Tracking weight change,insulin resistance,stress, and aerobic fitness over 4 years of college

Objective: To determine if weight gain is accompanied by development of insulin resistance (IR) during 4 years in college. Participants: Two cohorts of college students were enrolled in fall semesters 2009 and 2010 and tracked for 4 years. Methods: Following a 12-hour fast, subjects reported for measurement of body mass index (BMI), perceived stress (PSS), aerobic fitness, and blood glucose, insulin, and lipids. Results: In the first year, 33% of subjects were overweight or obese, and 20% were hyperinsulinemic. Year 4 had 29 remaining subjects with disproportionate attrition of overweight and obese individuals. Just over half the subjects gained weight (WI), whereas nearly 30% lost considerable amounts (WD). WD showed significant decline in fasting insulin, low-density lipoprotein (LDL) cholesterol, and PSS from year 1. WI was primarily highly fit men who did not demonstrate increased IR. Conclusion: WI was not associated with IR over 4 years of college.     

Fitness Profiles and Activity Patterns of Entering College Students

Abstract

Fitness levels of American youth have shown a marked decline in the last decade, according to recent studies. To determine whether such a tendency persists for entering college students, the authors evaluated 115 male and 143 female students for performance on the following fitness-related variables: (1) maximal oxygen consumption (estimated from Astrand cycling protocol), (2) body composition (skin-fold techniques), (3) muscle endurance (sit-up protocol), (4) muscle strength (bench-press protocol), and (5) joint flexibility (upper and lower body protocols).

Although neither men nor women exhibited high levels of cardiorespiratory fitness, the women in the study showed higher relative levels than their male counterparts. Both groups showed excellent levels of muscle strength (compared with normative standards), but they achieved only an average standard for muscle endurance. Findings of relatively low levels of cardiovascular fitness compared with levels of muscle strength, particularly in men, seem to be a reflection of an inappropriate concentration of physical activity.     

An Evaluation of Physical Fitness Parameters for Graduate Students

Abstract

Although graduate physical therapy students are taught the principles of fitness for incorporation into their professional lives, they have difficulty finding the time to implement these principles during graduate school. The authors studied 3 successive classes of graduate physical therapy students at the beginning and ending of their respective programs. They found that the women's percentages of body fat were significantly greater over the period of the study. The men's lower extremity strength decreased at the slower speeds (60 degrees/second), and the women showed increased strength at the higher speeds (180 and 240 degrees/second, respectively). Male grip strength significantly increased over the period of the study. To decrease students' percentages of body fat and increase their strength, the authors asserted that physical therapy students should be allowed more time to participate in fitness activities during their graduate school years.     

Peer 2 Peer: Efficacy of a Course-Based Peer Education Intervention to Increase Physical Activity Among College Students

Abstract

There are few physical activity (PA) interventions in higher education, and they have been only minimally effective. Objective: To determine if a course-based, peer education intervention was associated with increases in PA and physical fitness. Participants: Participants were 178 students enrolled in a personal health class during the 2007–2008 academic year. Methods: A quasi-experimental design was used to assess the effect of the intervention. Repeated measures analysis of covariance was employed to test the impact of the intervention on students’ PA, body composition, waist-to-hip ratio, cardiovascular fitness, flexibility, and muscular strength. Results: Women in the treatment group classified as “Inactive” at baseline increased PA, whereas “Inactive” control women had reductions in PA. Women in the treatment group who were “Active” at baseline reduced their waist-to-hip ratio and increased flexibility. There were no differences by treatment group among men. Conclusions: The intervention was effective in improving PA and physical fitness among college women.     

Evaluation of sex hormone levels and some metabolic factors in men with coronary atherosclerosis

Background Because of the great controversy over the role of androgens in the pathogenesis of atherosclerosis, we investigated the relationship between serum sex hormone levels and angiographically confirmed coronary artery disease in men.

Material and methods We investigated 86 men aged 40–60 years, 56 with coronary artery disease and 30 healthy men, matched by age, as a control group. Body mass index and waist to hip ratio were calculated and total body fat mass and percentage of abdominal deposit were investigated by dual-energy X-ray absorptiometry (Dpx (?+?) Lunar, USA). The serum levels of sex hormones and insulin were measured using commercial radioimmunoassay and IRMA (by SHBG) kits (DPC, USA). The serum levels of lipids and glucose were assessed by means of enzymatic methods.

