Karla P. Simmons

Changes in body weight, composition, and shape: a 4-year study of college students

The objectives of this study were to examine changes in body weight, body mass index (BMI), body composition, and shape in a group of male and female students over the 4-year college period. Anthropometric assessments including height and weight (via standard techniques), body composition (via bioelectrical impedance analysis), and body shape (via 3-dimensional body scanning) were conducted at the beginning of the freshman year and end of the senior year in 131 college students. Four-year changes included significant (p < 0.0001) gains in weight (3.0 kg), BMI (1.0 kg·m(-2)), body fat (3.6%), and absolute fat mass (3.2 kg). Males gained significantly (p < 0.0001) greater amounts of weight, BMI, percent and absolute fat mass, and fat-free mass than females. Weight change ranged from (-)8.7 to (+)16.8 kg. About 70% of the participants gained weight, which averaged 5.3 kg; significant (p < 0.0001) gains in BMI, fat-free mass, absolute fat mass, and percent body fat and significant (p < 0.0005) increases in neck, chest-bust, waist, hips, seat, and biceps circumferences were also observed in this weight gain group. The percentage of participants classified as overweight-obese increased from 18% to 31%. The number of females and males with ≥30% and 20% body fat, respectively, increased from n = 14 to n = 26 (with n = 4 exhibiting normal weight obesity) over the 4-year period. The waist circumference changes were significantly (p < 0.0001) correlated with both weight and percent body fat changes. In conclusion, the increasing prevalence of obesity and normal weight obesity among this college population suggests the need for additional health promotion strategies on college campuses.

The Freshman 15—A Closer Look

Abstract Objectives and Participants: Changes in body weight, composition, and size were examined in college freshmen at the beginning (initial, n = 240) and end of fall semester 2007 (n = 214) and the end of spring semester 2008 (n = 205). Methods: Height, weight, body composition, and waist and hip measurements were assessed. Results: Mean weight, body mass index (BMI), absolute and percent body fat all increased significantly over fall semester and the academic year. About 31% of freshmen lost ≥5 lbs. Mean academic year weight gain was 2.6 lbs (entire group) and 6.0 lbs (weight gainers); body fat increased by 4.4 lbs in the weight gainers. A significant correlation (r = .509) was found between weight change and waist circumference change, but not between weight change and waist to hip ratio change. Conclusions: Freshmen weight gain is associated with increases in body fat and waist circumference, which may be troublesome should the trend continue throughout college.

Weight and Body Composition Changes during the First Three Years of College

Differences in weight, body mass index (BMI), percent and absolute body fat, fat-free mass, and waist circumference were investigated in a group of males and females during the first three years (from 2007 to 2010) of college. Significant three-year gains were observed for weight 2.1 ± 4.7 kg, BMI 0.7 ± 1.6 kg/m2, percent body fat 2.7 ± 3.3%, and fat mass 2.3 ± 3.5 kg. A significant loss of fat-free mass, −0.5 kg, was observed among females. Absolute gains in weight, BMI, and percent and absolute body fat were highest during the freshman year, followed by the junior year, and lowest during the sophomore year. Among the 70% of students gaining weight over the three years, weight gain averaged 4.3 kg. The numbers of females with over 30% body fat doubled, and the number of males with over 20% body fat increased fivefold. Initially 15% of students were classified as obese/overweight and 79% normal weight; by the end of the junior year, 24% were obese/overweight and 70% were normal weight. Efforts on college campuses to promote healthy lifestyles among its student population are needed throughout the college years.

Body composition changes during the first two years of university

OBJECTIVE Changes in body weight, composition, and shape were investigated in male and female college students between the freshman and sophomore years. METHODS Changes in weight, body mass index (BMI), percent and absolute body fat and fat-free mass (via bioelectrical impedance), and waist circumference (via body scans) were assessed over the freshman and sophomore years (2007-2009) among 120 students attending a Southern public university. RESULTS Weight (2.5 and 1.7 lbs) and BMI gains (0.3 and 0.3 kg/m(2)) did not significantly differ between the freshman and sophomore years, respectively. Significantly more percent body fat and fat mass were gained during the freshman (1.9% and 3.3 lbs, respectively) than the sophomore year (0.0% and 0.6 lbs, respectively). Females lost significantly more fat-free mass during the freshman (-0.8 lb) than during the sophomore year (1.0 lb). Changes in waist circumference and weight were significantly correlated. Increases in the percentages of females classified as overweight and with unhealthy body fat amounts and waist circumferences were observed. CONCLUSION While the sophomore year was characterized by slightly healthier body composition changes than the freshman year, the gains in weight, fat mass, and waist circumference measurements suggest increased health risks for many college females.

