Abstract
An ageing related decline in muscle strength and steadiness decreases quality of life and increases the risk for falls. Downhill treadmill walking (DTW) may enhance muscle strength and steadiness in older adults. Eighteen healthy older adults (age: 67 ± 4, body mass: 75 ± 14 kg) completed 12-weeks of level treadmill walking (LTW, 0 %, n = 8) or DTW (−10 %, n = 10) (30 min, 3 days per week) at a self-selected walking speed (re-adjusted in week 4 and 8). Maximal voluntary isometric force (MVIF) and electromyography (EMG) of the m. quadriceps femoris (QF) were measured at baseline, 4, 8 and 12 weeks. Steadiness of submaximal (5, 10 and 20 % MVIF) isometric contractions (i.e. coefficient of variation of the force signal) and EMG of QF were measured at baseline and 12 weeks. Baseline MVIF of LTW (340 ± 112 N) and DTW (368 ± 128 N) increased equally by 14 ± 6 and 5 ± 6 % (p < 0.05). Steadiness at 5 %MVIF improved following 12 weeks of LTW (baseline: 0.04 ± 0.01; 12 weeks: 0.03 ± 0.01) and DTW (baseline: 0.04 ± 0.02; 12 weeks: 0.03 ± 0.01 (p < 0.05). EMG root mean square of m. vastus lateralis during MVIF increased by 38 % following 12 weeks of LTW only (p < 0.05). The potential implications for an exercise modality, such as DTW, with a lower oxygen demand, to improve muscle strength could serve as a rehabilitative countermeasure for older adults.
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References
Bellew JW (2002) The effect of strength training on control of force in older men and women. Aging Clin Exp Res 1:35–41
Bompa T (1965) Periodization of strength. Sports Rev 1:26–31
Booth FW, Lees SJ (2006) Physically active subjects should be the control group. Med Sci Sports Exerc 38(3):405–506
Carville SF, Rutherford OM, Newham DJ (2006) Power output, isometric strength and steadiness in the leg muscles of pre- and postmenopausal women; the effects of hormone replacement therapy. Eur J Appl Physiol 96:292–298
Close GL, Kayani A, Vasilaki A, McArdle A (2005) Skeletal muscle damage with exercise and aging. Sports Med 35(5):413–427
Deschenes MR (2004) Effects of aging on muscle fibre type and size. Sports Med 34(12):809–824
Doherty TJ (2003) Physiology of aging: invited review: aging and sarcopenia. J Appl Physiol 95(4):1717–1727
Doherty TJ, Vandervoort AA, Brown WF (1993) Effects of ageing on the motor unit: a brief review. Can J Appl Physiol 18(4):331–358
Dreyer HC, Schroeder ET, Hawkins SA et al (2006) Chronic exercise and skeletal muscle power in older men. Appl J Physiol: Nutr Metab 31:190–195
Edgerton VR, Smith JL, Simpson DR (1975) Muscle fibre type populations of human leg muscles. Histochem J 7:259–266
Esposito F, Ce E, Gobbo M, Veicsteinas A, Orizio C (2005) Surface EMG and mechanomyogram disclose isokinetic training effects on quadriceps muscle in elderly people. Eur J Appl Physiol 94:5–6
Evans W (1997) Functional and metabolic consequences of sarcopenia. J Nutr 127:998S–1003S
Fenstermaker KL, Plowman SA, Looney MA (1992) Validation of the rockport fitness walking test in females 65-years and older. Res Q Exercise Sport 63:322–327
Fiatarone MA, Marks EC, Ryan ND et al (1990) High-intensity strength training in nonagenarians. Effects on skeletal muscle. J Am Med Assoc 263:3029–3034
Fiatarone-Singh MA, Ding W, Manfredi et al (1999) Insulin-like growth factor I in skeletal muscle after weight lifting exercises in frail elders. Am J Physiol 277:E135–E143
Galganski ME, Fuglevand AJ, Enoka RM (1993) Reduced control of motor output in a human hand muscle of elderly subjects during submaximal contractions. J Neurophysiol 69:2108–2115
