scholarly journals Volume estimations for combined free-weight and rubber-band resistance exercise

Kinesiology ◽  
2017 ◽  
Vol 49 (2) ◽  
pp. 169-177 ◽  
Author(s):  
Todd C. Shoepe ◽  
Jeanette M. Ricci

Volume, or the total work performed during resistance training is one of the vital variables of resistance exercise programming. The most common definition in use by practitioners is sets x reps x external weight. While appropriate for linear loading incurred through free-weight resistance exercise, this inadequately addresses the nonlinear loading incurred with rubber resistance, a relatively new loading technique. The purpose of this investigation was to derive a theoretical model to describe a method of volume calculation for rubber band plus free-weight exercise. Men (n=51; age 19.5±1.6 years; body height 1.76±0.07 meters; body weight 77.3±11.3 kilograms) and women participants (n=66; age 18.9±1.1 years; body height 1.65±0.07 meters; body weight 62.8±9.1 kilograms) were measured for band lengths incurred at: squat with knee extended position, squat with flexed position, and change in band length was then calculated. Significant gender differences were seen for band length change as a percentage of body height (p<0.5) during the squat, which mandated separate volume equations (females=33.8%; males=35.3% of body height). Equations were determined for total external volume estimation in kgm=[0.338(m+2c2+(ln(h)-0.383)2c1)]/g and kgm=[0.352(m+2c2+(ln(h)-0.382)2c1)]/g for females and males, respectively, where m is the total external resistance, c2 and c1 are constants derived from rubber-band loading parameters, h is the body height of the participant, and g is gravitational acceleration. This work provides practitioners and researchers with a simple theoretical method for work estimation using participant’s body height to estimate displacement values during the squat exercise.

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xin Li ◽  
Jin Zhu ◽  
Jun An ◽  
Yuqing Wang ◽  
Yili Wu ◽  
...  

AbstractCongenital Heart Defects (CHDs) are associated with different patterns of malnutrition and growth retardation, which may vary worldwide and need to be evaluated according to local conditions. Although tetralogy of Fallot (TOF) is one of the first described CHDs, the etiology outcomes in growth and development of TOF in early age child is still unclear in most cases. This study was designed to investigate the growth retardation status of Chinese pediatric TOF patients under 5 years old. The body height, body weight and body mass index (BMI) of 262 pediatric patients (138 boys and 124 girls) who underwent corrective surgery for TOF between 2014 and 2018 were measured using conventional methods. The average body height, body weight and BMI of the patients were significantly lower than WHO Child Growth Standards, while the most affected was body height. Meanwhile, higher stunting frequency and greater deterioration of both the body height and weight happened in elder age (aged 13–60 months) rather than in infant stage (aged 0–12 months) among these patients. Our results confirmed that intervention should be given at early age to prevent the growth retardation of TOF patients getting severer.


Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 2064
Author(s):  
Zhenyu Wei ◽  
Ke Wang ◽  
Hui Wu ◽  
Zhen Wang ◽  
Chuanying Pan ◽  
...  

Stature and weight are important growth and development traits for animals, which also significantly affect the productivity of livestock. Polymorphic adenoma gene 1 (PLAG1) is located in the growth-related quantitative trait nucleotides (QTN), and its variation has been determined to significantly affect the body stature of bovines. This study found that novel 15-bp InDel could significantly influence important growth traits in goats. The frequencies of genotypes of the 15-bp mutation and relationship with core growth traits such as body weight, body height, height at hip cross, chest circumference, hip width and body index were explored in 1581 individuals among 4 Chinese native goat breeds. The most frequent genotypes of Shaanbei white Cashmere goat (SWCG), Inner Mongolia White Cashmere goat (IMCG) and Guanzhong Dairy goat (GZDG) were II genotypes (insertion/insertion), and the frequency of ID genotype (insertion/deletion) was found to be slightly higher than that of II genotype in Hainan Black goat (HNBG), showing that the frequency of the I allele was higher than that of the D allele. In adult goats, there were significant differences between 15-bp variation and body weight, chest circumference and body height traits in SWCG (p < 0.05). Furthermore, the locus was also found to be significantly correlated with the body index of HNBG (p = 0.044) and hip width in GZDG (p = 0.002). In regard to lambs, there were significant differences in height at the hip cross of SWCG (p = 0.036) and hip width in IMWC (p = 0.005). The corresponding results suggest that the 15-bp InDel mutation of PLAG1 is associated with the regulation of important growth characteristics of both adult and lamb of goats, which may serve as efficient molecular markers for goat breeding.


