Changes in motor unit discharge rate are not associated with the amount of twitch potentiation in old men

Journal of Applied Physiology

Volumn 93, Issue 5, 2002, Pages 1616-1621

  Klein, C S ^a   Rice, C L ^a   Ivanova, T D ^a   Garland, S J ^a  

^a UNIVERSITY OF WESTERN ONTARIO   (Canada)

Author keywords

Aging; Contractile properties; Motoneuron; Rate coding; Skeletal muscle

Indexed keywords

AGE DISTRIBUTION; AGED; AGING; ARTICLE; BICEPS BRACHII MUSCLE; ELECTROMYOGRAPHY; HUMAN; HUMAN EXPERIMENT; MALE; MOTOR UNIT; MOTOR UNIT POTENTIAL; MUSCLE CONTRACTION; MUSCLE ISOMETRIC CONTRACTION; MUSCLE TWITCH; NORMAL HUMAN; PRIORITY JOURNAL; TRICEPS BRACHII MUSCLE;

EID: 0036872055     PISSN: 87507587     EISSN: None     Source Type: Journal    
DOI: 10.1152/japplphysiol.00414.2002     Document Type: Article

References (40)

1. Botterman BR and Cope TC. Motor-unit stimulation patterns during fatiguing contractions of constant tension. J Neurophysiol 60: 1198-1214, 1988.
2. Butchart P, Farquhar R, Part NJ, and Roberts RC. The effect of age and voluntary contraction on presynaptic inhibition of soleus muscle Ia afferent terminals in man. Exp Physiol 78: 235-242, 1993.
3. Campbell MJ, McComas AJ, and Petito F. Physiological changes in ageing muscles. J Neurol Neurosurg Psychiatry 36: 174-182, 1973.
4. Connelly DM, Rice CL, Roos MR, and Vandervoort AA. Motor unit firing rates and contractile properties in tibialis anterior of young and old men. J Appl Physiol 87: 843-852, 1999.
5. Corden DM and Lippold OC. Age-related impaired reflex sensitivity in a human hand muscle. J Neurophysiol 76: 2701-2706, 1996.
6. De Luca CJ, Foley PJ, and Erim Z. Motor unit control properties in constant-force isometric contractions. J Neurophysiol 76: 1503-1516, 1996.
7. Doherty TJ and Brown WF. Age-related changes in the twitch contractile properties of human thenar motor units. J Appl Physiol 82: 93-101, 1997.
8. Doherty TJ, Vandervoort AA, Taylor AW, and Brown WF. Effects of motor unit losses on strength in older men and women. J Appl Physiol 74: 868-874, 1993.
9. Earles D, Vardaxis V, and Koceja D. Regulation of motor output between young and elderly subjects. Clin Neurophysiol 112: 1273-1279, 2001.
10. Enoka RM, Hutton RS, and Eldred E. Changes in excitability of tendon tap and Hoffmann reflexes following voluntary contractions. Electroencephalogr Clin Neurophysiol 48: 664-672, 1980.
11. Enoka RM, Robinson GA, and Kossev AR. A stable, selective electrode for recording single motor unit potentials in humans. Exp Neurol 99: 761-764, 1988.
12. Erim Z, Beg MF, Burke DT, and De Luca CJ. Effects of aging on motor-unit control properties. J Neurophysiol 82: 2081-2091, 1999.
13. Garland SJ, Griffin L, and Ivanova T. Motor unit discharge rate is not associated with muscle relaxation time in sustained submaximal contractions in humans. Neurosci Lett 239: 25-28, 1997.
14. Graves AE, Kornatz KW, and Enoka RM. Older adults use a unique strategy to lift inertial loads with the elbow flexor muscles. J Neurophysiol 83: 2030-2039, 2000.
15. Grimby G, Danneskiold-Samsoe B, Hvid K, and Saltin B. Morphology and enzymatic capacity in arm and leg muscles in 78-81 year old men and women. Acta Physiol Scand 115: 125-134, 1982.
16. Hagbarth KE, Hagglund JV, Nordin M, and Wallin EU. Thixotropic behaviour of human finger flexor muscles with accompanying changes in spindle and reflex responses to stretch. J Physiol 368: 323-342, 1985.
17. Hashizume K and Kanda K. Differential effects of aging on motoneurons and peripheral nerves innervating the hindlimb and forelimb muscles of rats. Neurosci Res 22: 189-196, 1995.
18. Hicks AL, Cupido CM, Martin J, and Dent J. Twitch potentiation during fatiguing exercise in the elderly: the effects of training. Eur J Appl Physiol 63: 278-281, 1991.
