Risk Factors and Predictors of Hypothermia and Dropouts During Open-Water Swimming Competitions

2021 ◽  
pp. 1-8
Author(s):  
Joffrey Drigny ◽  
Marine Rolland ◽  
Robin Pla ◽  
Christophe Chesneau ◽  
Tess Lebreton ◽  
...  
Keyword(s):  
Body Fat ◽  
Multiple Logistic Regression Analysis ◽  
Open Water ◽  
Body Fat Percentage ◽  
Lower Body ◽  
Fat Percentage ◽  
Increased Risk ◽  
Open Water Swimming ◽  
Study Participants ◽  
Personal Questionnaire

Purpose: To measure core temperature (Tcore) in open-water (OW) swimmers during a 25-km competition and identify the predictors of Tcore drop and hypothermia-related dropouts. Methods: Twenty-four national- and international-level OW swimmers participated in the study. Participants completed a personal questionnaire and a body fat/muscle mass assessment before the race. The average speed was calculated on each lap over a 2500-m course. Tcore was continuously recorded via an ingestible temperature sensor (e-Celsius, BodyCap). Hypothermia-related dropouts (H group) were compared with finishers (nH group). Results: Average prerace Tcore was 37.5°C (0.3°C) (N = 21). 7 participants dropped out due to hypothermia (H, n = 7) with a mean Tcore at dropout of 35.3°C (1.5°C). Multiple logistic regression analysis found that body fat percentage and initial Tcore were associated with hypothermia (G2 = 17.26, P < .001). Early Tcore drop ≤37.1°C at 2500 m was associated with a greater rate of hypothermia-related dropouts (71.4% vs 14.3%, P = .017). Multiple linear regression found that body fat percentage and previous participation were associated with Tcore drop (F = 4.95, P = .019). There was a positive correlation between the decrease in speed and Tcore drop (r = .462, P < .001). Conclusions: During an OW 25-km competition at 20°C to 21°C, lower initial Tcore and lower body fat, as well as premature Tcore drop, were associated with an increased risk of hypothermia-related dropout. Lower body fat and no previous participation, as well as decrease in swimming speed, were associated with Tcore drop.

scholarly journals Early Risk Factors for Obesity in the First 1000 Days—Relationship with Body Fat and BMI at 2 Years

2021 ◽  
Vol 18 (15) ◽  
pp. 8179
Author(s):  
Mercedes Díaz-Rodríguez ◽  
Celia Pérez-Muñoz ◽  
Jesús Carretero-Bravo ◽  
Catalina Ruíz-Ruíz ◽  
Manuel Serrano-Santamaría ◽  
...  
Keyword(s):  
Risk Factors ◽  
Weight Gain ◽  
Body Fat ◽  
Early Pregnancy ◽  
Body Fat Percentage ◽  
Z Score ◽  
Fat Percentage ◽  
Early Risk ◽  
Early Risk Factors ◽  
Increased Risk

(1) Background: Obesity is defined as an excessive accumulation of body fat. Several early developmental factors have been identified which are associated with an increased risk of childhood obesity and increased adiposity in childhood. The primary objective of the present study is to analyse the effect of various early risk factors on Body Mass Index (BMI) and body fat percentage at 2 years of age. (2) Methods: A prospective cohort study design was used, with the sample consisting of 109 mother-child pairs from whom data were collected between early pregnancy and 2 years old. Adiposity was determined based on skinfold measurements using the Brooks and Siri formulae. Mean comparison tests (Student’s t-test and ANOVAs) and multiple linear regression models were used to analyse the relationship between early programming factors and dependent variables. (3) Results: Maternal excess weight during early pregnancy (β = 0.203, p = 0.026), gestational smoking (β = 0.192, p = 0.036), and accelerated weight gain in the first 2 years (β = − 0.269, p = 0.004) were significantly associated with high body fat percentage. Pre-pregnancy BMI and accelerated weight gain in the first 2 years were associated with high BMI z-score (β = 0.174, p = 0.047 and β = 0.417, p = 0.000 respectively). The cumulative effect of these variables resulted in high values compared to the baseline zero-factor group, with significant differences in BMI z-score (F = 8.640, p = 0.000) and body fat percentage (F = 5.402, p = 0.002) when three factors were present. (4) Conclusions: The presence of several early risk factors related to obesity in infancy was significantly associated with higher BMI z-score and body fat percentage at 2 years of age. The presence of more than one of these variables was also associated with higher adiposity at 2 years of age. Early prevention strategies should address as many of these factors as possible.

