Trail Runners Cannot Reach V˙O2max during a Maximal Incremental Downhill Test.
Journal
Medicine and science in sports and exercise
ISSN: 1530-0315
Titre abrégé: Med Sci Sports Exerc
Pays: United States
ID NLM: 8005433
Informations de publication
Date de publication:
05 2020
05 2020
Historique:
pubmed:
10
12
2019
medline:
29
12
2020
entrez:
10
12
2019
Statut:
ppublish
Résumé
The purpose of this study was twofold: (i) determine if well-trained athletes can achieve similar peak oxygen uptake (V˙O2peak) in downhill running (DR) versus level running (LR) or uphill running (UR) and (ii) investigate if lower limb extensor muscle strength is related to the velocity at V˙O2peak (vV˙O2peak) in DR, LR, and UR. Eight athletes (V˙O2max = 68 ± 2 mL·min·kg) completed maximal incremental tests in LR, DR (-15% slope), and UR (+15% slope) on a treadmill (+1, +1.5, and +0.5 km·h every 2 min, respectively) while cardiorespiratory responses and spatiotemporal running parameters were continuously measured. They were also tested for maximal voluntary isometric strength of hip and knee extensors and plantar flexors. Oxygen uptake at maximal effort was approximately 16% to 18% lower in DR versus LR and UR (~57 ± 2 mL·min·kg, 68 ± 2 mL·min·kg, and 70 ± 3 mL·min·kg, respectively) despite much greater vV˙O2peak (22.7 ± 0.6 km·h vs 18.7 ± 0.5 km·h and 9.3 ± 0.3 km·h, respectively). At vV˙O2peak, longer stride length and shorter contact time occurred in DR versus LR and UR (+12%, +119%, -38%, and -61%, respectively). Contrary to knee extensor and plantar flexor, hip extensor isometric strength correlated to vV˙O2peak in DR, LR, and UR (r = -0.86 to -0.96, P < 0.05). At similar V˙O2, higher heart rate and ventilation emerged in DR versus LR and UR, associated with a more superficial ventilation pattern. This study demonstrates that well-trained endurance athletes, accustomed to DR, achieved lower V˙O2peak despite higher vV˙O2peak during DR versus LR or UR maximal incremental tests. The specific heart rate and ventilation responses in DR might originate from altered running gait and increased lower-limb musculotendinous mechanical loading, furthering our understanding of the particular physiology of DR, ultimately contributing to optimize trail race running performance.
Identifiants
pubmed: 31815832
doi: 10.1249/MSS.0000000000002240
pii: 00005768-202005000-00015
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1135-1143Références
Lindstedt SL, LaStayo PC, Reich TE. When active muscles lengthen: properties and consequences of eccentric contractions. News Physiol Sci. 2001;16:256–61.
Dufour SP, Doutreleau S, Lonsdorfer-Wolf E, et al. Deciphering the metabolic and mechanical contributions to the exercise-induced circulatory response: insights from eccentric cycling. Am J Physiol Regul Integr Comp Physiol. 2007;292(4):R1641–8.
Lemire M, Lonsdorfer-Wolf E, Isner-Horobeti ME, et al. Cardiorespiratory responses to downhill versus uphill running in endurance athletes. Res Q Exerc Sport. 2018;89(4):511–7.
Liefeldt G, Noakes TD, Dennis SC. Oxygen delivery does not limit peak running speed during incremental downhill running to exhaustion. Eur J Appl Physiol Occup Physiol. 1992;64(6):493–6.
Townshend AD, Worringham CJ, Stewart IB. Spontaneous pacing during overground hill running. Med Sci Sports Exerc. 2010;42(1):160–9.
Kolkhorst FW, Mittelstadt SW, Dolgener FA. Perceived exertion and blood lactate concentration during graded treadmill running. Eur J Appl Physiol Occup Physiol. 1996;72(3):272–7.
Billat V, Koralsztein JP. Significance of the velocity at V˙O2max and time to exhaustion at this velocity. Sports Med. 1996;22(2):90–108.
Balducci P, Clemencon M, Morel B, Quiniou G, Saboul D, Hautier CA. Comparison of level and graded treadmill tests to evaluate endurance mountain runners. J Sports Sci Med. 2016;15(2):239–46.
