BACKGROUND: Physical activity recommendations promote the accumulation of aerobic activity in bouts of >or=10 min. It is important to determine whether shorter bouts of activity can influence health. OBJECTIVE: We compared the effects of accumulating ten 3-min bouts of brisk walking with those of one 30-min bout of brisk walking on postprandial plasma triacylglycerol concentrations and resting blood pressure. DESIGN:Fifteen healthy young men completed three 2-d trials >or=1 wk apart in a randomized, repeated-measures design. On day 1, subjects rested (no exercise) or walked briskly in either ten 3-min bouts (30 min rest between each) or one 30-min bout (gross energy expenditure: 1.10 MJ/30 min). On day 2, subjects rested and consumed high-fat test meals for breakfast and lunch. RESULTS: On day 2 area under the plasma triacylglycerol concentration over time curve was 16% lower on the accumulated and continuous brisk walking trials than on the control trial (x +/- SEM: 9.98 +/- 0.67 compared with 9.99 +/- 0.76 compared with 11.90 +/- 1.02 mmol x 7h/L, respectively; P = 0.005, one-factor ANOVA). Resting systolic blood pressure was 6-7% lower throughout day 2 on the accumulated and continuous trials than on the control trial (109 +/- 1 compared with 110 +/- 1 compared with 117 +/- 2 mm Hg, respectively; P < 0.0005). CONCLUSION: Accumulating 30 min of brisk walking in short (3-min) bouts is equally effective in reducing postprandial lipemia and systolic blood pressure as is one continuous 30-min bout.
RCT Entities:
BACKGROUND: Physical activity recommendations promote the accumulation of aerobic activity in bouts of >or=10 min. It is important to determine whether shorter bouts of activity can influence health. OBJECTIVE: We compared the effects of accumulating ten 3-min bouts of brisk walking with those of one 30-min bout of brisk walking on postprandial plasma triacylglycerol concentrations and resting blood pressure. DESIGN: Fifteen healthy young men completed three 2-d trials >or=1 wk apart in a randomized, repeated-measures design. On day 1, subjects rested (no exercise) or walked briskly in either ten 3-min bouts (30 min rest between each) or one 30-min bout (gross energy expenditure: 1.10 MJ/30 min). On day 2, subjects rested and consumed high-fat test meals for breakfast and lunch. RESULTS: On day 2 area under the plasma triacylglycerol concentration over time curve was 16% lower on the accumulated and continuous brisk walking trials than on the control trial (x +/- SEM: 9.98 +/- 0.67 compared with 9.99 +/- 0.76 compared with 11.90 +/- 1.02 mmol x 7h/L, respectively; P = 0.005, one-factor ANOVA). Resting systolic blood pressure was 6-7% lower throughout day 2 on the accumulated and continuous trials than on the control trial (109 +/- 1 compared with 110 +/- 1 compared with 117 +/- 2 mm Hg, respectively; P < 0.0005). CONCLUSION: Accumulating 30 min of brisk walking in short (3-min) bouts is equally effective in reducing postprandial lipemia and systolic blood pressure as is one continuous 30-min bout.
Authors: Michael Gleeson; Nicolette C Bishop; David J Stensel; Martin R Lindley; Sarabjit S Mastana; Myra A Nimmo Journal: Nat Rev Immunol Date: 2011-08-05 Impact factor: 53.106
Authors: Saravana Pillai Arjunan; Kevin Deighton; Nicolette C Bishop; James King; Alvaro Reischak-Oliveira; Alice Rogan; Matthew Sedgwick; Alice E Thackray; David Webb; David J Stensel Journal: Eur J Appl Physiol Date: 2015-10-05 Impact factor: 3.078