Research Article| Volume 67, ISSUE 4, P343-347, December 2010

Orange juice improved lipid profile and blood lactate of overweight middle-aged women subjected to aerobic training



      This study investigated how consumption of orange juice associated with aerobic training affected serum lipids and physical characteristics of overweight, middle-aged women.


      The experimental group consisted of 13 women who consumed 500 mL/d of orange juice and did 1 h aerobic training 3 times a week for 3 months. The control group consisted of another 13 women who did the same aerobic training program but did not consume orange juice.


      At the end of the experiment, the control group lost an average of 15% of fat mass (P < 0.05) and 2.5% of weight (P < 0.05), whereas the experimental group lost 11% of fat mass and 1.2% of weight (P < 0.05). Consumption of orange juice by the experimental group was associated with increased dietary intake of vitamin C and folate by 126% and 61% respectively. Serum LDL-C decreased 15% (P < 0.05) and HDL-C increased 18% (P < 0.05) in the experimental group, but no significant change was observed in the control group. Both groups improved the anaerobic threshold by 20% (P < 0.05), but blood lactate concentration decreased 27% in the experimental group compared to the 17% control group, suggesting that experimental group has less muscle fatigue and better response to training.


      The consumption of 500 mL/d of orange juice associated with aerobic training in overweight women decreased cardiovascular disease risk by reducing LDL-C levels and increasing HDL-C levels. This association also decreased blood lactate concentration and increased anaerobic threshold, showing some improvement in the physical performance.


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