Effects of resistance training on cardiovascular health in non-obese active adolescents.
OBJECTIVE
To determine the benefits of a 10-wk resistance training programme on cardiovascular health in non-obese and active adolescents.


METHODS
This is a pragmatic randomised controlled intervention. The study was carried out in a Hong Kong Government secondary school. Thirty-eight lean and active boys and girls were randomised to either the resistance training group or the control group. Students in the resistance training group received in-school 10-wk supervised resistance training twice per week, with each session lasting 70 min. Main outcome measures taken before and after training included brachial endothelial dependent flow-mediated dilation, body composition, fasting serum lipids, fasting glucose and insulin, high sensitive C-reactive protein, 24-h ambulatory blood pressure and aerobic fitness.


RESULTS
The only training related change was in endothelial dependent flow-mediated dilation which increased from 8.5% to 9.8%. A main effect of time and an interaction (P < 0.005) indicated that this improvement was a result of the 10-wk resistance training. Main effects for time (P < 0.05) in a number of anthropometric, metabolic and vascular variables were noted; however, there were no significant interactions indicating the change was more likely an outcome of normal growth and development as opposed to a training effect.


CONCLUSIONS
Ten weeks of resistance training in school appears to have some vascular benefit in active, lean children.
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Clare Chung-Wah
CC
Yu
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Alison Mary
AM
McManus
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Hung-Kwan
HK
So
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Ping
P
Chook
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Chun-Ting
CT
Au
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Albert Martin
AM
Li
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Jack Tat-Chi
JT
Kam
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Raymond Chi-Hung
RC
So
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Christopher Wai-Kei
CW
Lam
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Iris Hiu-Shuen
IH
Chan
Clare Chung-Wah Yu, Department of Health and Physical Education, the Education University of Hong Kong, Hong Kong, China.
Rita Yn-Tz
RY
Sung
24-h ambulatory blood pressure; Aerobic fitness; Cardiometabolic risk factors; Children; Endothelial function; High sensitive C-reactive protein; School-based training program; Strength training