Results Men with coronary artery disease had lower total testosterone levels (17.01?±?6.42 vs. 19.37?±?6.58?nmol/l; p?<?0.05), testosterone/estradiol ratio (228.5?±?88.5 vs. 289.8?±?120.1; p?<?0.05) and free androgen index (FAI) (59.49?±?14.79 vs. 83.03?±?25.81; p?<?0.0001), and higher levels of estrone (49.5?±?27.7 vs. 36.6?±?12.7?pg/ml) than men in the control group. Moreover, men with coronary artery disease were more insulin-resistant than controls and had an atherogenic lipid profile. There was an inverse correlation (p?<?0.05) between testosterone level and serum level of glucose (r?=??0.29), triglycerides (r?=??0.37), body mass index (r?=??0.55), waist (r?=??0.43), total body fat mass (r?=??0.3) and fasting insulin resistance index. A significant positive association (p?<?0.05) was found between testosterone and the quantitative insulin sensitivity check index and high density lipoprotein cholesterol level in serum (r?=?0.26).

Conclusions Low levels of total testosterone, testosterone/estradiol ratio and free androgen index and higher levels of estrone in men with coronary artery disease appear together with many features of metabolic syndrome and may be involved in the pathogenesis of coronary atherosclerosis.     

Attention-deficit hyperactivity disorder symptomatology,binge eating disorder symptomatology,and body mass index among college students

Abstract

Objective: To explore the relationship between symptoms of attention-deficit hyperactivity disorder (ADHD), symptoms of binge eating disorder, and body mass index (BMI) among students at a southern university. Participants: Two hundred seventy-seven college students. Methods: Between January 31, 2013 and March 27, 2013, participants completed the Adult ADHD Self-Report Scale (ASRS) Screener and the Binge Eating Scale (BES) in addition to permitting researchers to measure their height and weight. Results: Higher ASRS scores, higher BMIs, and lower BES scores were observed among men. Among both men and women, BES scores were positively correlated with BMI and ASRS scores; however, the correlation between ASRS and BMI was not significant. Conclusion: Binge eating disorder symptomatology was associated with increased ADHD symptomatology and a higher BMI among both men and women. Among students presenting with obesity or ADHD, screening for binge eating may assist with the identification of problematic eating behaviors.     

The association between physical fitness and physical activity among Chinese college students

Abstract

Objective: The constant deterioration of the physical fitness of college students has been a popular topic in China, thus this research analyzes the potential health risk of inadequate physical activity among college students. Participants/methods: During the national student fitness test (NSFT) in 2012, 1500 students from Tsinghua University were recruited and asked to complete the international physical activity questionnaire. Finally, 1414 (94.3%) students completed the study. Results/conclusions: Compared with those students who actively participate in exercise, the risk of obesity in college students lacking exercise was 1.25 times higher. Likewise, the probability of failure in the grip strength test and the standing long jump was also higher, with increases of 2.39 fold and 1.39 fold, respectively. Moreover, the total score of physical fitness test was the same. Consequently, this study suggests that college students should exercise regularly to increase their physical fitness.     

Cross-national comparisons of college students' attitudes toward diet/fitness apps on smartphones

Objective: Based on the technology acceptance model (TAM), we explored the nationally-bounded roles of four predictors (subjective norms, entertainment, recordability, and networkability) in determining the TAM variables of perceived usefulness (PU), perceived ease of use (PEOU), and behavioral intention (BI) to use diet/fitness apps on smartphones. Participants/methods: College students in the US and South Korea were invited to participate in a survey. We obtained 508 questionnaires (304 from the US and 204 from Korea). Data were analyzed mainly through path analysis. Results: The four factors positively predicted the PU and PEOU of diet/fitness apps. While the effects of the predictors on the three TAM components were generally stronger among the US students than Korean students, the effect of subjective norms on the BI of diet/fitness apps was weaker among Korean students. Conclusion: Findings from the cross-national comparisons were helpful for thoroughly understanding the contextualized mechanisms involved in the adoption of diet/fitness apps.     

