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Energy expenditure during simulated rowing.

F C Hagerman, M C Connors, J A Gault

    Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology
    |July 1, 1978
    PubMed
    Summary
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    Competitive rowing exercise heavily relies on anaerobic metabolism, with 30% of energy derived anaerobically. This intense exercise pushes athletes to 96-98% of their maximal aerobic capacity, as evidenced by oxygen debt and lactate levels.

    Area of Science:

    • Sports Medicine
    • Exercise Physiology
    • Metabolic Function

    Background:

    • Understanding the metabolic demands of elite athletes is crucial for optimizing training.
    • Rowing ergometer exercise is a common method for assessing athletic performance.

    Purpose of the Study:

    • To quantify the aerobic and anaerobic energy contributions during maximal rowing exercise.
    • To assess the physiological responses to a 6-minute maximal rowing ergometer test in competitive oarsmen.

    Main Methods:

    • Open-circuit spirometry was used to measure metabolic function in 310 competitive oarsmen.
    • Oxygen consumption (Vo2) and oxygen debt were calculated during and after a 6-minute maximal rowing exercise.
    • Venous blood lactate levels were analyzed at rest and during recovery.

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    Main Results:

    • Oarsmen operated at 96-98% of their maximal aerobic capacity, indicating a severe steady state.
    • Average oxygen debt was 13.4 liters, with maximal venous lactates ranging from 126 to 240 mg/100 ml.
    • Aerobic metabolism contributed 70% to the total energy cost, while anaerobiosis provided 30%.

    Conclusions:

    • Maximal rowing exercise elicits significant physiological stress, characterized by high oxygen debt and lactate accumulation.
    • Anaerobic metabolism plays a substantial role, particularly in the initial stages of intense rowing exercise.
    • The findings highlight the importance of both aerobic and anaerobic conditioning for competitive oarsmen.