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Kim, Yoon-Myung (2010) ROLE OF REGULAR EXERCISE IN THE TREATMENT OF ABDOMINAL OBESITY IN ADOLESCENT BOYS. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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BACKGROUD: Abdominal obesity is a strong risk factor for cardiovascular disease (CVD) and insulin resistance. Currently, the role of regular exercise alone in the treatment of abdominal obesity is unknown in adolescent boys.OBJECTIVE: The aim of this study was to examine the effect of a 3-month regular exercise alone without calorie restriction on total and abdominal adiposity in overweight adolescent boys. More specifically, the effects of different types of exercise training (aerobic vs. resistance exercise) on total fat, and visceral adipose tissue (VAT) and abdominal subcutaneous adipose tissue (ASAT) were compared.STUDY DESIGN & METHODS: Thirty overweight adolescent boys (BMI ≥ 95th percentile, 12-18 years, Tanner stage III-V) were randomly assigned to one of three intervention groups: aerobic training (AE, n = 10, 60 min/session, 3 days/week), resistance training (RE, n = 13, 60 min/session, 3 days/week) and no-exercise control group (n = 7). Outcome measurements included waist circumference (WC), total body fat, abdominal AT (VAT and ASAT), cardiorespiratory fitness (CRF) and muscular strength.RESULTS: Body weight and BMI did not change in both exercise groups (P > 0.1), but significantly (P < 0.05) increased in the control group. Compared with the control group, a significant (P < 0.05) reduction in total fat(kg) was observed in both AE (-2.3 kg) and RE groups (-1.4 kg). Both VAT (kg) and ASAT (kg) were significantly (P < 0.05) reduced in the AE (-9.7% and -6.5%, respectively) and RE groups (-14.5% and -5.2%, respectively). By contrast, both VAT (17.0%) and ASAT (6.2%) were significantly (P < 0.05) increased in the control group. Compared with the control group, a significant (P < 0.05) improvement in CRF was observed in both exercise groups, and the improvement was greater (P < 0.05) in the AE (36.5%) vs. RE (25.8%) groups. Upper and lower body muscular strength were significantly (P < 0.01) increased in the RE group (> 30% and 43-50%, respectively) compared with the AE and control groups.CONCLUSIONS: Regular exercise without calorie restriction, independent of exercise modality, is associated with significant reductions in total and abdominal adiposity and improvements in CRF and muscular strength in previously sedentary overweight adolescent boys.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairJakicic, John Mjjakicic@pitt.eduJJAKICIC
Committee MemberOtto, Amy Dayotto@pitt.eduAYOTTO
Committee MemberRobertson, Robert Jrrboert@pitt.eduRRBOERT
Committee MemberLee, SoJungSoJung.Lee@chp.eduSOL11
Date: 20 September 2010
Date Type: Completion
Defense Date: 14 July 2010
Approval Date: 20 September 2010
Submission Date: 23 July 2010
Access Restriction: 5 year -- Restrict access to University of Pittsburgh for a period of 5 years.
Institution: University of Pittsburgh
Schools and Programs: School of Education > Health, Physical, Recreational Education
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: abdominal obesity; adolescents; cardiorespiratory fitness; exercise; muscular strength; subcutaneous adipose tissue; visceral adipose tissue
Other ID:, etd-07232010-102742
Date Deposited: 10 Nov 2011 19:53
Last Modified: 19 Dec 2016 14:36


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