19. Howard JE, McGill KC, and Dorfman LJ. Age effects on properties of motor unit action potentials: ADEMG analysis. Ann Neurol 24: 207-213, 1988.
20. Hutton RS, Kaiya K, Suzuki S, and Watanabe S. Postcontraction errors in human force production are reduced by muscle stretch. J Physiol 393: 247-259, 1987.
21. Jakobi JM and Rice CL. Motor unit properties of the elbow flexors and extensors are not affected equally with age. Med Sci Sports Exerc 33: S216, 2001.
22. Kamen G, Sison SV, Du CC, and Patten C. Motor unit discharge behavior in older adults during maximal-effort contractions. J Appl Physiol 79: 1908-1913, 1995.
23. Klein CS, Rice CL, and Marsh GD. Normalized force, activation, and coactivation in the arm muscles of young and old men. J Appl Physiol 91: 1341-1349, 2001.
24. Klein CS, Ivanova TD, Rice CL, and Garland SJ. Motor unit discharge rate following twitch potentiation in human triceps brachii muscle. Neurosci Lett 316: 153-156, 2001.
25. Klitgaard H, Mantoni M, Schiaffino S, Ausoni S, Gorza L, Laurent-Winter C, Schnohr P, and Saltin B. Function, morphology and protein expression of ageing skeletal muscle: a cross-sectional study of elderly men with different training backgrounds. Acta Physiol Scand 140: 41-54, 1990.
26. Koceja DM and Mynark RG. Comparison of heteronymous monosynaptic Ia facilitation in young and elderly subjects in supine and standing positions. Int J Neurosci 103: 1-17, 2000.
27. Laidlaw DH, Bilodeau M, and Enoka RM. Steadiness is reduced and motor unit discharge is more variable in old adults. Muscle Nerve 23: 600-612, 2000.
28. Le Bozec S and Maton B. Differences between motor unit firing rate, twitch characteristics and fibre type composition in an agonistic muscle group in man. Eur J Appl Physiol 56: 350-355, 1987.
29. McDonagh MJ, White MJ, and Davies CT. Different effects of ageing on the mechanical properties of human arm and leg muscles. Gerontology 30: 49-54, 1984.
30. Nelson RM, Soderberg GL, and Urbscheit NL. Comparison of skeletal muscle motor unit discharge characteristics in young and aged humans. Arch Gerontol Geriatr 2: 255-264, 1983.
31. Newton JP and Yemm R. Changes in the contractile properties of the human first dorsal interosseous muscle with age. Gerontology 32: 98-104, 1986.
32. Newton JP, Yemm R, and McDonagh MJ. Study of age changes in the motor units of the first dorsal interosseous muscle in man. Gerontology 34: 115-119, 1988.
33. Person RS and Kudina LP. Discharge frequency and discharge pattern of human motor units during voluntary contraction of muscle. Electroencephalogr Clin Neurophysiol 32: 471-483, 1972.
34. Petrella RJ, Cunningham DA, Vandervoort AA, and Paterson DH. Comparison of twitch potentiation in the gastrocnemius of young and elderly men. Eur J Appl Physiol 58: 395-399, 1989.
35. Rice CL, Cunningham DA, Paterson DH, and Dickinson JR. Strength training alters contractile properties of the triceps brachii in men aged 65-78 yr. Eur J Appl Physiol 66: 275-280; 1993.
36. Rice CL and Cunningham DA. Aging of the neuromuscular system: influences of gender and physical activity. In: Gender, Physical Activity and Aging, edited by Shephard RJ. Boca Raton, FL: CRC, 2002, p. 121-150.
37. Roos MR, Rice CL, and Vandervoort AA. Age-related changes in motor unit function. Muscle Nerve 20: 679-690, 1997.
38. Roos MR, Rice CL, Connelly DM, and Vandervoort AA. Quadriceps muscle strength, contractile properties, and motor unit firing rates in young and old men. Muscle Nerve 22: 1094-1103, 1999.
39. Thomas CK and del Valle A. The role of motor unit rate modulation versus recruitment in repeated submaximal voluntary contractions performed by control and spinal cord injured subjects. J Electromyogr Kinesiol 11: 217-229, 2001.
40. Vandervoort AA and McComas AJ. Contractile changes inopposing muscles of the human ankle joint with aging. J Appl Physiol 61: 361-367, 1986.