Expanded normal weight obesity and blood pressure in Chinese adults: a community-based cross-sectional study

2019 ◽  
Vol 25 (3) ◽  
pp. 256 ◽  
Author(s):  
Huijing He ◽  
Li Pan ◽  
Feng Liu ◽  
Jingang Ma ◽  
Zhiping Hu ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Body Fat ◽  
Normal Weight ◽  
Shaanxi Province ◽  
High Risk Population ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Cross Sectional ◽  
Increased Risk ◽  
Normal Weight Obesity

The study aimed to explore the independent association between expanded normal weight obesity categories and blood pressure among adults aged 20–80 years in China. By cross-sectional design, a total of 4279 adults living in Shaanxi Province, China, were selected from communities via multi-stage stratified cluster sampling in 2014. Information on anthropometric, body composition and blood pressure was collected and analysed. Expanded normal weight obesity (ENWO) categories were used to identify the level of bodyweight based on the combination of body mass index (BMI) and body fat percentage (BFP) categories. The age- and sex-standardised prevalence of hypertension increased within ENWO groups, from 10.12% in the underweight-low body fat group to 45.92% in the obesity-high body fat group. In under or normal weight participants, body fat percentage was found independently associated with hypertension in men, with an adjusted odds ratio of 3.69 in the fourth quartile of BFP compared with the first one. However, this effect was not observed in women. BFP was independently associated with increased risk of hypertension, especially in men. People with normal BMI should be re-identified as a high-risk population based on BFP level when it comes to hypertension prevention in primary healthcare settings.

scholarly journals Physical fitness is inversely related with body mass index and body fat percentage in soccer players aged 16-18 years

2012 ◽  
Vol 65 (11-12) ◽  
pp. 470-475 ◽  
Author(s):  
Pantelis Nikolaïdis
Keyword(s):  
Body Mass Index ◽  
General Population ◽  
Physical Fitness ◽  
Body Mass ◽  
Body Fat ◽  
Sport Participation ◽  
Soccer Players ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Increased Risk

Introduction: Adolescents are at increased risk for the development of obesity, while sport has been suggested as an effective means against adolescent obesity. The objectives of this study were to examine (a) the prevalence of overweight/obesity, (b) the relationship between body mass index and body fat percentage, and (c) the association between body mass index, body fat and physical fitness in soccer players aged 16-18 yr. Material and Methods: Members (n=109, aged 17.0?0.5 yr) of competitive soccer clubs were examined for physical and physiological characteristics. Results: Based on international body mass index cut-off points, 18.3% (n=20) of participants were classified as overweight. Body mass index was highly correlated with body fat percentage (r=0.70, p<0.001). Body fat percentage was in inverse relationship with aerobic power (r=-0.21, p=0.029), maximal anaerobic power (r=-0.20, p=0.044) and local muscular endurance (r=-0.39, p<0.001), while corresponding values of body mass index were non-significant (r=-0.05, p=0.614; r=0.03, p=0.771; r=-0.12, p=0.220, respectively). However, both body fat percentage and body mass index were inversely related with fatigue index of Wingate anaerobic test (r=-0.26, p=0.009; r=-0.29, p=0.003, respectively). Conclusions: The strong relationship between body mass index and body fat percentage suggest the further use of body mass index in adolescent soccer players. The findings confirmed previous observations on general population about the negative effect of overweight and fatness on physical fitness. The prevalence of overweight among participants was similar with what is observed in general population. Therefore, sport participation cannot guarantee physiological body mass and body composition, and it is necessary to prescribe exercise targeting body mass and fat control.

scholarly journals Network Mendelian randomization study: exploring the causal pathway from insomnia to type 2 diabetes

2022 ◽  
Vol 10 (1) ◽  
pp. e002510
Author(s):  
Wen Xiuyun ◽  
Lin Jiating ◽  
Xie Minjun ◽  
Li Weidong ◽  
Wu Qian ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Body Fat ◽  
Mendelian Randomization ◽  
Body Fat Percentage ◽  
Causal Association ◽  
Fat Percentage ◽  
Waist To Hip Ratio ◽  
Increased Risk ◽  
Causal Pathway

