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  • Title: Upper Body Aerobic Exercise as a Possible Predictor of Lower Body Performance.
    Author: Ade CJ, Broxterman RM, Craig JC, Schlup SJ, Wilcox SL, Barstow TJ.
    Journal: Aerosp Med Hum Perform; 2015 Jul; 86(7):599-605. PubMed ID: 26102139.
    Abstract:
    BACKGROUND: Aerobic exercise capacity provides information regarding cardiorespiratory health and physical capacity. However, in many populations the ability to measure whole-body or leg aerobic exercise capacity is limited due to physical disability or lack of appropriate equipment. Clinically there is a need to evaluate aerobic capacity in individuals who cannot use their legs for locomotion. In astronauts the habitable space for exercise testing in the next generation of space exploration systems may be restricted and may not support the traditional lower body testing. Therefore, the purpose was to determine if upper body physical performance could estimate lower body aerobic capacity. METHODS: Maximal O₂uptake (Vo(2max)), gas exchange threshold (GET), and the highest sustainable rate of aerobic metabolism [arm cranking critical power ((A)CP) and lower body critical speed ((L)CS)] were determined in 55 conditioned men and women during arm-cranking and treadmill running. RESULTS: Vo(2max) and GET (48.6 ± 7.6 and 29.0 ± 4.8 ml · kg⁻¹ · min⁻¹, respectively) were significantly lower during arm-cranking exercise compared to running (27.1 ± 7.6 and 13.5 ± 2.6 ml · kg⁻¹ · min⁻¹, respectively). The Vo₂at ACP was significantly lower than the Vo₂at the (L)CS (18.4 ± 5.01 vs. 39.5 ± 8.1 ml · kg⁻¹ · min⁻¹, respectively). There was a significant correlation between arm-cranking and lower body Vo2max, GET, and the Vo₂at (L)CS and ACP. Backward stepwise regression analyses revealed that arm-cranking physical fitness could explain 67%, 40%, and 49% of the variance in lower body Vo(2max), GET, and (L)CS, respectively. DISCUSSION: Results suggest arm-cranking exercise can be used to obtain an approximation of lower body aerobic capacity.
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