Journal of Physiological Anthropology最新文献

{"title":"Does degree of alteration in effort sense caused by eccentric exercise significantly affect initial exercise hyperpnea in humans?","authors":"Norio Hotta,&nbsp;Kaoru Yamamoto,&nbsp;Hisayoshi Ogata,&nbsp;Patrick Maher,&nbsp;Naoya Okumura,&nbsp;Koji Ishida","doi":"10.1186/s40101-016-0107-5","DOIUrl":"https://doi.org/10.1186/s40101-016-0107-5","url":null,"abstract":"<p><p>Previous research has shown an exaggeration in exercise hyperpnea 2 days after eccentric exercise (ECC). Enhancement in central command has been suggested as one candidate to account for this effect given that ECC-induced neuromuscular dysfunction increases relative exercise intensity, thus resulting in reinforcement of effort sense. The purpose of this study was, therefore, to elucidate whether the degree of alteration in effort sense caused by ECC affects exercise hyperpnea. Ten subjects performed 20-s single-arm extension-flexion exercises with weight strapped to the wrist, and ventilatory response was measured before (Pre) and 2 days after ECC (D2). Relative exercise intensity at Pre was 5 % of maximal voluntary contraction (MVC) of Pre, whereas that at D2 was 9 % MVC of D2 because of decline in muscle strength. Ventilatory responses were significantly exaggerated at D2 with a significant increase in effort sense. Although effort sense was significantly reduced during exercise at D2 when wrist weight was subtracted to match relative exercise intensity at Pre (5 % MVC of D2), ventilatory responses were still significantly higher than those of Pre. After the disappearance of post-ECC muscle damage, subjects performed the same exercise with weight added (9 % MVC of Pre) so that effort was equalized to match that of D2; however, no significant increase in ventilatory response was detected. The fact that the extent of change in effort sense caused by ECC-induced neuromuscular dysfunction did not affect ventilatory response at the onset of exercise after ECC may suggest that the exaggeration of ventilatory response after ECC is caused by mechanisms other than alteration of the central command. </p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0107-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34333718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Measurement of superficial and deep abdominal muscle thickness: an ultrasonography study.","authors":"Nahid Tahan,&nbsp;Khosro Khademi-Kalantari,&nbsp;Mohammad Ali Mohseni-Bandpei,&nbsp;Saeed Mikaili,&nbsp;Alireza Akbarzadeh Baghban,&nbsp;Shapour Jaberzadeh","doi":"10.1186/s40101-016-0106-6","DOIUrl":"https://doi.org/10.1186/s40101-016-0106-6","url":null,"abstract":"<p><strong>Background: </strong>Real-time ultrasound imaging is a valid method in the field of rehabilitation. The ultrasound imaging allows direct visualization for real-time study of the muscles as they contract over the time. Measuring of the size of each abdominal muscle in relation to the others provides useful information about the differences in structure, as well as data on trunk muscle activation patterns. The purpose of this study was to assess the size and symmetry of the abdominal muscles at rest in healthy adults and to provide a reference range of absolute abdominal muscle size in a relatively large population.</p><p><strong>Method: </strong>A total 156 healthy subjects with the age range of 18-44 years were randomly recruited. The thickness of internal oblique, external oblique, transverse abdominis, and rectus abdominis muscles was measured at rest on both right and left sides using ultrasound. Independent t test was used to compare the mean thickness of each abdominal muscle between males and females. Differences on side-to-side thicknesses were assessed using paired t test. The association between abdominal muscle thicknesses with gender and anthropometric variables was examined using the Pearson correlation coefficient.</p><p><strong>Results: </strong>A normal pattern of increasing order of mean abdominal muscle thickness was found in both genders at both right and left sides: transverse abdominis < external oblique < internal oblique < rectus abdominis. There was a significant difference on the size of transverse abdominis, internal oblique, and external oblique muscles between right and left sides in both genders. Males had significantly thicker abdominal muscles than females. Age was significantly correlated with the thickness of internal oblique, external oblique, and rectus abdominis muscles. Body mass index was also positively correlated with muscle thickness of rectus abdominis and external oblique.