scholarly journals The ageing body: contributing attitudinal factors towards perceptual body size estimates in younger and middle-aged women

2020 ◽  
Author(s):  
Ashleigh M. Bellard ◽  
Piers L. Cornelissen ◽  
Emanuel Mian ◽  
Valentina Cazzato
Keyword(s):  
Body Size ◽  
Middle Aged ◽  
Attitudinal Factors ◽  
Ageing Body ◽  
Size Estimates

First estimates of genome size in ribbon worms (phylum Nemertea) using flow cytometry and Feulgen image analysis densitometry

2014 ◽  
Vol 92 (10) ◽  
pp. 847-851 ◽  
Author(s):  
Kelly L. Mulligan ◽  
Terra C. Hiebert ◽  
Nicholas W. Jeffery ◽  
T. Ryan Gregory
Keyword(s):  
Flow Cytometry ◽  
Image Analysis ◽  
Body Size ◽  
Genome Size ◽  
Positive Relationship ◽  
Nuclear Dna ◽  
Nuclear Dna Content ◽  
Size Estimation ◽  
Size Diversity ◽  
Size Estimates

Ribbon worms (phylum Nemertea) are among several animal groups that have been overlooked in past studies of genome-size diversity. Here, we report genome-size estimates for eight species of nemerteans, including representatives of the major lineages in the phylum. Genome sizes in these species ranged more than fivefold, and there was some indication of a positive relationship with body size. Somatic endopolyploidy also appears to be common in these animals. Importantly, this study demonstrates that both of the most common methods of genome-size estimation (flow cytometry and Feulgen image analysis densitometry) can be used to assess genome size in ribbon worms, thereby facilitating additional efforts to investigate patterns of variability in nuclear DNA content in this phylum.

scholarly journals Influence of Lifestyle Aspects on the Association of Body Size and Shape with All-Cause Mortality in Middle-Aged Men and Women

Obesity Facts ◽  
2010 ◽  
Vol 3 (4) ◽  
pp. 252-260 ◽  
Author(s):  
Janne Bigaard ◽  
Jane Christensen ◽  
Anne Tjønneland ◽  
Birthe Lykke Thomsen ◽  
Kim Overvad ◽  
...  
Keyword(s):  
Body Size ◽  
Middle Aged ◽  
Men And Women ◽  
Size And Shape ◽  
All Cause Mortality

Relationship of catecholamine excretion to body size, obesity, and nutrient intake in middle-aged and elderly men

1992 ◽  
Vol 56 (5) ◽  
pp. 827-834 ◽  
Author(s):  
J B Young ◽  
R J Troisi ◽  
S T Weiss ◽  
D R Parker ◽  
D Sparrow ◽  
...  
Keyword(s):  
Body Size ◽  
Nutrient Intake ◽  
Middle Aged ◽  
Elderly Men ◽  
Catecholamine Excretion ◽  
Relationship Of

scholarly journals Pattern of Adiponectin, Osteocalcin, Irisin, FGF-21, and MCP-1 According to the Body Size Phenotype: Could They Be Markers of Metabolic Health in Mexican-Mestizo Middle-Aged Women?

Metabolites ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 771
Author(s):  
Lourdes Balcázar-Hernandez ◽  
Lourdes Basurto ◽  
Leticia Manuel-Apolinar ◽  
Sara Vega-García ◽  
Norma Basurto-Acevedo ◽  
...  
Keyword(s):  
Body Size ◽  
Cross Sectional Study ◽  
Normal Weight ◽  
The Body ◽  
Metabolic Phenotype ◽  
Obese Women ◽  
Middle Aged ◽  
Cross Sectional ◽  
Metabolically Healthy Obese ◽  
Metabolically Healthy

