Abstract:
:Total testosterone and dihydrotestosterone in blood serum as well as free testosterone in saliva were determined by radioimmunoassay in 110 healthy young men. The results were compared with the development of terminal hair on the trunk and limbs, with the disposition to balding and with the disposition to acne. No significant correlations were found between terminal hair development and absolute androgen levels; however, some significant values were observed in the case of the metabolic rate of dihydrotestosterone/testosterone and the proportion of free to total testosterone. The disposition to balding also correlates positively with the latter ratio. Yet the absolute serum androgen concentrations in men with a disposition to balding is lower than in men with no reduction of scalp hair. The widespread assumption that androgen levels are in general elevated in bald-trait men must therefore be rejected. In accordance with this finding, men with a disposition to balding are morphologically (with regard to anthropometric measures) no more masculine than those with good scalp hair growth. When body build and age are taken into consideration, the relations between terminal hair and androgen ratio are also problematical. No relationship could be found between acne and androgens.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Knussmann R,Christiansen K,Kannmacher Jdoi
10.1002/ajpa.1330880106subject
Has Abstractpub_date
1992-05-01 00:00:00pages
59-67issue
1eissn
0002-9483issn
1096-8644journal_volume
88pub_type
杂志文章abstract::Cases of pathologically changed bone might constitute a diagnostic pitfall and frequently need histological methods to be etiologically properly evaluated. With micro-computed tomography (microCT), a new epoch of 2D and 3D imaging has been launched. We evaluated the diagnostic investigation of this analytical method v...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20611
更新日期:2007-08-01 00:00:00
abstract::In this review of the evidence for and against taxic diversity within the hominin clade, we begin by looking at the logic and the history of simple "ladder-like" interpretations of the hominin fossil record. We then look at the hominin fossil record in a series of time intervals and use current published evidence abou...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22902
更新日期:2016-01-01 00:00:00
abstract::The Castel di Guido site, with an estimated age of approximately 300,000 years, has yielded abundant animal remains, Acheulian stone and bone bifaces, and small tools. On the surface of the original deposit, turned over by agricultural activities, fragments of human remains were discovered between 1980 and 1986, inclu...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330760205
更新日期:1988-06-01 00:00:00
abstract::In the last 20 years, studies on human identified skeletal collections have revealed a significant relationship between new bone formation on the visceral surface of ribs and pulmonary tuberculosis (TB). To improve methods of differential diagnosis of respiratory diseases in archaeological skeletons, an investigation ...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20309
更新日期:2006-06-01 00:00:00
abstract::Lengths within the cranial base and vault were measured in cephalometric radiographs of 220 boys and 177 girls ranging in age from 0 to 15 years; all these children are participants in The Fels Longitudinal Growth Study. The present study is based on mixed longitudinal data derived from 1640 radiographs for boys and 1...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330580305
更新日期:1982-07-01 00:00:00
abstract:OBJECTIVES:Cuncaicha, a rockshelter site in the southern Peruvian Andes, has yielded archaeological evidence for human occupation at high elevation (4,480 masl) during the Terminal Pleistocene (12,500-11,200 cal BP), Early Holocene (9,500-9,000 cal BP), and later periods. One of the excavated human burials (Feature 15-...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.24160
更新日期:2021-01-01 00:00:00
abstract::A very limiting factor for paleoanthropological studies is the poor state of preservation of the human fossil record, where fragmentation and deformation are considered normal. Although anatomical information can still be gathered from a distorted fossil, such specimens must typically be excluded from advanced morphol...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22376
更新日期:2014-01-01 00:00:00
abstract::It is well established that some observed patterns of force production in the primate masticatory system match those predicted by a simplified lever model. This model is also commonly invoked in adaptive explanations of craniodental diversity. However, systematic studies of the predictive power of this model are missi...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199904)108:4<483::AID-AJPA
更新日期:1999-04-01 00:00:00
abstract:OBJECTIVES:The island cemetery site of Ostorf (Germany) consists of individual human graves containing Funnel Beaker ceramics dating to the Early or Middle Neolithic. However, previous isotope and radiocarbon analysis demonstrated that the Ostorf individuals had a diet rich in freshwater fish. The present study was und...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22788
更新日期:2015-10-01 00:00:00
abstract::Lactation is an energy demanding phase in the reproductive cycle of female mammals. For this reason, several studies have assessed the effects of lactation on female behavior. In this study we examine the influence of lactation on the time-budgets and foraging patterns of female black howlers (Alouatta pigra) in Campe...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.21481
更新日期:2011-05-01 00:00:00
abstract::Studies of skeletal development frequently document populational incidences of bilateral asymmetry. Degenerative morphological skeletal changes, attributed to age related and irregular ossification, may also progress asymmetrically, either as the result of asymmetric biomechanical factors expressed over the lifespan, ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20999
更新日期:2009-06-01 00:00:00
abstract::Variation in long bone cross-sectional geometry can be given a more precise functional interpretation using engineering beam theory. However, difficulties in measurement technique have generally prevented studies of large samples of cross sections in this way. In the present study, an automated system utilizing an ele...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330600308
更新日期:1983-03-01 00:00:00
abstract::As part of the road widening scheme between London and Dover, Oxford Archaeology South uncovered a large boundary ditch of Iron Age origin that contained Iron Age and Roman inhumations, adjacent to which was a small mid-late Roman cemetery, interpreted as a rural cemetery for Romano-British farmers. Grave goods in the...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.21602
更新日期:2011-11-01 00:00:00