</p><p><strong>Conclusions: </strong>The results provide a normal reference range for the abdominal muscles in healthy subjects and may be used as an index to find out abnormalities and also to evaluate the effectiveness of different interventions.</p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0106-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34385125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Greater body mass index is related to greater self-identified cold tolerance and greater insensible body mass loss.","authors":"Dahee Jung,&nbsp;Dami Kim,&nbsp;Joonhee Park,&nbsp;Joo Young Lee","doi":"10.1186/s40101-016-0105-7","DOIUrl":"https://doi.org/10.1186/s40101-016-0105-7","url":null,"abstract":"<p><strong>Background: </strong>Insensible body mass loss (IBL) from the human body continuously occurs, which is an important component in body heat exchange. The purpose of this study was to examine the relevance of IBL to anthropometric characteristics and self-identified thermal tolerance.</p><p><strong>Methods: </strong>A total of 289 healthy young Korean males were chosen and sorted into the following three groups: heat tolerable only (HTO, N = 79), cold tolerable only (CTO, N = 104), neither heat nor cold tolerable (NHC, N = 106). They weighed before and after a 30-min rest under lightly clothed condition at an air temperature of 23 ± 1 °C with a relative humidity 55 ± 5 %RH.</p><p><strong>Results: </strong>(1) The IBL of 289 males had a mean of 90 ± 75 g h(-1) (48 ± 40 g h(-1) m(-2)); (2) No significant difference in IBL among the three groups were found; (3) Significant differences in body weight and body mass index (BMI) among three groups were found (P < 0.05), but insignificance was found for height (P = 0.726) or body surface area (P = 0.059); (4) CTO was approximately 4.1 kg heavier in body weight (P < 0.05) and higher in BMI (P < 0.01) than in HTO; (5) Only for the group CTO, IBL (g h(-1)) showed a positive relationship to BMI (P < 0.05, R (2) = 0.056), but there was no relationship between IBL and body surface area.</p><p><strong>Conclusions: </strong>For healthy young males within normal anthropometric ranges in Korea, IBL was positively related to BMI, and individuals with greater BMI showed greater self-identified cold tolerance, but no direct relationship was found between IBL and self-identified cold tolerance. This suggests that body physique (e.g., BMI) could be an explanatory factor between insensible body heat loss and subjective cognition on cold tolerance.</p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0105-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34326997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Postural control and contingent negative variation during transient floor translation while standing with the ankle fixed.","authors":"Vitalii Lytnev,&nbsp;Katsuo Fujiwara,&nbsp;Naoe Kiyota,&nbsp;Mariko Irei,&nbsp;Hiroshi Toyama,&nbsp;Chie Yaguchi","doi":"10.1186/s40101-016-0104-8","DOIUrl":"https://doi.org/10.1186/s40101-016-0104-8","url":null,"abstract":"<p><strong>Background: </strong>Adaptation changes in postural muscle activity and anticipatory attention were investigated with the ankle joint fixed to change postural control strategies during transient floor translation.</p><p><strong>Methods: </strong>For 15 healthy young adults, 40 transient floor translations (S2) in the anterior direction were applied 2 s after an auditory warning signal (S1), under conditions with or without fixation of the ankle. Activity of the frontal postural muscles (tibialis anterior (TA), rectus femoris (RF), rectus abdominis) and contingent negative variation (CNV, brain potential) were analyzed for 20 trials each of the early and latter halves under each fixation condition.</p><p><strong>Results: </strong>With fixation, peak amplitude of muscle activity after S2 was significantly decreased in TA and increased in RF. These muscles showed marked adaptive decreases. The early component of CNV reduced with adaptation, particularly under fixation condition. Only in RF, background activity increased just before S2, with adaptation under fixation. A significant correlation was found between timings of CNV peak and RF activation just before S2 only after adaptation under fixation.</p><p><strong>Conclusion: </strong>These results suggest that the main activation muscle changes from TA to RF with fixation. Under such condition, attention would be focused on the knee with adaptation, and the need for heightening attention in the early stage may have declined. Correspondingly, the timing to heighten stiffness of the RF became later, and attention would have been paid to RF activation just before S2.