scholarly journals Identifikácia a komparácia komponentov telesného zloženia vysoko trénovaných judistov

2011 ◽  
Vol 5 (1) ◽  
pp. 33-38
Author(s):  
Lucia Malá ◽  
Tomáš Malý ◽  
František Zahálka ◽  
Miroslav Čada
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Fat Mass ◽  
Weight Reduction ◽  
Sport Performance ◽  
The Body ◽  
Fat Free Mass ◽  
Exact Method ◽  
Judo Athletes ◽  
Total Fat

Authors present a high proportion of fat free mass and a low proportion of fat mass examined by hydrodensitometry in elite judo athletes. Th e diff erence in both indicators of body composition between both examined groups was signifi cant (p<0.05); however, we may see a  better predisposition to sport performance in seniors when compared to juniors. Th e examination of body composition is important in terms of a sport performance predictor, as well as for monitoring changes while weight reduction. Th e form of reduction and individual limits of body weight remain the matter of further research. Th e used method, hydrodensitometry, appears as a very exact method when disturbing factors /participants’ learning phase, expiration, scales oscillation/ are eliminated. Th e measured low proportion of fat mass indicate a discussion about equations for calculation of total fat mass in the body and their modifi cation and assessment of particular parameters/ indicators.

scholarly journals Association between an IGF-I gene polymorphism and body fatness: differences between generations

2006 ◽  
Vol 154 (3) ◽  
pp. 379-388 ◽  
Author(s):  
Paul G Voorhoeve ◽  
Elisabeth F C van Rossum ◽  
Saskia J te Velde ◽  
Jan W Koper ◽  
Han C G Kemper ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Fat Mass ◽  
Body Height ◽  
Promoter Polymorphism ◽  
Repeated Measurements ◽  
Fat Free Mass ◽  
Igf I ◽  
Total Fat ◽  
I Gene

Objective: A polymorphism near the promoter region of the IGF-I gene has been associated with serum IGF-I levels, body height and birth weight. In this study, we investigated whether this polymorphism is associated with body composition in young healthy subjects in two cohorts of different generations. Design: Observational study with repeated measurements. Methods: The study group consisted of two comparable young Dutch cohorts with a generational difference of around 20 years. The older cohort consisted of 359 subjects born between 1961 and 1965. Measurements were performed from 13 until 36 years of age. The younger cohort consisted of 258 subjects born between 1981 and 1989. Measurements were performed from 8 until 14 years of age. Height, body mass index (BMI), fat mass, fat-free mass, waist and hip circumference were compared between wild-type carriers and variant type carriers of the IGF-I polymorphism. Results: In the younger cohort, body weight, BMI, fat mass and waist circumference were significantly higher in female variant carriers of the IGF-I polymorphism. A similar trend was observed in male variant carriers. In contrast, these differences were not observed in the older cohort. Irrespective of genotype, the younger cohort showed a significantly higher total fat mass, body weight and BMI compared with the older cohort. Conclusions: Because the differences between both genotypes were small, it seems likely that the genetic variability due to this IGF-I polymorphism impacts only slightly on body composition. Importantly, our study suggested that associations between this IGF-I promoter polymorphism and body composition possibly reflect a gene–environmental interaction of this polymorphism and that an environment that promotes obesity leads to a slightly more pronounced fat accumulation in variant carriers of this IGF-I polymorphism.

Body Composition Modifications Due to the “Search, Rescue and Survival Training” in Male Military Firefighter Cadets

2021 ◽  
Author(s):  
Thiago Ramos de Barros ◽  
Verônica Pinto Salerno ◽  
Thalita Ponce ◽  
Míriam Raquel Meira Mainenti
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Repeated Measures ◽  
Food Restriction ◽  
Physical Exertion ◽  
High Energy ◽  
The Body ◽  
Fat Free Mass ◽  
Sleep Restriction ◽  
Fat Percentage