Senility,illness and death in Açvaghosa's ‘Buddhacări˘ta’The Feats of Buddha

Background An age-related decline in growth hormone (GH) level has been established, and this decline is associated with changes in body composition as well as a general increase in susceptibility to illness and a reduced sense of well-being. The current study, a first in Asia, sought to examine the effects of GH therapy on body composition and other endocrine and metabolic functions in a group of healthy elderly Chinese men.

Methods A total of 23 healthy elderly Chinese men, aged between 60 and 69 years, were injected subcutaneously, three times weekly, with 0.08 U/kg of recombinant GH for 6 months. Various hormones and biochemical parameters, together with percentage lean body mass and body fat, were measured before, 3 and 6 months after the start and 3 months after the cessation of GH therapy.

Results A significant increase in lean body mass, up to 9.1% over baseline values at 3 months post-therapy, and a significant decrease in body fat, up to 3.1%, were noted. GH therapy also induced variable and significant increases in levels of insulin growth factor (IGF-I), dehydroepiandrosterone sulfate (DHEAS), insulin, triiodothyronine (T3), thyroxine (T4), thyroid stimulating hormone (TSH) and triglyceride and significant reductions in glucose and sex hormone binding globulin (SHBG) levels. No changes in testosterone, free androgen index and cholesterol were noted. A significant and independent correlation was noted between IGF-I and insulin, TSH, DHEAS, glucose and triglyceride levels.

Conclusions GH augmentation therapy was effective in improving the body composition of a group of elderly Chinese men. GH-induced positive changes in body composition in the elderly were probably a result of the direct effect of the GH. It is also possible that some of the changes were mediated through GH-induced changes in thyroid hormones, insulin, glucose, triglyceride and DHEAS. However, the mechanism of GH- induced changes in body composition remains to be defined.     

Eating Disorder Risk and Body Dissatisfaction Based on Muscularity and Body Fat in Male University Students

Abstract

Objective: To investigate the relationship between risk of eating disorders, body dissatisfaction, and perceptual attractiveness in male university students. Participants: Research was conducted January–April 2012 and involved 339 male and 441 female students. Methods: Eating disorder risk was assessed with the Eating Attitudes Test (EAT) and body dissatisfaction and perceptual attractiveness determined with the Bodybuilder Image Grid (BIG). Results: There was a positive correlation (r = .16, p < .01) between the EAT and fat dissatisfaction and a negative correlation (r = ?.14, p < .05) for muscle dissatisfaction, 28% of the males had an EAT score indicating that they were at risk for an eating disorder. Males chose a significantly more muscular and leaner body type than what females chose to be attractive. Conclusion: College-aged males may be at risk for eating disorders based on distortions in their perceived ideal body image, both for fat and muscle.     

Changes in type 1 diabetes health indicators from high school to college

ABSTRACT

Objective: Evaluate trajectories of type 1 diabetes health indicators from high school through the first year of college. Participants: Seventy-four students with type 1 diabetes who maintained pediatric endocrinology care during the first year of college. Methods: Hemoglobin A_1c (HbA1c), blood glucose monitoring frequency, body mass index (BMI), and clinic attendance data were collected via retrospective medical chart review in spring 2012. Group-based trajectory models evaluated diabetes-related health indicators over time and identified distinct growth trajectory groups. Results: BMI increased and clinic attendance decreased in the first year of college. Trajectories for other health indicators were heterogeneous and stable over time; 69% of students were classified as having stable good glycemic control. Racial minority youth and youth on conventional insulin regimens were disproportionally represented in higher-risk groups. Conclusions: Diabetes health indicators are stable or decline upon college entrance. Results signal the need for targeted support for college students with type 1 diabetes.     