Gauchard GC, Jeandel C, Tessier A, Perrin PP (1999) Beneficial effect of proprioceptive physical activities on balance control in elderly human subjects. Neurosci Letters 273(2):81–84
Gault ML, Clements RE, Willems MET (2011) Eccentric contraction-induced muscle injury does not change walking economy in older adults. J Hum Kinet 27:55–65
Gault ML, Clements RE, Willems MET (2012a) Functional mobility of older adults after concentric and eccentric endurance exercise. Eur J Appl Physiol. doi:10.1007/s00421-012-2338-4
Gault ML, Clements RE, Willems MET (2012b) Cardiovascular responses during downhill treadmill walking at self-selected intensity in older adults J Aging Phys Act (in press)
Grabiner MD, Enoka RM (1995) Change in movement capabilities with aging. Exerc Sport Sci Rev 23:65–104
Gregoire L, Veeger HE, Huijing PA, Van Ingen Schenau GJ (1984) Role of mono- and biarticular muscles in explosive movements. Int J Sports Med 5:301–305
Hameed M, Toft AD, Pedersen BK, Harridge SDR, Goldspink G (2008) Effects of eccentric cycling exercise on IGF-1 splice variant expression in the muscles of young and elderly people. J Med Sci Sports 18:447–452
Harridge SD (2003) Ageing and local growth factors in muscle. Sports Med 13:34–39
Harridge SD, Magnusson G, Saltin B (1997) Life-long endurance-trained elderly men have high aerobic power, but have similar muscle strength to non-active elderly men. Aging (Milano) 9:80–87
Hortobágyi T, Tunnel D, Moody J, Beam S, DeVita P (2001) Low- or high-intensity strength training partially restores impaired quadriceps force accuracy and steadiness in aged adults. J Gerontol Biol Sci Med Sci 56(1):B38–B47
Kamen G, Gabriel DA (2010) Essentials of electromyography. Human Kinetics, Leeds
Keen DA, Yue GH, Enoka RM (1994) Training-related enhancement in the control of motor output in elderly humans. J Appl Physiol 77(6):2648–2658
Kernell D (1983) Functional properties of spinal motor neurons and gradation of muscle force. Adv Neurol 39:213–226
Klass M, Baudry S, Duchateau J (2007) Voluntary activation during maximal contraction with advancing age: a brief review. Eur J Appl Physiol 100:543–551
Laidlaw DH, Kornatz KW, Keen DA, Suzuki S, Enoka RM (1999) Strength training improves the steadiness of slow lengthening contractions performed by old adults. JAppl Physiol 87:1786–1795
Laidlaw DH, Bilodeau M, Enoka RM (2000) Steadiness is reduced and motor unit discharge is more variable in old adults. Muscle Nerve 23:600–612
LaStayo PC, Reich TE, Urquhart M, Hoppeler H, Lindstedt SL (1999) Chronic eccentric exercise: improvement in muscle strength with little demand for oxygen consumption. Am J Physiol 276:R611–R615
LaStayo PC, Pierotti DJ, Pifer J, Hoppeler H, Lindstedt SL (2000) Eccentric ergometry: increases in locomotor muscle size and strength at low training intensities. Am J Physiol 278:E1282–E1288
Little RJA, Rubin DB (1989) The analysis of social science data with missing values. Sociol Method Res 18:292–326
Manini TM, Cook SB, Ordway NR, Ploutz-Snyder RJ, Plutz-Snyder LL (2005) Knee extensor isometric unsteadiness does not predict functional limitation in older adults. Am J Phys Med Rehab 84:112–121
Marcell TJ (2003) Sarcopenia: causes, consequences, and preventions. J Gerontol Biol Sci Med Sci 56(10):M911–M916
McHugh MP (2003) Recent advances in the understanding of the repeated bout effect: the protective effect against muscle damage from a single bout of eccentric exercise. Scand J Med Sci Sports 13:88–97
Mueller M, Breil FA, Vogt M et al (2009) Different response to eccentric and concentric training in older men and women. Eur J Appl Physiol 107(2):145–153