ABSTRACT Introduction To train and prepare cadets for a career as firefighters in Rio de Janeiro, the second-year students of the Officers Training Course are submitted to a Search, Rescue, and Survival Training (SRST) course, which is characterized by long periods of high physical exertion and sleep restriction during a 9-day instruction module, and food restriction during a 7-day survival module. The present study investigated changes in the body composition of 39 male cadets submitted to SRST during training and 4 weeks of recovery with no restrictions in food consumption. Materials and Methods Each cadet was evaluated by anthropometric measurements at six time points: pre-SRST; after the first module; after the second module; and after 1, 2, and 4 weeks of recovery. Measurements included body girths and skinfolds, to estimate trunk (chest and waist) and limbs (arm and thigh) dimensions, as well as body composition. Repeated measures ANOVA and Friedman test were applied (depending on each data distribution). Results Statistically significant decreases in body weight (76.2; 69.8-87.2 to 63.9; 58.9-73.5 kg) and fat free mass (FFM, 69.2; 63.7-77.2 to 60.1; 56.2-68.0 kg) were observed following the second module of SRST. Following a single week of recovery, the FFM returned to pre-SRST values. Body weight returned to pre-training levels in 2 weeks. Body fat percentage and mass also significantly decreased during SRST (9.0; 7.7-12.3 to 6.5; 5.1-9.3% and 6.9; 5.6-10.0 to 6.9; 5.6-10.0 kg, respectively), which showed a slower and more gradual recovery that reached pre-SRST values after 4 weeks. The girths of arm, thigh, chest and waist significantly decreased due to SRST. The girths of the limbs (arm and thigh) returned to pre-training values after one month of recovery, while the girths of the trunk (chest and waist) did not return to pre-SRST values during the study period. Conclusions The findings suggest that men who experience periods of high energy demands and sleep restriction followed by a period of food restriction will endure unavoidable physical consequences that can be mostly reversed by a 1-month recovery.

scholarly journals Seasonal and Longitudinal Changes in Body Composition by Sport-Position in NCAA Division I Basketball Athletes

Sports ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 85 ◽  
Author(s):  
Jennifer Fields ◽  
Justin Merrigan ◽  
Jason White ◽  
Margaret Jones
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Body Fat ◽  
Fat Mass ◽  
Ncaa Division I ◽  
The Body ◽  
Fat Free Mass ◽  
Strength And Conditioning ◽  
Air Displacement Plethysmography ◽  
Within Subjects

The purpose of this study was to assess the body composition of male and female basketball athletes (n = 323) across season, year, and sport-position using air displacement plethysmography. An independent sample t-test assessed sport-position differences. An analysis of variance was used to assess within-subjects across season (pre-season, in-season, and off-season), and academic year (freshman, sophomore, and junior). For both men and women basketball (MBB, WBB) athletes, guards had the lowest body fat, fat mass, fat free mass, and body mass. No seasonal differences were observed in MBB, but following in-season play for WBB, a reduction of (p = 0.03) in fat free mass (FFM) was observed. Across years, MBB showed an increase in FFM from freshman to sophomore year, yet remained unchanged through junior year. For WBB across years, no differences occurred for body mass (BM), body fat (BF%), and fat mass (FM), yet FFM increased from sophomore to junior year (p = 0.009). Sport-position differences exist in MBB and WBB: Guards were found to be smaller and leaner than forwards. Due to the importance of body composition (BC) on athletic performance, along with seasonal and longitudinal shifts in BC, strength and conditioning practitioners should periodically assess athletes BC to ensure preservation of FFM. Training and nutrition programming can then be adjusted in response to changes in BC.

scholarly journals Předsoutěžní redukce tělesné hmotnosti a její vliv na tělesné složení

2013 ◽  
Vol 7 (1) ◽  
pp. 121-126
Author(s):  
Klára Coufalová ◽  
Ivana Kinkorová ◽  
Lucia Malá ◽  
Jan Heller
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Weight Reduction ◽  
Negative Impact ◽  
Fat Free Mass ◽  
Extracellular Water ◽  
The Czech Republic ◽  
Body Weight Reduction ◽  
Multifrequency Bioimpedance ◽  
Total Body

