scholarly journals How Informative are the Vertical Buoyancy and the Prone Gliding Tests to Assess Young Swimmers' Hydrostatic and Hydrodynamic Profiles?

2012 ◽  
Vol 32 (1) ◽  
pp. 21-32 ◽  
Author(s):  
Tiago Barbosa ◽  
Mário Costa ◽  
Jorge Morais ◽  
Marc Moreira ◽  
António Silva ◽  
...  
Keyword(s):  
Body Mass ◽  
Fat Mass ◽  
Flow Model ◽  
Flow Analysis ◽  
Young Male ◽  
The Body ◽  
Mean Square ◽  
Analysis Model ◽  
Stroke Length ◽  
Stroke Frequency

How Informative are the Vertical Buoyancy and the Prone Gliding Tests to Assess Young Swimmers' Hydrostatic and Hydrodynamic Profiles? The aim of this research was to develop a path-flow analysis model to highlight the relationships between buoyancy and prone gliding tests and some selected anthropometrical and biomechanical variables. Thirty-eight young male swimmers (12.97 ± 1.05 years old) with several competitive levels were evaluated. It were assessed the body mass, height, fat mass, body surface area, vertical buoyancy, prone gliding after wall push-off, stroke length, stroke frequency and velocity after a maximal 25 [m] swim. The confirmatory model included the body mass, height, fat mass, prone gliding test, stroke length, stroke frequency and velocity. All theoretical paths were verified except for the vertical buoyancy test that did not present any relationship with anthropometrical and biomechanical variables nor with the prone gliding test. The good-of-fit from the confirmatory path-flow model, assessed with the standardized root mean square residuals (SRMR), is considered as being close to the cut-off value, but even so not suitable of the theory (SRMR = 0.11). As a conclusion, vertical buoyancy and prone gliding tests are not the best techniques to assess the swimmer's hydrostatic and hydrodynamic profile, respectively.

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.

Prevalence of obesity using the body mass index and equivalent age- and sex-specific thresholds for percentage body fat mass

2013 ◽  
Vol 7 ◽  
pp. e93
Author(s):  
Julie A. Pasco ◽  
Haslinda Gould ◽  
Kara L. Holloway ◽  
Amelia G. Dobbins ◽  
Mark A. Kotowicz ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Body Fat ◽  
Fat Mass ◽  
The Body ◽  
Body Fat Mass ◽  
Percentage Body Fat ◽  
Equivalent Age ◽  
Prevalence Of Obesity ◽  
Age And Sex

scholarly journals Changes in Body Fat Distribution in Antiretroviral-Naive HIV-Positive Individuals Initiating Current ART Regimens

2018 ◽  
Vol 104 (3) ◽  
pp. 900-905 ◽  
Author(s):  
Juan Tiraboschi ◽  
Antonio Navarro-Alcaraz ◽  
Dolors Giralt ◽  
Carmen Gomez-Vaquero ◽  
Maria Saumoy ◽  
...  
Keyword(s):  
Body Mass ◽  
Body Fat ◽  
Fat Mass ◽  
Fat Distribution ◽  
Body Fat Distribution ◽  
The Body ◽  
Strand Transfer ◽  
Mass Ratio ◽  
Total Fat ◽  
Fat Mass Ratio

Abstract Objectives To describe the changes in body fat distribution (BFD) occurring over 60 months in a group of antiretroviral therapy (ART)-naive individuals starting different antiretroviral regimens. Methods A prospective ongoing fat change assessment including clinical evaluation and dual X-ray absorptiometry scan is being conducted in all consecutive patients initiating ART from January 2008. Arm, leg, trunk, and total fat as well as fat mass ratio were determined. Results A total of 146 patients were included (80% male, 40% MSM). Mean age was 44 years, HIV-1 RNA was 4.98 log10 copies/mL, and CD4 count was 254 cells/μL. The most common initial antiretroviral combination included non-nucleoside reverse transcription inhibitor (NNRTI) drugs followed by protease inhibitor (PI) and integrase strand transfer inhibitor (INSTI)-based regimens. At month 36, an increase was seen in the body mass index (BMI), total fat, trunk fat, and limb fat. The fat mass ratio (FMR) also showed a significant increase in both men and women (P = 0.001). In patients receiving NNRTI- or INSTI-based regimens (but not PIs), there was a marginal but statistically significant increase in the FMR (0.10 and 0.07, respectively; P = 0.01). Sixty-two subjects completed 60 months of follow-up. FMR showed a significant increase even in the PI group at this time point (P < 0.03). Conclusions We observed a significant increase in the fat and lean body mass in all compartments and treatment groups over 36 and 60 months. Clinically irrelevant differences were found in fat distribution regardless of the treatment group and baseline characteristics. The data suggest that current antiretroviral regimens have little impact on BFD during the first years of treatment.

