Comparison of ventilatory threshold and exercise habits between Japanese men with and without metabolic syndrome

Miyatake, Nobuyuki; Saito, Takeshi; Wada, Jun; Miyachi, Motohiko; Tabata, Izumi; Matsumoto, Sumiko; Nishikawa, Hidetaka; Makino, Hirofumi; Numata, Takeyuki

doi:10.1016/j.diabres.2006.11.008

« Previous Next »Diabetes Research and Clinical Practice
Volume 77, Issue 2 , Pages 314-319, August 2007

Comparison of ventilatory threshold and exercise habits between Japanese men with and without metabolic syndrome

Nobuyuki Miyatake
- Okayama Southern Institute of Health, 408-1 Hirata, Okayama 700-0952, Japan
- Corresponding author. Tel.: +81 86 246 6250; fax: +81 86 246 6331.
Takeshi Saito
- Okayama Southern Institute of Health, 408-1 Hirata, Okayama 700-0952, Japan
Jun Wada
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
Motohiko Miyachi
- National Institute of Health and Nutrition, Shinjuku, Tokyo, Japan
Izumi Tabata
- National Institute of Health and Nutrition, Shinjuku, Tokyo, Japan
Sumiko Matsumoto
- Okayama Southern Institute of Health, 408-1 Hirata, Okayama 700-0952, Japan
Hidetaka Nishikawa
- Okayama Southern Institute of Health, 408-1 Hirata, Okayama 700-0952, Japan
Hirofumi Makino
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
Takeyuki Numata
- Okayama Southern Institute of Health, 408-1 Hirata, Okayama 700-0952, Japan

Received 3 August 2006; received in revised form 19 October 2006; accepted 7 November 2006. published online 05 January 2007.

Abstract

Objective

We compared the levels of ventilatory threshold (VT) and exercise habits in subjects with metabolic syndrome with those in age, sex-matched subjects without metabolic syndrome.

Methods

We used data of 155 Japanese men (47.1±9.2 years) with metabolic syndrome; the diagnosis was given by the definition and the diagnostic standard for metabolic syndrome in Japan. The influence of metabolic syndrome on oxygen uptake, work rate and heart rate at VT, and exercise habits were evaluated.

Results

Oxygen uptake and work rate at VT in subjects with metabolic syndrome were significantly lower than those in subjects without metabolic syndrome even after adjusting for body mass index (BMI). The number of subjects with exercise habits was significantly lower in metabolic syndrome. The subjects with exercise habits were significantly older than that in subjects without exercise habits. Furthermore, oxygen uptake and work rate at VT were significantly higher in subjects with exercise habits than those in subjects without exercise habits.

Conclusion

Lower level of VT was characteristic in subjects with metabolic syndrome. Promotion of exercise habits is necessary for preventing and improving metabolic syndrome in Japanese men.

Keywords: Metabolic syndrome, Ventilatory threshold, Exercise habits