The aim of our study was to monitor changes in individual components of body composition due to reduction in body weight in judo. This precontest weight reduction is very common in combat sports and it can have negative impact not only on performance but also on health. Research group consisted of 11 judoists at the age of 17-27 years belonging to the representation of the Czech Republic. The measurement of body composition had two parts; the first was before body weight reduction and the second part at the end of body weight reduction. For the measurement of body composition we used multifrequency bioimpedance analyzer BIA 2000 - M. The results of our study show that rapid intensive weight reduction is reflected in varying degrees in all parameters of body composition. We noticed a reduction of body weight by an average of 4.7% (approximately 3.8 kg), the weight loss ranged from 1.6 kg to 8.1 kg. The greatest changes in the parameters of body composition were detected in the extracellular water (ECW), there was a decrease of this parameter on average by 13.8 %, while total body water (TBW) decreased by 6.0 %. There was also a reduction in the amount of body fat by 13.2 %, the amount of extracellular mass (ECM) decreased by 9.8 %, the ratio of ECM/BCM by 8.9 % and the amount of fat-free mass (FFM) decreased by 4.0 %. Only in intracellular water (ICW), we noticed a slight increase by 1.4 %, which may be due to the redistribution of body fluids. Changes of particular parameters of body composition were statistically and substantively significant.

scholarly journals Body composition and appetite: fat-free mass (but not fat mass or BMI) is positively associated with self-determined meal size and daily energy intake in humans

2011 ◽  
Vol 107 (3) ◽  
pp. 445-449 ◽  
Author(s):  
John E. Blundell ◽  
Phillipa Caudwell ◽  
Catherine Gibbons ◽  
Mark Hopkins ◽  
Erik Näslund ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Food Intake ◽  
Energy Intake ◽  
Fat Mass ◽  
Meal Size ◽  
Fat Free Mass ◽  
Daily Energy Intake ◽  
Molecular Control ◽  
Daily Energy

The idea of body weight regulation implies that a biological mechanism exerts control over energy expenditure and food intake. This is a central tenet of energy homeostasis. However, the source and identity of the controlling mechanism have not been identified, although it is often presumed to be some long-acting signal related to body fat, such as leptin. Using a comprehensive experimental platform, we have investigated the relationship between biological and behavioural variables in two separate studies over a 12-week intervention period in obese adults (totaln92). All variables have been measured objectively and with a similar degree of scientific control and precision, including anthropometric factors, body composition, RMR and accumulative energy consumed at individual meals across the whole day. Results showed that meal size and daily energy intake (EI) were significantly correlated with fat-free mass (FFM,Pvalues < 0·02–0·05) but not with fat mass (FM) or BMI (Pvalues 0·11–0·45) (study 1,n58). In study 2 (n34), FFM (but not FM or BMI) predicted meal size and daily EI under two distinct dietary conditions (high-fat and low-fat). These data appear to indicate that, under these circumstances, some signal associated with lean mass (but not FM) exerts a determining effect over self-selected food consumption. This signal may be postulated to interact with a separate class of signals generated by FM. This finding may have implications for investigations of the molecular control of food intake and body weight and for the management of obesity.

scholarly journals Safety and Feasibility of Fasting-Mimicking Diet and Effects on Nutritional Status and Circulating Metabolic and Inflammatory Factors in Cancer Patients Undergoing Active Treatment

Cancers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 4013
Author(s):  
Francesca Valdemarin ◽  
Irene Caffa ◽  
Angelica Persia ◽  
Anna Laura Cremonini ◽  
Lorenzo Ferrando ◽  
...  
Keyword(s):  
Body Composition ◽  
Growth Factors ◽  
Nutritional Status ◽  
Cancer Patients ◽  
Fat Mass ◽  
Negative Impact ◽  
The Body ◽  
Fat Free Mass ◽  
Nutritional Risk ◽  
Inflammatory Factors