Asociación entre la composición corporal y la condición física en estudiantes de grado sexto, pertenecientes a la institución educativa moderna de Tuluá, Colombia año 2019 (Association between body composition and the physical condition in sixth grade st

Retos ◽  
2020 ◽  
pp. 539-546
Author(s):  
Luis Hebert Palma Pulido ◽  
Carlos Hernán Méndez Díaz ◽  
Alfonso Cespedes Manrrique ◽  
Jorge Andrés Castro Mejía ◽  
Alejandro Viveros Restrepo ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Composition ◽  
Body Mass ◽  
Fat Mass ◽  
Physical Condition ◽  
Pearson Correlation ◽  
Sixth Grade ◽  
The Body ◽  
Fat Percentage ◽  
Cardiovascular Capacity

 El siguiente estudio, tuvo como finalidad, determinar la correlación entre la composición corporal y la condición física en niños de sexto grado de la Institución Educativa de Tuluá, Colombia. El estudio fue no experimental, descriptivo y de alcance correlacional. La valoración de la composición corporal, se realizó mediante el índice de masa corporal y el porcentaje de grasa (fórmula de Slaughter y Lohmann). La condición física, se determinó por medio de la batería Fitnessgram. La muestra fue de 193 niños y niñas, entre ocho y 12 años. Los resultados se determinaron, por medio de estadísticos descriptivos y correlación de Pearson. Estos resultados, evidenciaron una r=-0,52 y -0,72 para niño y niña respectivamente, entre el porcentaje de grasa y la capacidad cardiovascular. Las correlaciones entre el índice de masa corporal y peso corporal, con el porcentaje de grasa fueron, r=0,59 niña 0,76 y niño y r=0,46 niña y 0,67 niño respectivamente, indicando que, a mayor masa corporal mayor grasa. La correlación entre masa grasa y el test de barra fija fue inversa, pero no alta, r=-0,23 y -0,24, sin embaro, cuando este test se correlacionó con el índice de masa corporal, dicha correlación fue mayor, r=-0,57 y -0,78, reflejando que, la masa corporal, afectó la resistencia en la barra. La flexibilidad y agilidad, no se alteraron por la masa grasa, r < 0,20. Como conclusión, se evidencia que, la masa grasa puede disminuir la capacidad cardiovascular y resistencia a la fuerza, sin embargo, la flexibilidad y la velocidad-agilidad pueden no alterarse.  Abstract. The following study aimed at determining the correlation between body composition and physical condition in sixth grade students from the high school Institución Educativa Moderna in Tuluá, Colombia. It was carried as a non-experimental, descriptive, and correlational study. The assessment of body composition was carried out using the body mass index and the fat percentage based on Slaughter and Lohmann formula. Physical condition was determined by using the Fitnessgram battery. The sample consisted of 193 boys and girls, around eight and 12 years old. The results were determined by means of descriptive statistics and Pearson correlation. These results showed r = -0.52 and -0.72 for boys and girls respectively, after correlating the percentage of fat and cardiovascular capacity. The correlation of their body mass index and their body weight, towards the percentage of fat were: r = 0.59 girl, 0.76 boy and r = 0.46 girl and 0.67 boy respectively, indicating that, the higher the body mass the higher the increase of fat. The correlation between fat mass and the fixed bar test was inverse, but not high: r = -0.23 and -0.24. However, when this test was correlated with the body mass index, that correlation was higher: r = -0.57 and -0.78, reflecting that the body mass affected the resistance at the bar. Flexibility and agility were not altered by fat mass: r <0.20. In conclusion, it is evidenced that fat mass can decrease cardiovascular capacity and resistance to strength, however, flexibility and speed-agility may not be altered.

scholarly journals GB Apprentice Jockeys Do Not Have the Body Composition to Make Current Minimum Race Weights: Is It Time to Change the Weights or Change the Jockeys?

