The Effect of Green Tea Ingestion and Interval Sprinting Exercise on the Body Composition of Overweight Males: A Randomized Trial

Daniel Gahreman, Mehrdad Heydari, Yati Boutcher, Judith Freund, Stephen Boutcher, Daniel Gahreman, Mehrdad Heydari, Yati Boutcher, Judith Freund, Stephen Boutcher

Abstract

The combined effect of green tea ingestion and interval sprinting exercise on body and abdominal fat of overweight males was investigated. Participants were randomly assigned into control (C), green tea (GT), interval sprinting exercise (ISE), and green tea and ISE (GT + ISE) groups. The GT, GT + ISE, and C groups consumed three GT capsules daily. The ISE and GT + ISE groups completed 36 ISE sessions over 12 weeks. Forty eight overweight males with a mean BMI of 28.5 ± 0.92 kg/m² and age of 26 ± 0.7 years acted as participants. There was a significant reduction in total and abdominal fat mass for the ISE and GT + ISE groups, p < 0.05, however, total and abdominal fat mass did not significantly change in the GT and C groups. There was a significant increase in total lean mass, p < 0.05, after the intervention for the ISE and GT + ISE groups only. There was a significant increase in fat oxidation during submaximal aerobic exercise, p < 0.05, after the intervention for the ISE, GT + ISE, and GT groups with no change for the C group. Following the 12-week intervention the ISE and GT + ISE groups, compared to C, recorded a significantly greater decrease in body and abdominal fat, and a significant increase in total lean mass. Ingestion of green tea by itself, however, did not result in a significant decrease in body or abdominal fat, but increased fat utilization during submaximal exercise. The combination of 12 weeks of GT ingestion and ISE did not result in greater total and abdominal fat reduction compared to 12 weeks of ISE alone.

Keywords: abdominal fat; green tea; overweight males; sprinting.

Figures

Figure 1
Figure 1
Change in total body fat mass after the 12-week intervention for the control (C), interval sprinting exercise (ISE), green tea (GT), and green tea and interval sprinting exercise (GT + ISE) groups. * Significantly different from the control group, p < 0.05.
Figure 2
Figure 2
Change in abdominal fat mass after the 12-week intervention for the control (C), interval sprinting exercise (ISE), green tea (GT), and green tea and interval sprinting exercise (GT + ISE) groups. * Significantly different from the control group, p < 0.05.

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Source: PubMed

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