[Energy expenditure in reading and watching TV studied on 30 young females].
OBJECTIVE
To measure the energy expenditure of reading and watching TV for young women.


METHODS
All 30 girls in the college were selected according to questionnaire, medical examination, blood test, liver function and thyroid gland level. Energy expenditure of reading and watching TV was measured respectively by the Cosmid K4b2 portable gas analysis system from Italy. Basic metabolic rate (BMR) and resting metabolic rate (RMR) were measured as to analyzing results conveniently.


RESULTS
The energy expenditure in reading was (226.35 +/- 56.07) kJ/h and the heart rate was (69 +/- 5) bmp. For watching TV it was (220.79 +/- 65.69) kJ/h and the heart rate was (68 +/- 5) bmp. BMR was (178.53 +/- 53.51) kJ/h and the heart rate was (62 +/- 6) bmp. RMR was (214.76 +/- 44.56) kJ/h and the heart rate was (65 +/- 6) bpm.


CONCLUSIONS
The energy expenditure in reading should be higher than that of watching TV, however, the difference was not obvious. The expenditure rates might get closer to those of RMR. It might be regarded as an expenditure of very light physical active in Chinese.
Sun
Rui
R
Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
Piao
Jian-Hua
JH
Tian
Yuan
Y
Li
Wei-Dong
WD
Liu
Jian-Min
JM
Tian
Ying
Y
Li
Min
M
Dong
Jie
J
Gou
Ling-You
LY
Yang
Xiao-Guang
XG
D000293:Adolescent; D000328:Adult; D001481:Basal Metabolism; D005260:Female; D006801:Humans; D011932:Reading; D012146:Rest / Q000502:physiology*; D013690:Television