2020 ◽  
Vol 30 (2) ◽  
pp. 101-104
Author(s):  
George Wilson ◽  
Jerry Hill ◽  
Daniel Martin ◽  
James P. Morton ◽  
Graeme L. Close
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Fat Mass ◽  
Minimum Weight ◽  
Urine Osmolality ◽  
Well Being ◽  
The Body ◽  
Current Minimum ◽  
Current Weight ◽  
Made In

Flat jockeys in Great Britain (GB) are classified as apprentices if they are aged less than 26 years and/or have ridden less than 95 winners. To gain experience, apprentices are allocated a weight allowance of up to 7 lb (3.2 kg). Given that there is no off-season in GB flat horseracing, jockeys are required to maintain their racing weight all year round. In light of recent work determining that current apprentices are considerably heavier than previous generations and that smaller increases have been made in the minimum weight, the aim of this study was to assess if the minimum weight in GB was achievable. To make the minimum weight (50.8 kg) with the maximal weight allowance requires a body mass of ∼46.6 kg while maintaining a fat mass >2.5 kg (the lowest fat mass previously reported in weight-restricted males). Thirty-two male apprentice jockeys were assessed for body composition using dual-energy X-ray absorptiometry. The mean (SD) total mass and fat mass were 56 (2.9) kg and 7.2 (1.8) kg, respectively. Given that the lowest theoretical body mass for this group was 51.2 (2.3) kg, only one of 32 jockeys was deemed feasible to achieve the minimum weight with their current weight allowance and maintaining fat mass >2.5 kg. Furthermore, urine osmolality of 780 (260) mOsmol/L was seen, with 22 (out of 32) jockeys classed as dehydrated (>700 mOsmols/L), indicating that body mass would be higher when euhydrated. Additionally, we observed that within new apprentice jockeys licensed during this study (N = 41), only one jockey was able to achieve the minimum weight. To facilitate the goal of achieving race weight with minimal disruptions to well-being, the authors’ data suggest that the minimum weight for GB apprentices should be raised.

scholarly journals Indeks Massa Tubuh dengan Keseimbangan Statis Pengguna Transtibial Prosthesis

2017 ◽  
Vol 8 (3) ◽  
pp. 425
Author(s):  
Nur Rachmat ◽  
Muhammad Syaifudin ◽  
Hanifah Hanifah
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Fat Mass ◽  
Quantitative Research ◽  
The Body ◽  
Static Balance ◽  
Normal Body Mass Index ◽  
Cross Sectional ◽  
Transtibial Prosthesis ◽  
Highly Correlated

<p>The balance of a person's body is affected by the Body Mass Index. Body Mass Index is the easiest way to estimate obesity as well as to be highly correlated with body fat mass, but it is also important to identify obese patients who have a risk of medical complications. Purpose of this study was to know correlation body mass index with the static balance of transtibial prosthesis user. The study was a quantitative research with a cross-sectional design. Location research in BBRSBD Prof. Dr. Soeharso Surakarta with sample were patients with post-amputation of transtibial as many as 15 people. Analysis of data was used correlation Pearson test. There was a correlation between body mass index with the static balance of transtibial prosthesis user, the coefficient correlation of -0.646 with significant and levels of correlation moderate. The value of normal body mass index has the highest static balance than lean body mass index and fat. Mass Index of the skinny body has a moderate static balance. Obese body mass index has the lowest static balance of body mass index thin and normal. </p>

Anthropometric Characteristics and Delayed Growth in Young Artistic Gymnasts

2009 ◽  
Vol 24 (2) ◽  
pp. 91-96
Author(s):  
Theophanis Siatras ◽  
Malamati Skaperda ◽  
Dimitra Mameletzi
Keyword(s):  
Body Mass ◽  
Female Athletes ◽  
Young Male ◽  
The Body ◽  
Fat Percentage ◽  
Male And Female ◽  
Body Dimensions ◽  
Anthropometric Characteristics ◽  
Female Gymnasts ◽  
Delayed Growth