1972 ◽  
Vol 27 (2) ◽  
pp. 305-312 ◽  
Author(s):  
Sharad V. Apte ◽  
Leela Iyengar

1. The body composition was determined of forty-one fetuses of different gestational ages born to mothers belonging to a low socio-economic group of the population.2. With increasing gestational age the water content fell from 88% at 28 weeks to 76% at term; the fat content increased from 2.1% to 11.2% and the protein content increased from 6.9 to 9.3%.3. The changes in body composition were more closely related to body-weight than to gestational age.4. The calcium, Phosphorus and magnesium contents of the body per unit fat-free weight progressively increased with gestational age, and at term the values appeared to be considerably lower than those reported in the literature. The Ca:P ratio was constant at different body-weights.5. The body iron content per unit of fat-free weight increased marginally with increasing gestational age. The value was almost 30% lower than the values reported from elsewhere.6. It is suggested that chemical composition and nutrient stores of the developing foetus can be considerably influenced by the state of maternal nutrition.


2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Turki M. AlHarbi ◽  
Abdullaziz AlGarni ◽  
Fasial AlGamdi ◽  
Mona Jawish ◽  
Tariq Ahmad Wani ◽  
...  

Objective.To determine the accuracy of the Broselow Tape (BT) versions 2007 and 2011 in estimating weight among pediatric population.Methods.A cross-sectional study was conducted at King Fahad Medical City and six schools across Riyadh province on 1–143-month-old children. BT 2007 and 2011 estimated weights were recorded. Both tapes via the child’s height produce an estimated weight, which was compared with the actual weight.Results.A total of 3537 children were recruited. The height (cm) of the subjects was97.7±24.1and the actual weight (kg) was16.07±8.9, whereas the estimated weight determined by BT 2007 was15.87±7.56and by BT 2011 was16.38±7.95. Across all the five age groups, correlation between actual weight and BT 2007 ranged between 0.702 and 0.788, while correlation between actual weight and BT 2011 ranged between 0.698 and 0.788. Correlation between BT 2007 and BT 2011 across all the five age groups ranged from 0.979 to 0.989. Accuracy of both the tape versions was adversely affected when age was >95 months and body weight was >26 kilograms.Conclusions.Our study showed that BT 2007 and 2011 provided accurate estimation of the body weight based on measured body height. However, 2011 version provided more precise estimate for weight.


2019 ◽  
Vol 9 (10) ◽  
pp. 1388-1394
Author(s):  
Hong Deng ◽  
Wei Zhang ◽  
Dingguo Ruan ◽  
Dezhi Chen ◽  
Xiaoyang Xu ◽  
...  

Obesity is a modern disease and the cause is quite complicated. This study explores the effects of aerobic and resistance exercise on weight loss and their relationship with the PGC-1α/Irisin/UCP-1 signaling pathway. First, we selected 52 obese students for aerobic and resistance exercise. Second, we established an obesity rat model, and then subjected them to 12 weeks of aerobic and resistance exercise. The body weights and blood lipid contents of all the subjects were measured, and mRNA and protein expressions were determined via real-time PCR and western blot. In obese students, aerobic exercise and the combination of aerobic and resistance exercise significantly reduced body weight and blood lipid levels. In obese model rats, aerobic and resistance exercise significantly reduced the body weight, blood lipid levels, and increased the PGC-1, Irisin, and UCP-1 levels. Furthermore, the combined effects of aerobic and resistance exercise were similar to those of prolonged aerobic exercise in both human subjects and model rats. The mechanism of weight loss via aerobic and resistance exercise may be related to the PGC-1α/Irisin/UCP-1 pathway, and the combination of aerobic and resistance exercise may be a more suitable weight loss option for obese patients.


2021 ◽  
Vol 2 (1) ◽  
pp. 19
Author(s):  
Suci Eka Putri ◽  
Adelina Irmayani Lubis

Body mass index (BMI) is to monitor nutritional status adults, especially those related to deficiency and overweight. Body fat percentage can describe the risk of degenerative diseases.This study was conducted to measure the relationship between BMI and body fat percentage. Methods An analytical study was conducted to 41 male and 51 female participant from Universitas Teuku Umar. The body weight was measured using scales, whereas the body height was measured using microtoise. The body fat percentage was measured using Karada Scan. The BMI was calculated by dividing the body weight in kilogram divided by body height in meter square. Data was collected from 16-18th February 2021 and analyzed by Pearson’s correlation test. The results showed BMI underweight, normal, and overweight were 10,9, 57,6, and 31,5. High body fat percentage in men were 75,6% and in women were 35,5%. There is a relationship between the nutritional status of the women group and the body fat percentage with p-value is obtained = 0.021. Furthermore, for men, there is no relationship between nutritional status in the men group and the body fat percentage. There is a relationship between nutritional status and body fat percentage in women. Among this population, BMI can still be used to determine body fat percentage