One Size Doesn't Fit All: New Continua of Figure Drawings and Their Relation to Ideal Body Image

Abstract

Objective: This study introduces a new figure drawing measure, the Presentation of Images on a Continuum Scale (PICS), which includes continua of bodies from thin to obese and thin to muscular for both men and women. Participants: Participants were undergraduate students from a private, Catholic university in Connecticut. The data were collected in the spring of 2010. Methods: Three hundred forty-eight undergraduates completed an online survey that assessed current versus ideal body image as well as attractiveness of body types. Results: Results showed that current versus ideal body selection discrepancies on the PICS among women (but not among men) were related to several negative outcomes involving increased body concerns, less body satisfaction, and lower self-esteem, as well as increased drive for muscularity among men. Study implications are described from a social norming perspective.     

Environmental Health and Safety Philosophy

Abstract

Objective: This study examines ethnic identity and body image in black and white college females. Participants: Researchers surveyed 118 students at 2 universities, 1 traditionally white and 1 historically black. Methods: Correlations and multivariate analysis of variance (MANOVA) were used to investigate the relationship between race, ethnic identity, and body dissatisfaction. Results: There was no relationship between a woman's ethnic identity and her body dissatisfaction. Although white women scored higher on body dissatisfaction measures, women in both groups who had higher body dissatisfaction scores also choose smaller ideal body types. Results suggest that identification with an ethnic group may not shield women from being dissatisfied with their bodies. Conclusion: Colleges and universities should be aware that many women could experience body dissatisfaction and develop diverse programs that target women from different ethnic groups.     

Everyday Health Communication Experiences of College Students

Objective: The authors examined college students' day-to-day health communication experiences. Participants: A convenience sample of 109 midwestern university students participated in the study. Methods: The participants completed health communication diaries for 2 weeks, generating 2,185 records. Frequent health topics included nutrition and diet, minor health concerns, risky health practices, and body fitness. Results: Approximately 27% of health communication experiences involved the proactive seeking of health-related information or advice. Interpersonal venues (face-to-face, telephone, and e-mail) were evident in about 75% of the records, which were dominated by exchanges with friends and family members. The authors found modest interactions of topic, channel, and purpose. Conclusions: Congruent with the uses and gratifications theory, the authors found that satisfaction with and perceived impact of health communication experiences varied by topic, channel, relationship, and purpose.     

Impediments to Academic Performance of Bisexual College Students

Abstract

Objective: To investigate health-related impediments to academic success for bisexual college students. Participants: Respondents to the Fall 2011 American College Health Association–National College Health Assessment II (ACHA-NCHA II) survey who self-identified as bisexual, heterosexual, gay, or lesbian. Methods: Secondary analyses of the ACHA-NCHA II data were conducted to compare the experiences of bisexual students with both each other (bisexual men and bisexual women) and those of their nonbisexual counterparts (heterosexual and gay/lesbian students). Results: Bisexual college students are a large and distinct sexual minority group. On all measures with the exception of discrimination, bisexual college students reported the strongest threats to academic success of all sexual orientations. Conclusions: Given the unique impediments for bisexual students, college health professionals should consider specifically addressing needs for bisexual students, bisexual women in particular.     

Pilot Testing a Cognitive-Behavioral Protocol on Psychosocial Predictors of Exercise,Nutrition, Weight,and Body Satisfaction Changes in a College-Level Health-Related Fitness Course

Abstract

Objective: Small-scale pilot testing of supplementing a required college health-related fitness course with a cognitive-behavioral exercise-support protocol (The Coach Approach). Participants: Three classes were randomly assigned to Usual processes (n = 32), Coach Approach–supplemented: Mid-size Groups (n = 32), and Coach Approach–supplemented: Small Groups (n = 34) conditions. Methods: Repeated-measures analyses of variance (ANOVAs) assessed overall and between-class changes in the behavioral/physiological factors of exercise, fruit/vegetable intake, and body mass index (BMI); and the psychosocial factors of self-regulation, exercise self-efficacy, mood, and body satisfaction. Dependent t tests evaluated within-class changes. Multiple regression analyses tested prediction of exercise by changes in self-regulation, self-efficacy, and mood. Results: Significant improvements in self-regulation and fruit/vegetable intake were found in all classes. The Coach Approach–supplemented classes demonstrated significant increases in exercise. Significant improvements in BMI, self-efficacy, and body satisfaction were found in only The Coach Approach–supplemented: Small Groups class. Psychosocial changes predicted increased exercise. Self-regulation was the strongest contributor. Conclusions: Overall, results were positive and warrant more comprehensive testing.     