This article addresses the problem of whether high-impact artistic gymnastics training could cause delayed growth in young male and female athletes, as is believed to be the case in professional dancers. The main anthropometric characteristics of young gymnasts were measured, and the differences between gymnasts, swimmers, and nonathletes were examined. Twenty competitive gymnasts, 20 competitive swimmers, and 20 nonathletes, aged 10 to 12 yrs old, volunteered to participate in this study. Testing took place in a training field and the equipment consisted of portable anthropometric instruments. Measurements concerned body mass, stature, segment lengths (arm, forearm, trunk, thigh, and calf), body breadths (biacromical, biiliac, wrist, and ankle), circumferences (arm and thigh), and skinfold thicknesses (arm, thigh, and calf). Triceps and calf skinfold thicknesses were used to estimate the body fat percentage (%BF). The lean body mass percentage (%LBM) and the LBM/BF ratio were also evaluated. Moreover, cross-sectional areas of the arm (CSAarm) and thigh (CSAthigh) were calculated, taking into consideration the limb's circumference and four circumferential skinfolds. The results showed that, generally, young male and female gymnasts had smaller body dimensions in some anthropometric characteristics compared to swimmers and nonathletes. This mainly focused on body weight, arm and calf lengths, biiliac/biacromial breadths ratio, skinfold thicknesses, and %BF. However, gymnasts had higher %LBM, LBM/BF ratio, and CSAarm. No significant differences were found in the rest of body dimensions and composition. Although young male and female gymnasts appeared to have some lower anthropometric characteristics compared to the other two groups, it has not clearly demonstrated a delay in their somatic growth and skeletal development.

Predicting body fat and body mass in moose with ultrasonography

1998 ◽  
Vol 76 (4) ◽  
pp. 717-722 ◽  
Author(s):  
Thomas R Stephenson ◽  
Kris J Hundertmark ◽  
Charles C Schwartz ◽  
Victor Van Ballenberghe
Keyword(s):  
Body Mass ◽  
Body Fat ◽  
Fat Mass ◽  
Reproductive Potential ◽  
Primary Energy ◽  
The Body ◽  
Total Body Fat ◽  
Fat Thickness ◽  
Free Body ◽  
Total Body

Lipids are the primary energy store of the body and estimation of these reserves provides an indication of nutritional status in moose (Alces alces). Estimates of total body fat enhance our understanding of reproductive potential, survival rate, energy balance, and nutritional carrying capacity. We developed predictive equations of total body fat and body mass from ultrasonographic fat measurements for application in live animals. We detected a strong linear relationship (r2 = 0.96) between ingesta-free body fat and rump fat thickness measured by ultrasonography. Rump fat thickness was measurable over a range of body fat levels (5.8-19.1%). Rump fat mass (r2 = 0.92) and kidney fat mass (r2 = 0.95) were curvilinearly related to ingesta-free body fat level. For adult females, total length and chest girth were not related to body mass. Ingesta-free body fat, however, explained 81% of the variability in body mass, and ultrasonically measured rump fat thickness predicted body mass (r2 = 0.80).

scholarly journals Modeling the Links Between Young Swimmers’ Performance: Energetic and Biomechanic Profiles

2010 ◽  
Vol 22 (3) ◽  
pp. 379-391 ◽  
Author(s):  
Tiago M. Barbosa ◽  
Mário Costa ◽  
Daniel A. Marinho ◽  
Joel Coelho ◽  
Marc Moreira ◽  
...  
Keyword(s):  
Structural Equation ◽  
Swimming Performance ◽  
Flow Analysis ◽  
Equation Modeling ◽  
Swimming Velocity ◽  
Stroke Index ◽  
Analysis Model ◽  
Stroke Length ◽  
Propulsive Efficiency ◽  
Biomechanical Assessment

The aim was to develop a path-flow analysis model for young swimmers’ performance based on biomechanical and energetic parameters, using structural equation modeling. Thirty-eight male young swimmers served as subjects. Performance was assessed by the 200-m freestyle event. For biomechanical assessment the stroke length, the stroke frequency and the swimming velocity were analyzed. Energetics assessment included the critical velocity, the stroke index and the propulsive efficiency. The confirmatory model explained 79% of swimming performance after deleting the stroke index-performance path, which was nonsignificant (SRMR = 0.06). As a conclusion, the model is appropriate to explain performance in young swimmers.

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