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This research aims to evaluate how endurance training affects capillarization and citrate synthase activity in older and young men.

Adaptations in Capillarization and Citrate Synthase Activity in Response to Endurance Training in Older and Young Men

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This research aims to evaluate how endurance training affects capillarization and citrate synthase activity in older and young men.
Participants: 14 men, 7 older (69 years) and 7 young (22 years).
Intervention: 12-week endurance training on a cycle ergometer, 3 times/week at ~70% of VO2max.
Measurements: Assessments of capillarization, citrate synthase activity, and cardiorespiratory fitness at pre-, mid-, and post-training.
Maximal vo2 and cardiac output increased similarly in both groups post-training (p < .05).
Maximal a-vO2diff showed greater levels post-training in both hands (p < .05).
Capillarization indices increased by 30%-40% in older men and 20%-30% in young men post-training (p < .05).

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Randomized trial examines capillarization and citrate synthase activity in older and young men, indicating beneficial effects of endurance training.

Murias et al. (2011) studied this question.

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Randomized trial examines capillarization and citrate synthase activity in older and young men, indicating beneficial effects of endurance training.