abstract:OBJECTIVES:Synthesize information on sleep patterns, sleep site use, and daytime predation at sleep sites in lorisiforms of Asia and Africa (10 genera, 36 species), and infer patterns of evolution of sleep site selection. MATERIALS AND METHODS:We conducted fieldwork in 12 African and six Asian countries, collecting da...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23450
更新日期:2018-07-01 00:00:00
abstract::We have used two modern computerized handheld reflectometers, the Photovolt ColorWalk colorimeter (a tristimulus colorimeter; Photovolt, UMM Electronics, Indianapolis, IN) and the DermaSpectrometer (a specialized narrow-band reflectometer; Cortex Technology, Hadsund, Denmark), to compare two methods for the objective ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(200005)112:1<17::AID-AJPA3
更新日期:2000-05-01 00:00:00
abstract::This article examines the influence of nutritional status on the emergence of deciduous dentition in a cross-sectional sample of 510 rural Rajput children from the Jubbal and Kotkhai Tehsils, Shimla District, Himachal Pradesh, India. The nutritional status of each child was evaluated using Z-scores of height/supine le...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22041
更新日期:2012-05-01 00:00:00
abstract::We evaluate the hardness of foods consumed by sympatric Cercopithecus ascanius (redtail guenons) and Lophocebus albigena (grey-cheeked mangabeys), and consider how selection might operate to influence foraging adaptations. Since L. albigena has among the thickest dental enamel in extant primates and is commonly referr...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10403
更新日期:2004-12-01 00:00:00
abstract::Comparison of hand long-bone lengths and variances in published measurements of North American Caucasoid, Venezuelan, and English individuals, and of their metacarpophalangeal pattern profiles (MPP), revealed systematic differences between samples from infancy through adulthood. The variances of Venezuelan males tend ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330730107
更新日期:1987-05-01 00:00:00
abstract:OBJECTIVES:The present study tests the effectiveness of entheseal robusticity (ER) as a potential predictor of adult age-at-death by applying multiple regression models to a large contemporary identified skeletal sample. MATERIALS AND METHODS:ER was recorded for 23 bilateral postcranial entheses on 481 adult individua...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.24083
更新日期:2020-09-01 00:00:00
abstract::Clinical studies of the relationship between developmental enamel defects and caries susceptibility have often produced conflicting results. This has been due in part to a failure to distinguish between different types of defects. Studies of this association in prehistoric populations have been rare. The complete deci...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330810105
更新日期:1990-01-01 00:00:00
abstract::This study analyzed skeletal health disparities among African American and Euro-American males of low socioeconomic status born between 1825 and 1877. A total of 651 skeletons from the Cobb, Hamann-Todd, and Terry anatomical collections were macroscopically examined for skeletal pathologies related to dietary deficien...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.21434
更新日期:2011-04-01 00:00:00
abstract::One trait that distinguishes the walking gaits of most primates from those of most mammalian nonprimates is the distribution of weight between the forelimbs and hindlimbs. Nonprimate mammals generally experience higher vertical peak substrate reaction forces on the forelimb than on the hindlimb. Primates, in contrast,...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20385
更新日期:2006-08-01 00:00:00
abstract::The production of structured and repetitive sounds by striking objects is a behavior found not only in humans, but also in a variety of animal species, including chimpanzees (Pan troglodytes). In this study we examined individual and social factors that may influence the frequency with which individuals engage in drum...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22634
更新日期:2015-01-01 00:00:00
abstract::Field observations of bipedal posture and locomotion in wild chimpanzees (Pan troglodytes) can serve as key evidence for reconstructing the likely origins of bipedalism in the last prehominid human ancestor. This paper reports on a sample of bipedal bouts, recorded ad libitum, in wild chimpanzees in Bwindi Impenetrabl...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20284
更新日期:2006-02-01 00:00:00
abstract::In addition to being frugivorous, Cebus and Saimiri stand out among the New World primates of similar body size in being heavily dependent on animal matter for protein (faunivory). A detailed description of the morphology and behavior of the two genera is presented with the object of evaluating the interaction and res...
journal_title:American journal of physical anthropology
pub_type: 杂志文章,评审
doi:10.1002/ajpa.1330880405
更新日期:1992-08-01 00:00:00
abstract::A host of ecological, anatomical, and physiological selective pressures are hypothesized to have played a role in the evolution of hominid bipedalism. A referential model, based on the chimpanzee (Pan troglodytes) and bonobo (Pan paniscus), was used to test through experimental manipulation four hypotheses on the evol...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10058
更新日期:2002-06-01 00:00:00
abstract::We investigated the energetic costs of quadrupedal and bipedal walking in two Japanese macaques. The subjects were engaged in traditional bipedal performance for years, and are extremely adept bipeds. The experiment was conducted in an airtight chamber with a gas analyzer. The subjects walked quadrupedally and bipedal...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10352
更新日期:2004-07-01 00:00:00
abstract::The impact that "Romanization" and the development of urban centers had on the health of the Romano-British population is little understood. A re-examination of the skeletal remains of 364 nonadults from the civitas capital at Roman Dorchester (Durnovaria) in Dorset was carried out to measure the health of the childre...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.21239
更新日期:2010-07-01 00:00:00
abstract::During the 1992 and 1993 field seasons, several new specimens of Branisella boliviana, the oldest fossil platyrrhine, were discovered in the late Oligocene deposits at Salla, northwestern Bolivia. The new materials are two maxillary fragments and seven mandibular fragments, including P3 and P2, neither of which have p...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199602)99:2<301::AID-AJPA7
更新日期:1996-02-01 00:00:00
abstract::Archaeological and ethnohistorical documents suggest that the Chachapoya region was inhabited by a number of distinct sociopolitical groups that only united in the face of their common enemy, the Inka. The purpose of this research is to quantify the amount of internal genetic differentiation and levels of extraregiona...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20431
更新日期:2006-11-01 00:00:00