Denadai BS, de Aguiar RA, de Lima LC, Greco CC, Caputo F. Explosive training and heavy weight training are effective for improving running economy in endurance athletes: a systematic review and meta-analysis. Sports Med. 2017;47(3):545–54.
Balducci P, Clemencon M, Trama R, Blache Y, Hautier C. Performance factors in a mountain ultramarathon. Int J Sports Med. 2017;38(11):819–26.
Hayes PR, Bowen SJ, Davies EJ. The relationships between local muscular endurance and kinematic changes during a run to exhaustion at vV˙O2max. J Strength Cond Res. 2004;18(4):898–903.
Vernillo G, Giandolini M, Edwards WB, et al. Biomechanics and physiology of uphill and downhill running. Sports Med. 2016;47(4):615–29.
Poole DC, Jones AM. Measurement of the maximum oxygen uptake V˙O2max: V˙O2peak is no longer acceptable. J Appl Physiol (1985). 2017;122(4):997–1002.
Beaver WL, Wasserman K, Whipp BJ. A new method for detecting anaerobic threshold by gas exchange. J Appl Physiol. 1986;60(6):2020–7.
Westerlind KC, Byrnes WC, Harris C, Wilcox AR. Alterations in oxygen consumption during and between bouts of level and downhill running. Med Sci Sports Exerc. 1994;26(9):1144–52.
Dick RW, Cavanagh PR. An explanation of the upward drift in oxygen uptake during prolonged sub-maximal downhill running. Med Sci Sports Exerc. 1987;19(3):310–7.
Maffiuletti NA, Bizzini M, Desbrosses K, Babault N, Munzinger U. Reliability of knee extension and flexion measurements using the con-Trex isokinetic dynamometer. Clin Physiol Funct I. 2007;27(6):346–53.
Lipski M, Abbiss CR, Nosaka K. Cardio-pulmonary responses to incremental eccentric and concentric cycling tests to task failure. Eur J Appl Physiol. 2018;118(5):947–57.
Minetti AE, Ardigo LP, Saibene F. Mechanical determinants of the minimum energy cost of gradient running in humans. J Exp Biol. 1994;195:211–25.
Huxley AF. Muscle structure and theories of contraction. Prog Biophys Biophys Chem. 1957;7:255–318.
Lombardi V, Piazzesi G. The contractile response during steady lengthening of stimulated frog muscle fibres. J Physiol. 1990;431:141–71.
Herzog W. Mechanisms of enhanced force production in lengthening (eccentric) muscle contractions. J Appl Physiol (1985). 2014;116(11):1407–17.
Hessel AL, Lindstedt SL, Nishikawa KC. Physiological mechanisms of eccentric contraction and its applications: a role for the Giant Titin protein. Front Physiol. 2017;8:70.
Lechauve JB, Perrault H, Aguilaniu B, et al. Breathing patterns during eccentric exercise. Respir Physiol Neurobiol. 2014;202:53–8.
Gottschall JS, Kram R. Ground reaction forces during downhill and uphill running. J Biomech. 2005;38(3):445–52.
Waldrop TG, Eldridge FL, Iwamoto GA, Mitchell JH. Central neural control of respiration and circulation during exercise. In: Soc AP, editor. Handbook of Physiology Exercise: Regulation and Integration of Multiple Systems. Bethesda; 1996. pp. 333–80.
Takano N. Phase relation and breathing pattern during locomotor/respiratory coupling in uphill and downhill running. Jpn J Physiol. 1995;45(1):47–58.
Ehrstrom S, Tartaruga MP, Easthope CS, Brisswalter J, Morin JB, Vercruyssen F. Short trail running race: beyond the classic model for endurance running performance. Med Sci Sports Exerc. 2018;50(3):580–8.
Brazier J, Maloney S, Bishop C, Read PJ, Turner AN. Lower extremity stiffness: considerations for testing, performance enhancement, and injury risk. J Strength Cond Res. 2019;33(4):1156–66.
Park SK, Jeon HM, Lam WK, Stefanyshyn D, Ryu J. The effects of downhill slope on kinematics and kinetics of the lower extremity joints during running. Gait Posture. 2018;68:181–6.