IntroductionInsomnia is a novel pathogen for type 2 diabetes mellitus (T2DM). However, mechanisms linking insomnia and T2DM are poorly understood. In this study, we apply a network Mendelian randomization (MR) framework to determine the causal association between insomnia and T2DM and identify the potential mediators, including overweight (body mass index (BMI), waist-to-hip ratio, and body fat percentage) and glycometabolism (HbA1c, fasting blood glucose, and fasting blood insulin).Research design and methodsWe use the MR framework to detect effect estimates of the insomnia–T2DM, insomnia–mediator, and mediator–T2DM associations. A mediator between insomnia and T2DM is established if MR studies in all 3 steps prove causal associations.ResultsIn the Inverse variance weighted method, the results show that insomnia will increase the T2DM risk (OR 1.142; 95% CI 1.072 to 1.216; p=0.000), without heterogeneity nor horizontal pleiotropy, strongly suggesting that genetically predicted insomnia has a causal association with T2DM. Besides, our MR analysis provides strong evidence that insomnia is causally associated with BMI and body fat percentage. There is also suggestive evidence of an association between insomnia and the waist-to-hip ratio. At the same time, our results indicate that insomnia is not causally associated with glycometabolism. Higher BMI, waist-to-hip ratio, and body fat percentage levels are strongly associated with increased risk of T2DM.ConclusionsGenetically predicted insomnia has a causal association with T2DM. Being overweight (especially BMI and body fat percentage) mediates the causal pathway from insomnia to T2DM.

scholarly journals Combined Aerobic and Resistance Training Lowers Body Fat Percentage in Rural Black South African Women

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Samuel Ntshaba ◽  
Mbali Mhlongo ◽  
Henrico Erasmus ◽  
Ina Shaw ◽  
Brandon Stuwart Shaw
Keyword(s):  
Body Composition ◽  
Resistance Training ◽  
Cardiorespiratory Fitness ◽  
Body Fat ◽  
Aerobic Training ◽  
Black College ◽  
Control Group ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Increased Risk

Background: Obesity is currently one of the most dominating diseases affecting younger adults in South Africa. This is commonly caused by a poor lifestyle, which may lead to an increased risk of non-communicable diseases. Objectives: The aim of the study was to examine if a six-week concurrent resistance and aerobic training program could elicit body composition and cardiorespiratory changes in rural black college women. Methods: Forty sedentary black females (aged 18 - 25 years) were randomly assigned to a combined resistance and aerobic training (COM) group (n = 20) or a control group (n = 20). The COM group participated in four times weekly aerobic and resistance training. Aerobic training consisted of 30 minutes a session (week 1 - 3: cycling for 3 minutes at 60% heart rate reserve (HRR), followed by 2 minutes at 50% HRR; week 4 - 6: 3 minutes at 70% HRR, followed by 2 minutes at 60% HRR). Resistance training consisted of participants training at 50% of their one-repetition maximum (1-RM) for week 1 - 3, doing 3 sets of 15 repetitions; for week 4 - 6 at 60% 1-RM, doing 3 sets of 15 repetitions. Results: Following the intervention, the COM group significantly (P ≤ 0.05) decreased their body fat percentage when compared to the control group (P = 0.006; d = 0.9), while no significant changes were observed in waist-to-hip ratio (P = 0.223) and cardiorespiratory endurance (P = 0.260) in either group. Conclusions: Although body composition (especially waist circumference and body fat percentage) and cardiorespiratory fitness are recommended as the main targets of physical activity programs aimed at preventing CVD in college students, this study demonstrated that a six-week concurrent program improved body fat percentage, and not WHR and cardiorespiratory fitness, in sedentary rural college-aged females. Further, these findings suggest that one method of program design does not fit all populations and that exercise prescription should be targeted and not generalized.

scholarly journals Body Adiposity and Type 2 Diabetes: Increased Risk With a High Body Fat Percentage Even Having a Normal BMI

Obesity ◽  
2011 ◽  
Vol 19 (7) ◽  
pp. 1439-1444 ◽  
Author(s):  
Javier Gómez-Ambrosi ◽  
Camilo Silva ◽  
Juan C. Galofré ◽  
Javier Escalada ◽  
Silvia Santos ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Body Fat ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
High Body ◽  
Body Adiposity ◽  
Increased Risk

Body composition and the apoB/apoA-I ratio in migrant Asian Indians and white Caucasians in Canada

2006 ◽  
Vol 111 (3) ◽  
pp. 201-207 ◽  
Author(s):  
Jessica Smith ◽  
Katherine Cianflone ◽  
Maha Al-Amri ◽  
Allan Sniderman
Keyword(s):  
Body Composition ◽  
Vascular Disease ◽  
Body Fat ◽  
South Asians ◽  
Lipid Lowering ◽  
P Value ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Men And Women ◽  
Increased Risk