2019 ◽  
Vol 7 (1) ◽  
pp. 17-32
Author(s):  
Sultan Fredyansyah Bagaskara Djula ◽  
Sapti Widyarti Djula

Introduction: When both parents are obesity, thus the children are 80% potentially become overweight or obesity. If one of the parent is overweight or obesity, thus the children are 40% potentially to become overweight or obesity. The purpose of the study is to analyze is there any significant relationship between parents’ body shape with overweight among students at Singkawang Adventist School.  Method: The method of the study is descriptive with quantitative method and the cross sectional design. Sampling technique is total sampling among the overweight students. Number of respondens are 35 persons which have been measure body height, body weight and determined Body Mass Index (BMI). Data processing using SPSS Program.  Result: The results of the study show that the status of overweight students is obesity and parents’ body shape are overweight (there is no significant relationship between obesity in adolescents with the body shape of the father with a significance of (0.086) with a ρ value> 0.05 as well as no significant relationship between obesity in adolescents with the body shape of their mothers, with a significance of  (0.411) with ρ value> 0.005). There is no significant relationship between overweight students with parents’ body shape. There is not enough evidence to refuse null hypothesis.  Disscussion: Recommendation are given to Singkawang Adventist School Students in order to maintain a healthy lifestyle and give effort to reduce body weight. To the next researcher to do research with bigger sample size.   Keywords : overweight, obesity, Body Mass Index(BMI), body shape 


Author(s):  
Siti Helmyati ◽  
Setyo Utami Wisnusanti ◽  
Dominikus Raditya Atmaka

<p><strong>ABSTRAK</strong></p><p><em><strong>Latar belakang:</strong></em> Proporsi balita gizi lebih dan gizi kurang masih cukup tinggi di Indonesia. Penanggulangan masalah gizi sangat penting dilakukan karena memiliki dampak kesehatan jangka panjang. Penyelesaian masalah gizi buruk dan gizi lebih di Indonesia terkendala dengan kurangnya efektivitas program intervensi dan pola asuh yang diberikan orang tua kepada anak. Salah satu hal yang mempengaruhi keberhasilan penanggulangan masalah gizi adalah persepsi orang tua terhadap status gizi balita.</p><p><em><strong>Tujuan:</strong></em> Penelitian ini bertujuan untuk menilai persepsi orang tua terhadap status gizi balita yang dikelompokkan antara berat badan atau tinggi badan menurut umur.</p><p><em><strong>Metode:</strong></em> Penelitian menggunakan desain potonglintang dengan memberikan kuesioner penilaian persepsi kepada orangtua yang memiliki anak balita dan datang ke posyandu di 11 Padukuhan di Kecamatan Seyegan, DI Yogyakarta. Penelitian berfokus pada penilaian persepsi orang tua terhadap berat badan dan tinggi badan anak menurut umur dan apakah orang tua mengalami underestimasi atau overestimasi terhadap status gizi anak-anaknya.</p><p><strong><em>Hasil:</em></strong> Terdapat 89 responden yang bersedia mengikuti penelitian ini. Dari jumlah tersebut, 27 orang tua (30%) memiliki overestimasi bahwa anaknya gemuk atau normal, padahal apabila menurut kurva z-skor, anak tergolong kurus. Terdapat 10 orang tua (11,2%) underestimasi terhadap tinggi badan anak yang sebenarnya normal atau tinggi namun dianggap pendek. Sebaliknya, 5 orang tua (5,6%) mengalami overestimasi dengan menganggap tinggi badan anaknya normal atau tinggi padahal sebenarnya tergolong pendek menurut kurva z-skor.</p><p><em><strong>Kesimpulan:</strong></em> Masih terdapat kesalahan persepsi orang tua terhadap status gizi anaknya. Penelitian lebih lanjut diperlukan untuk mendalami faktor-faktor yang mempengaruhi persepsi dan bagaimana cara mengubahnya sehingga pola asuh orang tua dan penerimaan terhadap program perbaikan gizi menjadi lebih baik.</p><p><strong>KATA KUNCI:</strong> persepsi; berat badan; tinggi badan; balita; status gizi</p><p><strong><br /></strong></p><p><strong>ABSTRACT </strong></p><p><em><strong>Background:</strong></em> The proportion of over- and under-nutrition is still high in Indonesia. Overcoming the nutritional problems is important since it can lead to long term health impacts. However, there are some problems that inhibit the intervention program such as low effectiveness and inappropriate parenting. One thing that affects the success of the program is about parents’ perception of the nutritional status of their children.</p><p><em><strong>Objectives:</strong></em> The study aimed to identify the perception of the parents towards the nutritional status of their children, which is categorized as body weight and height to age.</p><p><em><strong>Methods:</strong></em> The research use cross-sectional design by giving the questionnaire to the parents who have children under-five and go to Posyandu in 11 villages in Seyegan, DI Yogyakarta. The study focused on the judgment of the parents towards the height and weight to the age of their children and whether the parents under- or overestimate the nutritional status of their children.</p><p><em><strong> Results:</strong> </em>There were 89 respondents following the study. From the number, there were 27 parents (30%) who overestimate their children by assuming the children to be overweight while according to z-score they was categorized as wasted. There were 10 parents (11.2%) who underestimate the height of their children by assuming that their children was stunted while they was not. On the other hand, 5 parents (5.6%) overestimate the height of their children by saying they had normal height while the fact they were stunted.</p><p><em><strong>Conclusion:</strong></em> There is still misperception among the parents about the nutritional status of their children. Further study is needed to identify what factors affecting the perception and how to change it so that the nutritional intervention program and parenting can be better.</p><p><strong>KEYWORDS:</strong> perception; body weight; body height; children under-five; nutritional status</p>


Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1883
Author(s):  
Mingli Wu ◽  
Haidong Zhao ◽  
Xiaoqin Tang ◽  
Qi Li ◽  
Xiaohua Yi ◽  
...  

The GH growth axis plays an important role in the growth and development of animals and runs through the whole life of animals. Many studies have shown that molecular mutations in key genes of the GH axis will affect the growth and development of animals. The purpose of this study was to explore the distribution characteristics of InDels of GHR, GHRH, and GHRHR in seven Chinese sheep populations, and to further explore the relationship between InDels and sheep growth traits. GHR showed high variation in Chinese sheep, and GHR-53 showed the highest minimum allele frequency (MAF). There was only one InDel mutation site in both GHRH and GHRHR. The genotype frequencies of Hu sheep (HS), Tong sheep (TS), and Lanzhou fat-tail sheep (LFTS) were quite different from other breeds. The association between GHR, GHRH, and GHRHR InDels and body size traits in seven varieties were analyzed. The results showed that there was no significant relationship between GHRH and body size traits in the seven sheep populations. There was a positive association between GHR-21 and hip height of LFSH (p < 0.05). GHR-43 reduced body height and chest depth of Small tail han sheep (STHS) and hip width of TS. GHR-44 significantly affected the body weight of HS, the body height of STHS and the head depth of TS. GHR-53 significantly reduced cannon girth of HS, chest of STHS and forehead width of TS. GHRHR-2 significantly reduced the body weight of LFHS. To sum up, this study revealed the effects of GHR, GHRH, and GHRHR InDels on sheep phenotypic traits, which indicated their potential application prospects in the genetic improvement of mutton sheep.


2011 ◽  
Vol 175-176 ◽  
pp. 917-922
Author(s):  
Hong Mu ◽  
Xin Lu

When an enterprise produces school uniforms, it often takes the clothing specification and size based on the students’ height and weight as the basic information. This kind of method relys on the experience, it is difficult to meet the developing requirement of clothing digitization. This paper analyzes characteristics of the male university students’ bodies in Liaoning area, based on the survey of 270 university students’ bodies, in which 15 body measures were taken. The body characteristics and the data distribution of these people were obtained according to the national clothing size standard. Through the regression analysis of the body height to 4 lengths, such as the cervical vertebral height, the sleeve length and so on, and the chest girth to 8 girths, the key measures are obtained and the regression equation is established. The multivariate analysis based on the height and the weight proves that the waist girth is mostly influenced. Through the regression equation of the waist girth to the height and the body weight, the influence of body weight change on the waist girth with a certain height can be obtained, and the chest girth and the hip girth as well. It’s helpful to determine the size specification of the school uniform. This research also provides a reference to digitizing of the clothing design and manufacture.


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