Navalta JW, Sedlock DA, Park KS (2004) Physiological responses to downhill walking in older and younger individuals. J Exerc Physiol 7(6):45–51
Rabita G, Perot C, Lensel-Corbeil G (2000) Differential effect of knee extension isometric training on the different muscles of the quadriceps femoris in humans. Eur J Appl Physiol 83:531–538
Rantanen T, Sipilä S, Suominen H (1993) Muscle strength and history of heavy manual work among elderly trained women and randomly chosen sample population. Eur J Appl Physiol O 66:514–517
Reeves ND, Maganaris CN, Narici MV (2003) Effect of strength training on human patella tendon mechanical properties of older individuals. J Physiol 548:971–981
Semmler JG, Tucker KJ, Allen TJ, Proske U (2007) Eccentric exercise increases EMG amplitude and force fluctuations during submaximal contractions of elbow flexor muscles. J Appl Physiol 103:979–989
Seynnes O, Hue OA, Garrandes F et al (2005) Force steadiness in the lower extremities as an independent predictor of functional performance in older women. J Aging Phys Activ 13(4):395–408
Sipilä S, Viltasalo J, Era P, Suominen H (1991) Muscle strength in male athletes aged 70–81 years and a population sample. Eur J Appl Physiol O 63:399–403
Sipilä S, Multanen J, Kallinen M, Era P, Suominen H (1996) Effects of strength and endurance training on isometric muscle strength and walking speed in elderly women. Acta Physiol Scand 156:457–464
Steiner R, Meyer K, Lippuner K et al (2004) Eccentric endurance training in subjects with coronary artery disease: a novel exercise paradigm in cardiac rehabilitation? Eur J Appl Physiol 91:572–578
Thornell LE, Lindström M, Renault V, Mouly V, Butler-Browne GS (2003) Satellite cells and training in the elderly. Scand J Med Sci Sports 13:48–55
Tracy BL, Enoka RM (2002) Older adults are less steady during sub-maximal isometric contractions with the knee extensor muscles. J Appl Physiol 92:1004–1012
Tracy BL, Enoka RM (2006) Steadiness training with light loads in the knee extensors of elderly adults. Med Sci Sports Exerc 38(4):735–745
Trappe S, Williamson D, Godard M (2002) Maintenance of whole muscle strength and size following resistance training in older men. J Gerontol Biol Sci Med Sci 57:138–143
Tseng SC, Liu W, Finley M, McQuade K (2007) Muscle activation profiles about the knee during Tai-Chi stepping movement compared to the normal gait step. J Electromyogr Kines 17(3):372–380
Wanta DM, Nagle FJ, Webb P (1993) Metabolic response to graded downhill walking. Med Sci Sports Exerc 25(1):159–162
Warren GL, Lowe DA, Armstrong RB (1999) Measurement tools used in the study of eccentric contraction-induced injury. Sports Med 27:43–59
Watanabe K, Akima H (2009) Normalized EMG to normalized torque relationship of vastus intermedius muscle during isometric knee extension. Eur J Appl Physiol 106:665–673
Yarasheski KE (2003) Exercise, aging, and muscle protein metabolism. J Gerontol Biol Sci Med Sci 58(10):M918–M922
Zoll J, Steiner R, Meyer K et al (2006) Gene expression in skeletal muscle of coronary artery disease patients after concentric and eccentric endurance training. Eur J Appl Physiol 96:413–422
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Gault, M.L., Willems, M.E.T. Isometric strength and steadiness adaptations of the knee extensor muscles to level and downhill treadmill walking in older adults. Biogerontology 14, 197–208 (2013). https://doi.org/10.1007/s10522-013-9423-x
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DOI: https://doi.org/10.1007/s10522-013-9423-x