Key result
Older age linked to a ~12% smaller reduction in splanchnic blood flow during hot exercise.
Why the study?
The effect of age on cardiac output and regional blood flow redistribution during dynamic exercise in warm environments was unclear.
Does age alter the regional distribution of blood flow during moderate-intensity exercise in warm environments?
Comparison
Young men vs older men during exercise at 35% and 60% VO2peak in 22 and 36 degrees C
Design
Cross-sectional study
Authors
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Older adults show attenuated splanchnic/renal flow redistribution during exercise-heat stress; leaves open relevance to age-related heat intolerance.
Cross-Sectional (n=12)
Does age alter the regional distribution of blood flow during moderate-intensity exercise in warm environments?
Absolute Event Rate: -33% vs -45%
p-value: p=< 0.01
Older men exhibit a blunted redistribution of blood flow away from splanchnic and renal vascular beds during moderate-intensity exercise compared to young men.
Kenney et al. (1995) reported a cross-sectional. Older age vs. Young age was evaluated on Decrease in splanchnic blood flow at 60% VO2peak in a hot environment (p=< 0.01). Older age was associated with a smaller decrease in splanchnic blood flow during moderate-intensity exercise in a hot environment compared to young men (-33% vs -45%, P<0.01).
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