Czasopismo
Tytuł artykułu
Autorzy
Warianty tytułu
Języki publikacji
Abstrakty
The aim of the study was to examine whether self-selected walking speed during downhill treadmill walking by older adults would result in muscle injury and changes in physiological responses during level walking. Twenty-six participants (age: 67 ± 4 yrs; height: 1.69 ± 0.09 m; body mass: 74.9 ± 13.1kg) were assigned to level (n = 11, 30 min, 0%) or downhill walking (n=15, 30 min, -10%) at a self-selected walking speed. Self-selected walking speed and exercise intensity were similar for both groups (level: 4.2±0.4 km·hr-1, 42±6% VO2max; downhill: 4.6±0.6 km·hr-1, 44±15% VO2max). After 48-hours, downhill walking had reduced maximal voluntary isometric force of the m. quadriceps femoris (-15%, P<0.001), indicative of muscle injury, but no changes were observed for walking economy, minute ventilation, heart rate and respiratory exchange ratio during level walking. For older adults, downhill walking at a selfselected walking speed causes muscle injury without any detrimental effect on walking economy. Regular downhill walking at a self-selected walking speed by older adults is an eccentric endurance activity that may have the potential to improve cardiovascular fitness and muscle strength.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
55-65
Opis fizyczny
Daty
wydano
2011-03-01
online
2011-04-06
Twórcy
autor
- School of Science, Technology and Health, University Campus Suffolk, Ipswich, Suffolk, IP4 1QJ, United Kingdom
autor
- Department of Sport and Exercise Sciences, University of Chichester, College Lane, Chichester, West Sussex, PO19 6PE, United Kingdom
autor
- Department of Sport and Exercise Sciences, University of Chichester, College Lane, Chichester, West Sussex, PO19 6PE, United Kingdom
Bibliografia
- Ahmadi S, Sinclair PJ, Davis GM. Muscle oxygenation after downhill walking-induced muscle damage. Clin Physiol Funct Imaging, 2008; 28: 55-63.[PubMed][WoS]
- Braun WA, Dutto DJ. The effects of a single bout of downhill running and ensuing delayed onset of muscle soreness on running economy performed 48h later. Eur J Appl Physiol, 2003; 90: 29-34.[PubMed][Crossref]
- Chen TC, Nosaka K, Tu JH. Changes in running economy following downhill running. J Sports Sci, 2007; 25: 55-63.[WoS][Crossref]
- Chen TC, Nosaka K, Wu CC. Effects of a 30-min running performed daily after downhill running on recovery of muscle function and running economy. J Sci Med Sport, 2008; 11: 271-279.[Crossref]
- Chen TC, Nosaka K, Lin MJ, Wu CJ, Nosaka K. Changes in running economy at different intensities following downhill running. J Sports Sci, 2009; 27: 1137-1144.[Crossref][WoS]
- Eston RG, Mickleborough J, Baltzopoulos V. Eccentric activation and muscle damage: Biomechanical and physiological considerations during downhill running. Brit J Sports Med, 1995; 29: 89-94.[Crossref]
- Fenstermaker KL, Plowman SA, Looney MA. Validation of the rockport fitness walking test in females 65 years and older. Res Q Exerc Sport, 1992; 63: 322-327.[Crossref][PubMed]
- Fridén J, Sjöström M, Ekblom B. Myofibrillar damage following intense eccentric exercise in man. Int J Sports Med, 1983; 4: 170-176.[Crossref][PubMed]
- Frontera WF, Hughes VA, Lutz KJ, Evans WJ. A cross-sectional study of muscle strength and mass in 45- to 78- year old men and women. J Appl Physiol, 1991; 71: 644-650.
- Hamill J, Freedson P, Clarkson PM, Braun B. Muscle soreness during running: biomechanical and physiological considerations. J Appl Biomech, 1991; 7: 125-137.
- Harries UJ, Bassey EJ. Torque-velocity relationships for the knee extensors in their 3rd and 7th decades. Eur J Appl Physiol, 1990; 60: 187-190.
- Howatson G, Van Someren K, Hortobágyi T. Repeated bout effect after maximal eccentric exercise. Int J Sports Med, 2007; 28: 557-563.[PubMed][Crossref]
- Jones AM. Middle and long distance running. In: Winter EM, Jones AM, Davison RC et al (eds). Sport and Exercise Physiology Testing Standards: The British Association of Sport and Exercise Sciences Guide 2006, Routledge.
- Malatesta D, Simar D, Dauvilliers Y, Candau R, Borrani F, Préfaut C, Caillaud C. Energy cost of walking and gait instability in healthy 65- and 80-yr-olds. J Appl Physiol, 2003; 95: 2248-2256.
- Martin V, Millet GY, Lattier G, Perrod L. Why does knee extensor muscles torque decrease after eccentric-type exercise? J Sports Med Phys Fitness, 2005; 45: 143-151.
- Park ND, Maresca RD, McKibans KI, Morgan DR, Allen TS, Warren GL. Caffeines enhancement of maximal voluntary strength and activation in uninjured but not injured muscle. Int J Sport Nutr Exerc Metab, 2008; 18: 639-652.[PubMed]
- Paschalis V, Koutedakis Y, Baltzopoulos V, Mougios V, Jamurtas AZ, Theoharis V. The effects of muscle damage on running economy in healthy males. Int J Sports Med, 2005; 26: 827-831.[PubMed][Crossref]
- Scott KE, Rozenek R, Russo AC, Crussemeyer JA, Lacourse MG. Effects of delayed onset muscle soreness on selected physiological responses to submaximal running. J Strength Cond Res, 2003; 17: 652-658.[PubMed]
- Seynnes O, Hue OA, Garrandes F, Colson SS, Bernard PL, Legros P, Fiatarone Singh MA. Force steadiness in the lower extremities as an independent predictor of functional performance in older women. J Aging Phys Act, 2005; 13: 395-408.
- Tiainen K, Pajala S, Sipilä S, Kaprio J, Koskenvuo M, Alén M, Heikkinen E, Tolvanen A, Rantanen T. Genetic effects in common on maximal walking speed and muscle performance in older women. Scand J Med Sci Sports, 2007; 17: 274-280.[PubMed]
- Tracy BL, Enoka RM. Older adults are less steady during sub-maximal isometric contractions with the knee extensor muscles. J Appl Physiol, 2002; 92: 1004-1012.
- Warren GL, Lowe DA, Armstrong RB. Measurement tools used in the study of eccentric contraction-induced injury. Sports Med, 1999; 27: 43-59.[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_v10078-011-0005-1