In preclinical studies, fasting was found to potentiate the effects of several anticancer treatments, and early clinical studies indicated that patients may benefit from regimes of modified fasting. However, concerns remain over possible negative impact on the patients’ nutritional status. We assessed the feasibility and safety of a 5-day “Fasting-Mimicking Diet” (FMD) as well as its effects on body composition and circulating growth factors, adipokines and cyto/chemokines in cancer patients. In this single-arm, phase I/II clinical trial, patients with solid or hematologic malignancy, low nutritional risk and undergoing active medical treatment received periodic FMD cycles. The body weight, handgrip strength and body composition were monitored throughout the study. Growth factors, adipokines and cyto/chemokines were assessed by ELISA. Ninety patients were enrolled, and FMD was administered every three weeks/once a month with an average of 6.3 FMD cycles/patient. FMD was largely safe with only mild side effects. The patients’ weight and handgrip remained stable, the phase angle and fat-free mass increased, while the fat mass decreased. FMD reduced the serum c-peptide, IGF1, IGFBP3 and leptin levels, while increasing IGFBP1, and these modifications persisted for weeks beyond the FMD period. Thus, periodic FMD cycles are feasible and can be safely combined with standard antineoplastic treatments in cancer patients at low nutritional risk. The FMD resulted in reduced fat mass, insulin production and circulating IGF1 and leptin. This trial was registered on Clinicaltrials.gov in July 2018 with the identifier NCT03595540.

scholarly journals Changes in Anthropometric Traits and Body Composition Over a Four‐Year Period in Elite Female Judoka Athletes

2019 ◽  
Vol 70 (1) ◽  
pp. 145-155
Author(s):  
Mirosław Smaruj ◽  
Anna Orkwiszewska ◽  
Marek Adam ◽  
Damian Jeżyk ◽  
Maciej Kostrzewa ◽  
...  
Keyword(s):  
Body Composition ◽  
Female Athletes ◽  
The Body ◽  
Fat Free Mass ◽  
Predominant Type ◽  
Body Fat Content ◽  
Judo Athletes ◽  
Average Body Mass ◽  
Similar Body ◽  
Body Circumferences

Abstract The aim of the study was to determine changes in the structure and composition of the body in elite female athletes over a four-year period. The study involved 12 female judo athletes with 34 somatic variables evaluated. Anthropometric evaluation was performed twice, first, when the athletes were members of the national junior team (aged 16.64 ± 1.26 years), and second, after four years, when they were members of the national senior team (aged 20.78 ± 1.27 years). The measurements were taken in accordance with the recommendations of the IBP (International Biological Program) with a set of anthropometric instruments (GPM Swiss) while following the Martin-Saller technique. The average body mass, height, BMI, fat free mass (in kg) and body fat content significantly increased, while the percentage of fat free mass significantly decreased. All of the analyzed body circumferences also increased. Increases were recorded in the width of the upper limbs and they were the width of both hands and both elbows. There was also a statistically significant increase in the value of endomorphic and mesomorphic components, while the ectomorphic component value was similar. Body composition and a substantial number of somatic features of female judokas as seniors were not yet set at the junior stage. The predominant type of the body build was the endo-mesomorphic type and changes that occurred in the sample took place mainly in accordance with this tendency.

scholarly journals Body composition among long distance runners

2020 ◽  
Vol 66 (2) ◽  
pp. 180-186
Author(s):  
Joana Rosado ◽  
João P. Duarte ◽  
Paulo Sousa-e-Silva ◽  
Daniela C. Costa ◽  
Diogo V. Martinho ◽  
...  
Keyword(s):  
Body Composition ◽  
Fat Mass ◽  
Adult Male ◽  
Bioelectrical Impedance ◽  
The Body ◽  
Fat Free Mass ◽  
Body Density ◽  
Distance Runners ◽  
Long Distance ◽  
Air Displacement Plethysmography

SUMMARY OBJECTIVE The current study aimed to examine the body composition of adult male ultra-trail runners (UTR) according to their level of participation (regional UTR-R, vs. national UTR-N). METHODS The sample was composed of 44 adult male UTR (aged 36.5±7.2 years; UTR-R: n=25; UTR-N: n=19). Body composition was assessed by air displacement plethysmography, bioelectrical impedance, and dual-energy X-ray absorptiometry. In addition, the Food Frequency Questionnaire (FFQ) was applied. A comparison between the groups was performed using independent samples t-test. RESULTS Significant differences between groups contrasting in the competitive level were found for chronological age (in years; UTR-R: 38.8±8.2 vs. UTR-N: 33.5±4.1); body density (in L.kg-1; UTR-R: 1.062±0.015 vs. UTR-N: 1.074±0.009); and fat mass (in kg; UTR-R: 12.7±6.8 vs. UTR-N: 7.6±2.7). CONCLUSION UTR-N were younger, presented higher values for body density, and had less fat mass, although no significant differences were found for fat-free mass. The current study evidenced the profile of long-distance runners and the need for weight management programs to regulate body composition.