</p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0104-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34702166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Annual variation in daily light exposure and circadian change of melatonin and cortisol concentrations at a northern latitude with large seasonal differences in photoperiod length.","authors":"Mathias Adamsson,&nbsp;Thorbjörn Laike,&nbsp;Takeshi Morita","doi":"10.1186/s40101-016-0103-9","DOIUrl":"https://doi.org/10.1186/s40101-016-0103-9","url":null,"abstract":"<p><strong>Background: </strong>Seasonal variations in physiology and behavior have frequently been reported. Light is the major zeitgeber for synchronizing internal circadian rhythms with the external solar day. Non-image forming effects of light radiation, for example, phase resetting of the circadian rhythms, melatonin suppression, and acute alerting effects, depend on several characteristics of the light exposure including intensity, timing and duration, spectral composition and previous light exposure, or light history. The aim of the present study was to report on the natural pattern of diurnal and seasonal light exposure and to examine seasonal variations in the circadian change of melatonin and cortisol concentrations for a group of Swedish office workers.</p><p><strong>Methods: </strong>Fifteen subjects participated in a field study that was carried out in the south of Sweden. Ambulatory equipment was used for monthly measurements of the daily exposure to light radiation across the year. The measurements included illuminance and irradiance. The subjects collected saliva samples every 4 h during 1 day of the monthly measuring period.</p><p><strong>Results: </strong>The results showed that there were large seasonal differences in daily amount of light exposure across the year. Seasonal differences were observed during the time periods 04:00-08:00, 08:00-12:00, 12:00-16:00, 16:00-20:00, and 20:00-24:00. Moreover, there were seasonal differences regarding the exposure pattern. The subjects were to a larger extent exposed to light in the afternoon/evening in the summer. During the winter, spring, and autumn, the subjects received much of the daily light exposure in the morning and early afternoon. Regarding melatonin, a seasonal variation was observed with a larger peak level during the winter and higher levels in the morning at 07:00.</p><p><strong>Conclusions: </strong>This study adds to the results from other naturalistic studies by reporting on the diurnal and seasonal light exposure patterns for a group living at a northern latitude of 56° N, with large annual variations in photoperiod length. It seems to be seasonal variation in the lighting conditions, both concerning intensities as well as regarding the pattern of the light exposure to which people living at high latitudes are exposed which may result in seasonal variation in the circadian profile of melatonin.</p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0103-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34573693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neural substrates involved in anger induced by audio-visual film clips among patients with alcohol dependency.","authors":"Mi-Sook Park,&nbsp;Bae Hwan Lee,&nbsp;Jin-Hun Sohn","doi":"10.1186/s40101-016-0102-x","DOIUrl":"https://doi.org/10.1186/s40101-016-0102-x","url":null,"abstract":"<p><strong>Background: </strong>Very little is known about the neural circuitry underlying anger processing among alcoholics. The purpose of this study was to examine the altered brain activity of alcoholic individuals during transient anger emotion.</p><p><strong>Methods: </strong>Using functional magnetic resonance imaging (fMRI), 18 male patients diagnosed with alcohol dependence in an inpatient alcohol treatment facility and 16 social drinkers with similar demographics were scanned during the viewing of anger-provoking film clips.</p><p><strong>Results: </strong>While there was no significant difference in the level of experienced anger between alcohol-dependent patients and non-alcoholic controls, significantly greater activation was observed in the bilateral dorsal anterior cingulate cortex (dACC) and the right precentral gyrus among alcoholic patients compared to the normal controls.</p><p><strong>Conclusions: </strong>In summary, specific brain regions were identified that are associated with anger among patients with alcohol dependency.