Age, Body Size, Body Image, and Fit Preferences of Male Consumers

This study examines the influence of specific physical factors (body size), demographic factors (age), and psychosocial factors (body satisfaction, social physique anxiety, and drive for muscularity) on apparel-specific (jeans, khakis, dress shirts, and polo shirts) fit preferences of male consumers. Data were collected through an online survey administered to 141 men in the age group of 19-66 years. Results revealed that increase in body size significantly predicted preferences for apparel (jeans, dress, and polo shirts) with looser fits, and jeans with higher waistlines. Increase in age also predicted preferences for dress and polo shirts with looser fits and jeans with higher waists. With respect to the body-image-related factors, increase in body dissatisfaction predicted increased preferences for dress shirts with looser fits and khakis with higher waistlines. Contrary to expectations, increase in mens drive for muscularity predicted preferences for jeans with lower waistlines. This study offers important implications and creates actionable market information on fit strategy for male consumer segments.

Associations among eating regulation and body mass index, weight, and body fat in college students: The moderating role of gender

This study investigated associations between eating regulation behaviors and body mass index (BMI), weight, and percent body fat in male and female students over the first two years of college. Subjects included 328 college students (215 females and 113 males). Height and weight (via standard techniques), body composition (via bioelectrical impedance analysis), and eating regulation behaviors (using the Regulation of Eating Behavior Scale) were conducted two to three times during both the freshman and sophomore years. Significant associations between eating regulation and BMI, weight, and/or percent body fat were shown mostly in females. In females, higher BMI, weight, and/or percent body fat at the end of the second year of college were found in those with low levels of autonomous, intrinsic motivation, and identified regulation, and high levels of amotivation, while lower BMI, weight, and/or percent body fat were associated with high levels of autonomous, intrinsic motivation, and identified regulation, and low levels of amotivation. The findings that specific eating behaviors in females during the first two years of college influence BMI, weight, and/or percent body fat may be useful for inclusion in university programs focused on college student health to help decrease the risk of obesity and disordered eating/eating disorders in female college students.

Summer Doesn't Reverse Freshman Year Body Weight and Fat Gains in Female College Students

College students, especially females, gain weight their freshman year. Yet, what happens after this first year? This studys purposes were to compare changes and rates of change in weight, body mass index (BMI), body composition (percent body fat, fat mass, fat free mass) and waist circumference between the freshman academic year and the following summer among female college students. Summer weight change also was compared between those who gained versus those who lost weight over the academic year. Participants included 237 females recruited at the beginning of the fresh- man year. Height and weight were measured using standard anthropometric techniques. Body composition was measured using bioelectrical impedance analysis; waist circumference was measured using a body scanner. Assessments were per- formed during the freshman (beginning and end) and sophomore (beginning) years. Weight gain for the 237 females dur- ing the academic year was 1.4 kg with an average 0.1 kg loss over the summer. Rates of change and increases in weight, BMI, body composition, and waist circumference were significantly higher over the academic year than the summer. When only those 162 participants who gained weight over the academic year were considered, academic year weight gain averaged 2.8 + 2.3 kg, but only -0.3 + 1.7 kg were lost over the summer. Weight change was significantly correlated with waist circumference change. Weight gained by college freshmen over the academic year was not lost over the summer. Weight gain was accompanied by unhealthy gains in percent body fat, fat mass, and waist circumference.

The impact of physical activity on body weight and fat gains during the first 3 years of college

Over two-thirds of students gain weight and body fat during college, especially during the freshman year. This study examined whether participation in physical activity during the first 3 years of college was associated with favorable changes in body weight and percent body fat. Participants included 535 college students (345 females, 190 males). Height and weight (assessed by standard techniques) and body fat (assessed by bioelectrical impedance analysis) were obtained at the beginning of fall semester and at the end of spring semester of each year; in addition during the first 2 years, assessments were also conducted at the end of fall semester for a total of eight assessments between 2007 and 2010. Physical activity participation was self-reported using a questionnaire that included a subset of questions from the National College Health Risk Behavior Survey. While both males and females exhibited significant increases in weight and percent body fat over the 3-year period; for the females, participation in strength training was associated with loss of weight and percent body fat. The results of this study emphasize the benefits of physical activity, especially strength training, for college females as a means to reduce or prevent body weight and fat gains during the first 3 years of college.