OBJECTIVE: To examine the effect of acute and short-term (approximately 1 week) aerobic exercise training on plasma adiponectin levels in inactive, abdominally obese men. MATERIALS AND METHODS: Inactive and abdominally obese men (n = 38, waist circumference >= 102 cm) recruited from Kingston, Canada were randomly allocated to perform three bouts of aerobic treadmill exercise at either low (50% VO2peak) or high (75% VO2peak) intensity during a 1-week period. Blood samples were taken before and after the first exercise session and 24 to 72 hours following the completion of the final exercise session. RESULTS: Adiponectin levels were elevated immediately following an acute bout of exercise at both high and low intensities (high 5.79 +/- 0.42 versus 5.05 +/- 0.41 micro-g/mL; low 5.24 +/- 0.44 versus 4.37 +/- 0.44 micro-g/mL, p < 0.05) and remained elevated following 30 minutes of rest. In comparison to baseline, adiponectin levels were also elevated 24 to 72 hours following the final exercise session (high 5.47 +/- 0.48 versus 4.88 +/- 0.48 micro-g/mL; low 5.18 +/- 0.49 versus 4.47 +/- 0.49 micro-g/mL, p < 0.05). CONCLUSION: Both acute and short-term aerobic exercise result in a significant increase in plasma adiponectin levels in inactive, abdominally obese men independent of intensity.

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