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New Records In Aerobic Power Among Octogenarian Lifelong Endurance Athletes
Human Performance Laboratory, Ball State Univ., Muncie, IN 47306, United States.
Human Performance Laboratory, Ball State Univ., Muncie, IN 47306, United States.
Human Performance Laboratory, Ball State Univ., Muncie, IN 47306, United States.
Human Performance Laboratory, Ball State Univ., Muncie, IN 47306, United States.
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2013 (English)In: Journal of applied physiology, ISSN 8750-7587, E-ISSN 1522-1601, Vol. 114, no 1, 3-10 p.Article in journal (Refereed) Published
Abstract [en]

New records in aerobic power among octogenarian lifelong endurance athletes. J Appl Physiol 114: 3-10, 2013. First published October 11, 2012; doi:10.1152/japplphysiol.01107.2012.-We examined whole body aerobic capacity and myocellular markers of oxidative metabolism in lifelong endurance athletes [n = 9, 81 ± 1 yr, 68 ± 3 kg, body mass index (BMI) = 23 ± 1 kg/m2] and age-matched, healthy, untrained men (n = 6; 82 ± 1 y, 77 ± 5 kg, BMI = 26 ± 1 kg/m2). The endurance athletes were cross-country skiers, including a former Olympic champion and several national/regional champions, with a history of aerobic exercise and participation in endurance events throughout their lives. Each subject performed a maximal cycle test to assess aerobic capacity (VO2max). Subjects had a resting vastus lateralis muscle biopsy to assess oxidative enzymes (citrate synthase and βHAD) and molecular (mRNA) targets associated with mitochondrial biogenesis [peroxisome proliferator-activated receptor-γ coactivator 1α (PGC-1α) and mitochondrial transcription factor A (Tfam)]. The octogenarian athletes had a higher (P < 0.05) absolute (2.6 ± 0.1 vs. 1.6 ± 0.1 l/min) and relative (38 ± 1 vs. 21 ± 1 ml·kg-1·min-1) VO2max, ventilation (79 ± 3 vs. 64 ± 7 l/min), heart rate (160 ± 5 vs. 146 ± 8 beats per minute), and final workload (182 ± 4 vs. 131 ± 14 W). Skeletal muscle oxidative enzymes were 54% (citrate synthase) and 42% (βHAD) higher (P < 0.05) in the octogenarian athletes. Likewise, basal PGC-1α and Tfam mRNA were 135% and 80% greater (P < 0.05) in the octogenarian athletes. To our knowledge, the VO2max of the lifelong endurance athletes is the highest recorded in humans >80 yr of age and comparable to nonendurance trained men 40 years younger. The superior cardiovascular and skeletal muscle health profile of the octogenarian athletes provides a large functional reserve above the aerobic frailty threshold and is associated with lower risk for disability and mortality. © 2013 the American Physiological Society.

Place, publisher, year, edition, pages
2013. Vol. 114, no 1, 3-10 p.
Keyword [en]
Aging; Exercise; Heart rate; Oxygen consumption; Skeletal muscle
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-17813DOI: 10.1152/japplphysiol.01107.2012ISI: 000313051000002Scopus ID: 2-s2.0-84871752629OAI: oai:DiVA.org:miun-17813DiVA: diva2:577896
Note

Published online before print October 11, 2012

Available from: 2012-12-17 Created: 2012-12-17 Last updated: 2013-12-10Bibliographically approved

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