Key result
Morning exercise resulted in a 72 ± 21 AU higher brachial shear rate at 5 minutes post-exercise compared with afternoon exercise (P=0.05).
Why the study?
Does morning exercise compared to afternoon exercise alter vascular shear stress and arterial diameter in normotensive males?
Population
12 male normotensives
Comparison
30-min bout of cycling at 70% peak oxygen uptake… vs 30-min bout of cycling at 70% peak oxygen uptake…
Design
Other
Follow-up
20 min after exercise
Authors
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Time-of-day may modulate postexercise brachial shear in normotensives; hypothesis-generating and should not yet change practice.
Does morning exercise compared to afternoon exercise alter vascular shear stress and arterial diameter in normotensive males?
Mean Difference: 72
p-value: p=0.05
Morning exercise results in a higher postexercise brachial shear rate compared to afternoon exercise in normotensive men, which may contribute to elevated morning cardiovascular risk.
Jones et al. (2009) studied Normotension (n=12). Morning exercise (0800 h) vs. Afternoon exercise (1600 h) was evaluated on Brachial shear rate at 5 min after exercise (MD 72 AU, p=0.05). Morning exercise resulted in a 72 ± 21 AU higher brachial shear rate at 5 minutes post-exercise compared with afternoon exercise (P=0.05).
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