Migrant and native South Asians appear to be at increased risk of Type II diabetes mellitus and coronary disease. The aim of the present study was to determine the relationship between the most accurate summary index of the lipoprotein-related risk of vascular disease, the apoB (apolipoprotein B-100)/apoA-I (apolipoprotein A-I) ratio, and body composition in established migrant South Asians and white Caucasians living in Canada. Men and women living in Montreal, Canada between the ages of 20–60 years were recruited for participation in the study. Subjects were excluded if they had a history of cardiovascular disease or were taking lipid-lowering medication. Individuals identified themselves as Asian Indian or Caucasian. Anthropometric measurements were collected, including weight, height, waist circumference, hip circumference and body fat percentage. Plasma samples were analysed for total cholesterol, HDL-C (high-density lipoprotein-cholesterol), apoA-I and apoB. Indian subjects had a substantially higher WHR (waist-to-hip ratio) than Caucasian subjects [men, 0.93±0.01 compared with 0.86±0.01 respectively (P<0.001); women, 0.88±0.01 compared with 0.77±0.01 respectively (P<0.0001)]. WHR correlated strongly with body fat percentage in Caucasians (men, r=0.63, P=0.0002; women, r=0.74, P<0.0001). By contrast, there was no correlation in Indians (men, r=0.22, P value not significant; women, r=0.23, P value not significant). In addition, Indian men and women had a higher apoB/A-I ratio than Caucasians [men, 0.85±0.04 compared with 0.66±0.04 respectively (P=0.001); women, 0.73±0.04 compared with 0.56±0.03 respectively (P=0.0003)]. Of interest, there were also significant correlations between the apoB/apoA-I ratio and WHR in all of the groups, except the Indian women, which were stronger than the correlation of the apoB/apoA-I ratio with BMI. On the other hand, there was no significant relationship between the apoB/apoA-I ratio and the body fat percentage in any of the groups. In conclusion, the present study confirms that, as body fat percentage increases, the distribution of body fat differs between migrant Indians and Caucasians living in Canada. It also relates differences in body fat distribution to differences in the apoB/apoA-I ratio, providing at least part of the answer as to why South Asians may be at increased risk of vascular disease.

scholarly journals The Prevalence of Metabolic Syndrome Among Newly Diagnosed Malaysian Breast Cancer Patients

2018 ◽  
Vol 4 (Supplement 2) ◽  
pp. 120s-120s
Author(s):  
S.J. Kiew ◽  
T. Islam ◽  
N.A. Taib ◽  
H.A. Majid ◽  
Keyword(s):  
Breast Cancer ◽  
Metabolic Syndrome ◽  
Waist Circumference ◽  
Cancer Patients ◽  
Body Fat ◽  
Body Fat Percentage ◽  
Newly Diagnosed ◽  
Breast Cancer Patients ◽  
Fat Percentage ◽  
Increased Risk

Background: The incidence of breast cancer has increased in South East Asian (SEA) women. Malaysia has the highest obesity rates in SEA. Malaysian Breast Cancer Survivorship Cohort (MyBCC) study is a hospital-based prospective cohort study that aims to study the association between lifestyle factors and overall survival and quality of life of Malaysian breast cancer patients. Metabolic syndrome (MS) is associated with increasing levels of inflammatory cytokines and leptin that can stimulate cell proliferation through various mechanisms, hence indicating both an increased risk of developing breast cancer and a poorer prognosis. However, there is very scarce information available on the presence of MS among the newly diagnosed breast cancer patients. This is an early report of the presence of MS in the MyBCC study. Aim: We aim to evaluate the presence of MS among newly diagnosed breast cancer patients and to determine the association of MS and sociodemographic factors. Methods: 370 newly diagnosed breast cancer patients were interviewed at baseline. The anthropometric data (waist circumference, hip circumference, body weight, body height and body fat percentage) and also blood for lipid profile and glucose profile were collected. The MS status of the patients was defined using a modified International Diabetes Federation worldwide definition; presence of central obesity (waist circumference ≥ 80 cm) and any of two or more of the following criteria: (i) raised triglyceride with ≥ 1.7 mmol/L, (ii) reduced HDL-cholesterol that < 1.3 mmol/L, (iii) diagnosed with hypertension and (iv) diagnosed with diabetes. Results: Among the 370 breast cancer patients, most were aged 51 years and above (258, 69.7%), were Chinese (180, 48.6%), had secondary school education level (168, 45.4%), had less than RM3500 household income (193, 52.2%) and were postmenopausal (250, 67.6%). Most of the patients were obese or overweight (268, 72.4%) and around half of the patients (190, 51.4%) had high body fat percentage. 140 patients had MS (37.8%). MS was significantly higher among patients aged 61 years and above (59, 42.1%) and 51 to 60 years (50, 35.7%) compared with 20 to 50 years of age group (31, 22.1%) ( P < 0.05). The patients with MS were significantly higher among Chinese ethnicity (57, 40.7%), unemployed (95, 70.4%), and postmenopausal (108, 77.1%) ( P < 0.05). Conclusion: The prevalence of MS is high in newly diagnosed Malaysian breast cancer patients. With longer follow-up, further analysis will be done to look at association with outcomes.

