082/cognitive-performance-during-passive-heat-exposure-in-japanese-males-and-tropical-asian-males-from-southeast-asian-living-in-japan
#20
Titis Wijayanto, Sayo Toramoto, Yasuhiko Maeda, Su-Young Son, Sonomi Umezaki, Yutaka Tochihara
BACKGROUND: Heat acclimatization studies have reported that tropical natives have better physiological function to tolerate heat exposure compared to those from temperate natives, in which may result in a better ability to show a better resistance to performance losses during heat stress. In this study, we investigate whether the degree of heat acclimatization affects cognitive abilities during heat exposure by comparing heat acclimatization level of subjects from Southeast Asia and temperate natives from Japan...
January 5, 2017: Journal of Physiological Anthropology
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