</p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0102-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34551573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of the kindergarten barefoot policy on preschool children's toes.","authors":"Shigeki Matsuda,&nbsp;Kosho Kasuga,&nbsp;Tadayuki Hanai,&nbsp;Tomohiro Demura,&nbsp;Keisuke Komura","doi":"10.1186/s40101-016-0097-3","DOIUrl":"https://doi.org/10.1186/s40101-016-0097-3","url":null,"abstract":"<p><strong>Background: </strong>This study compared the effects of barefoot policy, a policy instructing preschool children to go without shoes, on untouched-toes, which do not touch the ground while standing normally, of preschool children attending kindergartens that follow this rule, to preschooler in kindergartens where they must wear shoes, i.e., no-barefoot policy.</p><p><strong>Methods: </strong>The study used longitudinal data from measurements taken 2 years apart of the amount of times. The subjects were 59 children (34 boys and 25 girls) who went to a kindergarten that followed barefoot policy and 179 children (103 boys and 76 girls) who went to a kindergarten that did not follow barefoot policy. Images were taken of the contact surface area of the soles of the children's feet by having them stand on the measurement device with their bare feet.</p><p><strong>Results: </strong>The number of untouched-toes in children participating in the study was determined from the pictures. In boys who attended kindergartens following barefoot policy, the ratio of the children without untouched-toes significantly increased for 2 years of childhood (35.3-64.7 %). The number of untouched-toes were significantly fewer in boys from kindergartens following barefoot policy than in boys from kindergartens not following the policy, and the magnitude of the difference grew for the two study years (ES: 0.41-0.63). In girls, there were no significant differences between the two groups in the ratio of girls without untouched-toes and the number of untouched-toes.</p><p><strong>Conclusions: </strong>In conclusion, the ground contact of the toes becomes better for boys in kindergarten with a barefoot policy. The results were inconclusive with regard to girls, and other factors may need to be examined. In the future, it will be necessary to increase the number of the subjects and perform detailed examinations.</p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0097-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34644748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anatomical cross-sectional area of the quadriceps femoris and sit-to-stand test score in middle-aged and elderly population: development of a predictive equation.","authors":"Akira Saito,&nbsp;Ryoichi Ema,&nbsp;Takayuki Inami,&nbsp;Sumiaki Maeo,&nbsp;Shun Otsuka,&nbsp;Mitsuru Higuchi,&nbsp;Shigenobu Shibata,&nbsp;Yasuo Kawakami","doi":"10.1186/s40101-016-0099-1","DOIUrl":"https://doi.org/10.1186/s40101-016-0099-1","url":null,"abstract":"<p><strong>Background: </strong>Although the sit-to-stand (STS) test score has been shown to relate to the strength and size of the quadriceps femoris (QF) for elderly population, it is unknown whether this relationship is influenced by a posture (i.e., the trunk being allowed to stoop or not) during the STS test. The present study investigated the relationship between STS test score and QF anatomical cross-sectional area (ACSA) in the middle-aged and elderly population with regard to the difference in the posture during STS test, and aimed to develop an accurate predicting equation of the QF ACSA from the STS test score.</p><p><strong>Methods: </strong>105 males (40-81 years) and 113 females (41-79 years) participated in the present study, then the subjects were divided at random as validation and cross-validation groups. Mid-thigh QF ACSA was determined by magnetic resonance imaging. Subjects performed a 10-repeated STS as fast as possible in two conditions: (1) with the trunk being allowed to stoop during the sitting phases, and (2) kept upright throughout the test. A power index of the STS test score was calculated based on an equation obtained in a previous study using the time taken for each test condition, the thigh and shank lengths, and body mass. In the validation group (n = 109), a stepwise multiple linear regression analysis was performed to create a predictive model of the ACSA with sex, age, the STS time, and power for both conditions as independent variables. The formulated predictive equation was examined in the cross-validation group (n = 109).