Maximum oxygen uptake and body composition of healthy Hong Kong Chinese adult men and women aged 20 – 64 years

Abstract

The aims of the present study were to assess the maximal oxygen uptake and body composition of adult Chinese men and women, and to determine how these variables relate to age. The cross-sectional sample consisted of 196 men and 221 women aged 20 – 64 years. Maximal oxygen uptake ([Vdot]O_2max) was determined by indirect calorimetry during a maximal exercise test on an electrically braked cycle ergometer. The correlations between [Vdot]O_2max and fat mass were ?0.52 in men and ?0.58 in women. Linear regression defined the cross-sectional age-related decline in [Vdot]O_2max as 0.35 ml · kg^?1 · min^?1 · year^?1 in men and 0.30 ml · kg^?1 · min^?1 · year^?1 in women. Multiple regression analysis showed that more than 50% of this cross-sectional decline in [Vdot]O_2max was due to fat mass, lean mass, and age. Adding fat mass and lean mass to the multiple regression models reduced the age regression mass from 0.35 to 0.24 ml · kg^?1 · min^?1 · year^?1 in men and from 0.30 to 0.15 ml · kg^?1 · min^?1 · year^?1 in women. We conclude that age, fat mass, and lean mass are independent determinants of maximal oxygen uptake in Chinese adults.     

Studying English with Thai and native‐speaking teachers

This research examined how students in foundation English classes perceive their Thai and native‐speaking teachers. The researchers surveyed students at five universities and compared a group of 600 students studying with native‐speaking teachers with another group of 600 students studying with Thai teachers in order to investigate three areas: (1) students’ previous background in English‐language learning, (2) students’ general opinions and preferences for studying English with Thai or native‐speaking teachers, and (3) student perceptions of studying with their current English teachers. Overall, most students had similar backgrounds and thought positively about their classroom teachers. However, there were differences in students’ teacher preferences for studying English; students more commonly preferred the type of teacher that was presently teaching them. This suggests that the type of teacher in the classroom does have some effect on students’ preferences and should be considered a factor when analysing research related to native‐speaking and nonnative‐speaking English teachers.