What question did this study set out to answer?

To evaluate the physiological responses to repeated continuous and discontinuous bicycle ergometer exercise and determine the degree of familiarization required for reproducible results.

August 1, 1970Clinical Science

Physiological Effects of Repeated Exercise

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Authors

CDC. T. M. DaviesUK Dementia Research Institute WTWilliam TuxworthBirmingham City University JYJ.M. YoungUniversity of Cambridge

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Implication

Repeated-measures study reveals marked submaximal heart rate declines in healthy men, indicating exercise capacity testing requires multiple familiarization sessions.

Key Points

To evaluate the physiological responses to repeated continuous and discontinuous bicycle ergometer exercise and determine the degree of familiarization required for reproducible results.
Assessed healthy male subjects performing repeated continuous progressive and discontinuous exercise tests on an upright bicycle ergometer across 16 experimental days.
Measured cardiac frequency, pulmonary minute ventilation, and oxygen consumption during submaximal work and at maximal effort.
Submaximal cardiac frequency at a fixed oxygen intake of 1.5 l/min decreased from 145 beats/min to 124 beats/min during the first four sessions, reaching 118 beats/min by Day 16, while maximum oxygen intake increased significantly from Day 8 onwards.
Prediction accuracy for maximum oxygen intake from cardiac frequency and oxygen intake improved from -15.4 ± 8.9% on Day 1 to -6.5 ± 10.5% on Day 7 and -0.9 ± 3.4% on Day 15.
No significant differences occurred between continuous and discontinuous protocols, but at least three preliminary familiarization trials were necessary to establish reliable measurements.

Cite This Study

Davies et al. (1970) studied this question.

synapsesocial.com/papers/6ab1f81fdae2bc6b37c86f2a https://doi.org/10.1042/cs0390247

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Implication

Repeated-measures study reveals marked submaximal heart rate declines in healthy men, indicating exercise capacity testing requires multiple familiarization sessions.

Physiological Effects of Repeated Exercise

Discussion

Member takes

Implication

Key Points

Cite This Study

Physiological Effects of Repeated Exercise

Discussion

Member takes

Implication

Key Points

Cite This Study

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