</p><p><strong>Results: </strong>In the validation group, a stepwise regression analysis revealed that STS power with upright trunk condition, sex, and age but not with the stooping condition, were selected as variables to predict QF ACSA (R (2) = 0.64, P < 0.001). There was no systematic error for the relationship between predicted and measured values in the cross-validation group.</p><p><strong>Conclusions: </strong>These results indicate that STS test score with upright trunk condition is one of the indices of QF muscle size of the middle-aged and elderly population. The estimated predicting equation should be useful in clinical and practical settings for the health promotion.</p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0099-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34659930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbiome and mental health in the modern environment.","authors":"Emily Deans","doi":"10.1186/s40101-016-0101-y","DOIUrl":"https://doi.org/10.1186/s40101-016-0101-y","url":null,"abstract":"<p><p>A revolution in the understanding of the pathophysiology of mental illness combined with new knowledge about host/microbiome interactions and psychoneuroimmunology has opened an entirely new field of study, the \"psychobiotics\". The modern microbiome is quite changed compared to our ancestral one due to diet, antibiotic exposure, and other environmental factors, and these differences may well impact our brain health. The sheer complexity and scope of how diet, probiotics, prebiotics, and intertwined environmental variables could influence mental health are profound obstacles to an organized and useful study of the microbiome and psychiatric disease. However, the potential for positive anti-inflammatory effects and symptom amelioration with perhaps few side effects makes the goal of clarifying the role of the microbiota in mental health a vital one. </p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0101-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34550036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship between performances of 10-time-repeated sit-to-stand and maximal walking tests in non-disabled older women.","authors":"Naoko Yanagawa,&nbsp;Teruichi Shimomitsu,&nbsp;Masashi Kawanishi,&nbsp;Tetsuo Fukunaga,&nbsp;Hiroaki Kanehisa","doi":"10.1186/s40101-016-0100-z","DOIUrl":"https://doi.org/10.1186/s40101-016-0100-z","url":null,"abstract":"<p><strong>Aim: </strong>Sit-to-stand (STS) test is extensively used to assess the functionality of the lower body in elderly people. This study aimed to examine how the score of STS can be associated with that of maximal walking (MW) tests through a cross-sectional as well as longitudinal analysis for non-disabled older women.</p><p><strong>Method: </strong>Times taken for a 10-time-repeated STS (STS time) and 5-m MW (MW time) were determined before (pre) and after (post) a 3-month body mass-based exercise program in 154 non-disabled women aged 60 to 79 years. In addition to the time scores, STS and MW power indexes (STS-PI and MW-PI, respectively) were calculated using the following equations: STS-PI = (body height - 0.4) × body mass × 10/STS time and MW-PI = body mass × 5/MW time.</p><p><strong>Results: </strong>At pre- and post-intervention, STS-PI was significantly correlated to MW-PI, with higher correlation coefficients (r = 0.545-0.567, P < 0.0001) than those between the two time scores (r = 0.271-0.309, P < 0.001). The intervention significantly improved STS-time (13.6 ± 3.2 s at pre to 9.4 ± 1.8 s at post, P < 0.0001), MW time (2.4 ± 0.3 s to 2.2 ± 0.3 s, P < 0.0001), STS-PI (46.5 ± 12.5 to 65.7 ± 12.7, P < 0.0001), and MW-PI (112.1 ± 20.2 to 124.2 ± 24.4, P < 0.0001). There were significant correlations between the changes of STS and MW times (r = 0.281, P < 0.001) and between those of STS-PI and MW-PI (r = 0.366, P < 0.0001).</p><p><strong>Conclusion: </strong>In elderly women, the performance of sit-to-stand task and its training-induced gain are associated with those of the maximal walking task. In addition, the current results indicated that translation of the performance scores of the sit-to-stand and maximal walking tasks to power indexes may be a useful approach for examining the association between the two tasks.</p>","PeriodicalId":48730,"journal":{"name":"Journal of Physiological Anthropology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2016-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40101-016-0100-z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34723889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}