scholarly journals The Relationship between “Shofuku-Fujin” (Abnormality of Abdominal Examination in Japanese Kampo Medicine) and Body Composition by Bioelectrical Impedance Analysis: A Cross-Sectional Study

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Tatsuya Ishige ◽  
Hiroshi Odaguchi ◽  
Toshihiko Hanawa
Keyword(s):  
Muscle Mass ◽  
Body Fat ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Cross Sectional Study ◽  
Body Fat Percentage ◽  
Lower Body ◽  
Sectional Study ◽  
Fat Percentage ◽  
Cross Sectional

Shofuku-fujin is an abnormal physical finding in Kampo medical practice. It is assumed to be often found in the elderly and contributes to the selection of Kampo formulas used mainly in elderly patients. However, few objective reports about Shofuku-fujin have been published to date. The aim of this study was to clarify the clinical features of patients showing Shofuku-fujin by using bioelectrical impedance analysis (BIA) and to objectively assess the potential clinical implications of these findings. We conducted a cross-sectional study of 1330 patients who visited our institute to undergo a medical examination by using data collected from September 2010 to March 2016. We extracted data on patient sex and age, anthropometric data, and body composition data that could potentially affect the appearance of Shofuku-fujin. Logistic regression analyses were performed by sex to analyze the various factors related to the appearance of Shofuku-fujin. Of the 1330 patients, the data of 386 men and 942 women were used for analysis. Multivariate logistic regression analysis showed that Shofuku-fujin was associated with older age (odds ratio (OR), 1.07; 95% confidence interval (CI), 1.05–1.10; p  < 0.001), lower skeletal muscle mass index (SMI) (OR, 0.60; 95% CI, 0.43–0.85; p  = 0.004), and lower body fat percentage (OR, 0.89; 95% CI, 0.85–0.93; p  < 0.001) in men and older age (OR, 1.06; 95% CI, 1.04–1.07, p  < 0.001) and lower body fat percentage (OR, 0.94; 95% CI, 0.92–0.96; p  < 0.001) in women. On the basis of these results, the factors causing the appearance of Shofuku-fujin were aging, decreased muscle mass, and decreased body fat in men and aging and decreased body fat in women. Our results demonstrated that it may be better to consider a loss of muscle mass when examining a male patient with Shofuku-fujin.

scholarly journals THE EFFECT OF LOW IMPACT AND MIXED IMPACT AEROBIC EXERCISES ON BODY FAT PERCENTAGE

2018 ◽  
Author(s):  
Umar
Keyword(s):  
Aerobic Exercise ◽  
Body Fat ◽  
Sampling Technique ◽  
Target Population ◽  
Excess Weight ◽  
Body Fat Percentage ◽  
Lower Body ◽  
Fat Percentage ◽  
Coaching Education ◽  
Group 2

This study aimed to determine the effect of aerobic exercise and a low mixed impact on lowering body fat percentage. It is based on problems that are often found in someone who is having difficulties to lose excess weight (overweight). As is known, the excess weight is usually caused by excess body fat, causing obesity. The target population of this research is the student of FIK UNP, while the student population is affordable UNP forces FIK Coaching Education 2010/2011. Study sample as many as 20 people were taken by purposive sampling technique. The treatment given to group 1 low impact aerobic exercises, while group 2 mixed impact aerobic exercise for 16 times the exercise. The instruments used to determine to what body fat percentage is Calculator-Aneka-Fitnes. The results showed: 1. Low impact aerobic exercise can lower body fat percentage (p = 0.005 &lt; α = 0.05 or thit = 3.667 &gt; ttab = 2.26), 2. Mixed impact aerobic exercise can lower body fat percentage (p = 0.000 &lt; α = 0.05 or thit = 7.423&gt; ttab = 2.26), 3. There is no difference between the effect of low impact aerobic exercises and the mixed impact of the decline in the percentage of body fat (p = 0.526 &gt; α = 0.05 or thit = 0.660 &lt; ttab = 2.036).

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