Variations in levels of some adipokines, myokines, osteokines, hepatokines and inflammatory cytokines contribute to abnormal glucose and lipid metabolism. The aim of this study was to determine the pattern of adiponectin, osteocalcin (OCN), irisin, FGF-21, and MCP-1 according to the body size phenotype of middle-aged women, and their associations with BMI, visceral adipose tissue (VAT), and HOMA-IR. A cross-sectional study in 265 women aged from 40 to 65 years was performed. The biochemical characteristics were evaluated in metabolically healthy normal weight, metabolically unhealthy normal weight, metabolically healthy obese, and metabolically unhealthy obese women. There was an association of OCN with BMI (r = −0.107; p = 0.047); adiponectin with BMI (r = −0.217; p = 0.001), insulin (r = −0.415; p = 0.0001), HOMA-IR (r = −0.429; p = 0.0001), and VAT (r = −0.134; p = 0.025); irisin with BMI (r = 0.604; p = 0.001), insulin (r = 0.446; p = 0.0001), HOMA-IR (r = 0.452; p = 0.0001), and VAT (r = 0.645; p = 0.0001); FGF−21 with insulin (r = −0.337; p= 0.030) and HOMA-IR (r = −0.341; p = 0.03); and MCP-1 with BMI (r = 0.481; p = 0.0001), VAT (r = 0.497; p = 0.001), insulin (r = 0.298; p= 0.001), and HOMA-IR (r = 0.255; p = 0.004). A multivariate analysis showed that an elevation of OCN (OR 1.4 (95%CI 1.06–1.81)) and a reduction of adiponectin (OR 0.9 (0.84–0.96)) were associated factors for a metabolic unhealthy phenotype in normal weight participants. Likewise, higher irisin (OR 1.007 (1.003–1.011)) and MCP-1 (1.044 (1.008–1.083)) were risk factors for a metabolic unhealthy phenotype in woman with obesity. OCN, adiponectin, irisin, FGF-21, and MCP-1 are associated with some metabolic parameters such as BMI, HOMA-IR, and VAT, and could be possible biomarkers of an unhealthy metabolic phenotype in middle-aged women.

scholarly journals Do Different Methods Yield Equivalent Estimations of Brain Size in Birds?

2020 ◽  
Vol 95 (2) ◽  
pp. 113-122
Author(s):  
Diego Ocampo ◽  
César Sánchez ◽  
Gilbert Barrantes
Keyword(s):  
Body Size ◽  
Brain Size ◽  
Brain Mass ◽  
Wide Range ◽  
Evolutionary Studies ◽  
Relative Brain Size ◽  
Using Data ◽  
Endocranial Volume ◽  
The Brain ◽  
Size Estimates

The ratio of brain size to body size (relative brain size) is often used as a measure of relative investment in the brain in ecological and evolutionary studies on a wide range of animal groups. In birds, a variety of methods have been used to measure the brain size part of this ratio, including endocranial volume, fixed brain mass, and fresh brain mass. It is still unclear, however, whether these methods yield the same results. Using data obtained from fresh corpses and from published sources, this study shows that endocranial volume, mass of fixed brain tissue, and fresh mass provide equivalent estimations of brain size for 48 bird families, in 19 orders. We found, however, that the various methods yield significantly different brain size estimates for hummingbirds (Trochilidae). For hummingbirds, fixed brain mass tends to underestimate brain size due to reduced tissue density, whereas endocranial volume overestimates brain size because it includes a larger volume than that occupied by the brain.

Body size estimates: Body image or body attitude measures?

1990 ◽  
Vol 9 (1) ◽  
pp. 57-67 ◽  
Author(s):  
David I. Ben-Tovim ◽  
M. K. Walker ◽  
H. Murray ◽  
G. Chin
Keyword(s):  
Body Image ◽  
Body Size ◽  
Body Attitude ◽  
Attitude Measures ◽  
Size Estimates

scholarly journals Crocodylian Head Width Allometry and Phylogenetic Prediction of Body Size in Extinct Crocodyliforms

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Haley D O’Brien ◽  
Leigha M Lynch ◽  
Kent A Vliet ◽  
John Brueggen ◽  
Gregory M Erickson ◽  
...  
Keyword(s):  
Body Size ◽  
Fossil Record ◽  
Mature Male ◽  
Head Width ◽  
Hard Tissue ◽  
Broad Array ◽  
Phylogenetic Model ◽  
Highly Correlated ◽  
Sexually Mature ◽  
Size Estimates