scholarly journals Bone mineral density and body composition in adolescents with failure to thrive

2010 ◽  
Vol 8 (2) ◽  
pp. 168-174
Author(s):  
Thiago Sacchetto de Andrade ◽  
Luiz Anderson Lopes ◽  
Marcelo de Medeiros Pinheiro ◽  
Vera Lucia Szejnfeld ◽  
José Augusto de Aguiar Carrazedo Taddei
Keyword(s):  
Bone Mineral Density ◽  
Body Composition ◽  
Bone Mass ◽  
Bone Mineral ◽  
Fat Mass ◽  
Failure To Thrive ◽  
Fat Free Mass ◽  
Z Score ◽  
Mineral Density ◽  
Total Fat

ABSTRACT Objective To evaluate bone mineral mass in adolescents with failure to thrive in relation to body composition. Methods A case control study involving 126 adolescents (15 to 19 years), in final puberty maturation being 76 eutrophic and 50 with failure to thrive (genetic or constitutional delay of growth), of matching ages, gender and pubertal maturation. The weight, height and calculated Z score for height/age and body mass index; bone mineral content, bone mineral density and adjusted bone mineral density were established for total body, lower back and femur; total fat-free mass and height-adjusted fat-free mass index, total fat mass and height-adjusted. The statistical analyses were performed using the Student's t-test (weight, height and body composition); Mann-Whitney test (bone mass) and multiple linear regression (bone mass determinants). Results weight, height and height/age Z-score were significantly higher among eutrophic subjects. Both groups did not show statistically significant differences for fat mass, percentage of fat mass, total fat mass height adjusted and fat-free mass index height sadjusted. However, total free fat maass was smaller for the failure to thrive group. Conclusions There was no statistically significant difference for bone mass measurements among adolescents with failure to thrive; however, the factors that determine bone mass formation should be better studied due to the positive correlation with free fat mass detected in these individuals.

scholarly journals Energy intake, physical activity and body weight: a simulation model

1995 ◽  
Vol 73 (3) ◽  
pp. 337-347 ◽  
Author(s):  
Klaas R. Westerterp ◽  
Jeroen H. H. L. M. Donkers ◽  
Elisabeth W. H. M. Fredrix ◽  
Piet oekhoudt
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Body Weight ◽  
Energy Balance ◽  
Energy Expenditure ◽  
Dietary Intake ◽  
Energy Intake ◽  
Relative Size ◽  
The Body ◽  
Fat Free Mass

In adults, body mass (BM) and its components fat-free mass (FFM) and fat mass (FM) are normally regulated at a constant level. Changes in FM and FFM are dependent on energy intake (EI) and energy expenditure (EE). The body defends itself against an imbalance between EI and EE by adjusting, within limits, the one to the other. When, at a given EI or EE, energy balance cannot be reached, FM and FFM will change, eventually resulting in an energy balance at a new value. A model is described which simulates changes in FM and FFM using EI and physical activity (PA) as input variables. EI can be set at a chosen value or calculated from dietary intake with a database on the net energy of foods. PA can be set at a chosen multiple of basal metabolic rate (BMR) or calculated from the activity budget with a database on the energy cost of activities in multiples of BMR. BMR is calculated from FFM and FM and, if necessary, FFM is calculated from BM, height, sex and age, using empirical equations. The model uses existing knowledge on the adaptation of energy expenditure (EE) to an imbalance between EI and EE, and to resulting changes in FM and FFM. Mobilization and storage of energy as FM and FFM are functions of the relative size of the deficit (EI/EE) and of the body composition. The model was validated with three recent studies measuring EE at a fixed EI during an interval with energy restriction, overfeeding and exercise training respectively. Discrepancies between observed and simulated changes in energy stores were within the measurement precision of EI, EE and body composition. Thus the consequences of a change in dietary intake or a change in physical activity on body weight and body composition can be simulated.

Sign in / Sign up

Export Citation Format

Share Document