College Health Service and the Fast-Food Value System

Abstract

Objective: To estimate and compare the prevalence of overweight and obesity among self-identified lesbian, bisexual, and heterosexual college age women. Methods: A secondary analysis of the Spring 2006 National College Health Assessment was conducted with 31,500 female college students (aged 18 to 25 years) to compare body mass index (calculated from self-reported height and weight) among lesbian, bisexual and heterosexual college women. Results: Compared to heterosexuals female college students, lesbians and bisexual women were both significantly more likely to be overweight or obese. Lesbians were also less likely to be underweight compared to heterosexual college women. Conclusions: Self-identified lesbian and bisexual college women were more likely to be overweight or obese than their heterosexual counterparts. Health care professionals and educators should target these high-risk populations for obesity prevention programs. This study highlights the need for additional research examining the potential risk factors for overweight and obesity among young sexual minority women.     

Testosterone deficiency and the metabolic syndrome

Evidence is presented to link components of the metabolic syndrome to testosterone deficiency and obesity. Testosterone deficiency in hypogonadism or testosterone deprivation in normo-gonadotropic men increases fat mass as well as fasting insulin levels. Testosterone supplementation (TS) in a dose dependent manner, increase lean body mass (LBM), reduces fat mass, body mass index (BMI) and waist hip ratio in both young and elderly hypogonadal men. A negative association between T and insulin resistance as well as impaired glucose intolerance has been demonstrated and in type 2 diabetic men TS improves metabolic parameters. TS improves most components of the metabolic syndrome and also reduces inflammatory cytokines.     

Leptin as a marker of body fat and hyperinsulinemia in college students

Little is known about obesity and insulin resistance in college students. Leptin is a hormone secreted by fat cells and has been shown to strongly correlate with both obesity and insulin resistance in children and adults. We investigated associations of leptin with insulin secretion and action in 119 normal-weight students aged 18-24 years. Leptin was strongly correlated with total fat mass (r = .67, p <.001), percentage body fat (r= .81, p < .001), and to a lesser degree Body Mass Index, or BMI, (r = .23, p < .02). Leptin was associated with fasting insulin (beta+/-SE = 0.30+/-0.06, p < .001) and insulin resistance (beta+/-SE = 0.41+/-0.20, p < .001) independent of total fat, gender, and age, suggesting other mechanisms of leptin and insulin regulation besides obesity. Leptin resistance is present even among young and normal-weight college students. Leptin, even more so than BMI, is an important marker of adiposity and hyperinsulinemia in normal-weight college students and may potentially be used to predict type 2 diabetes.     

Inverse association of testosterone and sex hormone binding globulin levels with leukocyte count in middle-aged and elderly men

Objective: The inverse associations of testosterone and sex hormone-binding globulin (SHBG) levels with cardiometabolic diseases are well established and are increasingly viewed as inflammatory diseases. This study aimed to examine the associations of testosterone and SHBG levels with leukocyte count in 451 Korean men aged ≥50 years.

Methods: Serum testosterone and SHBG levels were categorized into tertiles. High leukocyte count was defined as ≥7340 cells/μl, which corresponded to the 75th percentile of the current sample. The odds ratios (ORs) and 95% confidence intervals (95% CIs) for high leukocyte count were calculated across testosterone and SHBG tertiles using multiple logistic regression analysis.

Results: The mean leukocyte counts significantly decreased with increasing testosterone and SHBG tertiles. The ORs (95% CIs) of high leukocyte count for the first tertile of testosterone and SHBG were 3.27 (1.34–7.95) and 2.38 (1.05–5.96), respectively, compared with the referent third tertile, after adjusting for age, smoking status, alcohol drinking, regular exercise, body mass index, blood pressure, fasting plasma glucose, triglyceride, and high-density lipoprotein (HDL) cholesterol level.

Conclusion: We found inversely graded associations of low testosterone and SHBG levels with leukocyte count. These findings suggest that low testosterone and SHBG levels may be interpreted as a state of low-grade inflammation.