Synopsis Body size and body-size shifts broadly impact life-history parameters of all animals, which has made accurate body-size estimates for extinct taxa an important component of understanding their paleobiology. Among extinct crocodylians and their precursors (e.g., suchians), several methods have been developed to predict body size from suites of hard-tissue proxies. Nevertheless, many have limited applications due to the disparity of some major suchian groups and biases in the fossil record. Here, we test the utility of head width (HW) as a broadly applicable body-size estimator in living and fossil suchians. We use a dataset of sexually mature male and female individuals (n = 76) from a comprehensive sample of extant suchian species encompassing nearly all known taxa (n = 22) to develop a Bayesian phylogenetic model for predicting three conventional metrics for size: body mass, snout–vent length, and total length. We then use the model to estimate size parameters for a select series of extinct suchians with known phylogenetic affinity (Montsechosuchus, Diplocynodon, and Sarcosuchus). We then compare our results to sizes reported in the literature to exemplify the utility of our approach for a broad array of fossil suchians. Our results show that HW is highly correlated with all other metrics (all R2≥0.85) and is commensurate with femoral dimensions for its reliably as a body-size predictor. We provide the R code in order to enable other researchers to employ the model in their own research.

scholarly journals Rapid action in the Palaeogene, the relationship between phenotypic and taxonomic diversification in Coenozoic mammals

2013 ◽  
Vol 280 (1750) ◽  
pp. 20122244 ◽  
Author(s):  
P. Raia ◽  
F. Carotenuto ◽  
F. Passaro ◽  
P. Piras ◽  
D. Fulgione ◽  
...  
Keyword(s):  
Body Size ◽  
Resource Utilization ◽  
Evolutionary Biology ◽  
Species Level ◽  
Phenotypic Evolution ◽  
Diversification Rates ◽  
Rapid Action ◽  
Hierarchic Level ◽  
The Relationship ◽  
Size Estimates

A classic question in evolutionary biology concerns the tempo and mode of lineage evolution. Considered variously in relation to resource utilization, intrinsic constraints or hierarchic level, the question of how evolutionary change occurs in general has continued to draw the attention of the field for over a century and a half. Here we use the largest species-level phylogeny of Coenozoic fossil mammals (1031 species) ever assembled and their body size estimates, to show that body size and taxonomic diversification rates declined from the origin of placentals towards the present, and very probably correlate to each other. These findings suggest that morphological and taxic diversifications of mammals occurred hierarchically, with major shifts in body size coinciding with the birth of large clades, followed by taxonomic diversification within these newly formed clades. As the clades expanded, rates of taxonomic diversification proceeded independently of phenotypic evolution. Such a dynamic is consistent with the idea, central to the Modern Synthesis, that mammals radiated adaptively, with the filling of adaptive zones following the radiation.

Subjective Equality and Just Noticeable Differences in Body-Size Judgments by Obese Persons

1989 ◽  
Vol 69 (2) ◽  
pp. 595-604 ◽  
Author(s):  
Rick M. Gardner ◽  
James A. Morrell ◽  
Deborah N. Watson ◽  
Susan L. Sandoval
Keyword(s):  
Body Size ◽  
Normal Weight ◽  
Continuous Method ◽  
Difference Threshold ◽  
Subjective Equality ◽  
Second Procedure ◽  
Size Estimates ◽  
Method Of Constant Stimuli

Body-size estimates by obese and normal-weight subjects were compared using two different procedures with a TV-video methodology. In the continuous method subjects adjusted an image larger or smaller until they judged a correct TV-image had been achieved. In the second procedure the method of constant stimuli was used wherein values corresponding to the point of subjective equality ( PSE) and difference threshold ( DL) were determined. No differences between obese and normal-weight subjects were obtained with these procedures. On the continuous task subjects slightly underestimated body size and were more accurate on descending trials where they adjusted the size of the image downwards. With the second procedure, an average PSE of −.62% was obtained, with an average DL = 7.27%. Different PSE values were obtained when subjects were judging whether their image was distorted too wide or too thin. Data from the two procedures are compared and ramifications for the study of body size are discussed.

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