Abstract
The present study examined whether the mechanomyogram (MMG) could assess the fatigue-related changes in muscle mechanical properties during cycle exercise. In eight male subjects, the MMG signals were measured in vastus lateralis and rectus femoris by electret condenser microphones. It was found that the integrated MMG (iMMG) showed non linear increase against workload during continuous, incremental cycle exercise and the onset of abrupt changes in iMMG coincided with the ventilatory threshold (VT). Specifically, iMMG in vastus lateralis showed a significant decrement in the rate of increase against workload above VT, reflecting the fatigue-induced impairment of contractile properties of the fibers of active motor units. These results suggest that the MMG measured by electret condenser microphone could be practically used to retrieve the fatigue-related changes in muscle mechanical properties during cycle exercise.
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Bichler E, Celichowski J (2001) Changes in the properties of mechanomyographic signals and in the tension during the fatigue test of rat medial gastrocnemius muscle motor units. J Electromyogr Kinesiol 11:387–394. doi:10.1016/S1050-6411(01)00025-6
Bull AJ, Housh TJ, Johnson GO, Perry SR (2000) Electromyographic and mechanomyographic responses at critical power. Can J Appl Physiol 25:262–270
Davis JA, Frank MH, Whipp BJ, Wasserman K (1979) Anaerobic threshold alterations caused by endurance training in middle-aged men. J Appl Physiol 46:1039–1046
Davis JA, Vodak P, Wilmore JH, Vodak J, Kurtz P (1976) Anaerobic threshold and maximal aerobic power for three modes of exercise. J Appl Physiol 41:544–550
Ericson MO, Nisell R, Arborelius UP, Ekholm J (1985) Muscular activity during ergometer cycling. Scand J Rehabil Med 17:53–61
Gobbo M, Cè E, Diemont B, Esposito F, Orizio C (2006) Torque and surface mechanomyogram parallel reduction during fatiguing stimulation in human muscles. Eur J Appl Physiol 97:9–15. doi:10.1007/s00421-006-0134-8
Housh TJ, Perry SR, Bull AJ, Johnson GO, Ebersole KT, Housh DJ et al (2000) Mechanomyographic and electromyographic responses during submaximal cycle ergometry. Eur J Appl Physiol 83:381–387. doi:10.1007/s004210000315
Kimura T, Hamada T, Ueno LM, Moritani T (2003) Changes in contractile properties and neuromuscular propagation evaluated by simultaneous mechanomyogram and electromyogram during experimentally induced hypothermia. J Electromyogr Kinesiol 13:433–440. doi:10.1016/S1050-6411(03)00062-2
Kimura T, Hamada T, Watanabe T, Maeda A, Oya T, Moritani T (2004) Mechanomyographic responses in human biceps brachii and soleus during sustained isometric contraction. Eur J Appl Physiol 92:533–539. doi:10.1007/s00421-004-1147-9
Madeleine P, Ge HY, Jaskólska A, Farina D, Jaskólski A, Arendt-Nielsen L (2006) Spectral moments of mechanomyographic signals recorded with accelerometer and microphone during sustained fatiguing contractions. Med Biol Eng Comput 44:290–297. doi:10.1007/s11517-006-0036-2
Moritani T, Kimura T, Hamada T, Nagai N (2005) Electrophysiology and kinesiology for health and disease. J Electromyogr Kinesiol 15:240–255. doi:10.1016/j.jelekin.2005.01.001
Moritani T, Nagata A, deVries HA, Muro M (1981) Critical power as a measure of physical work capacity and anaerobic threshold. Ergonomics 24:339–350. doi:10.1080/00140138108924856
Orizio C (1993) Muscle sound: bases for the introduction of a mechanomyographic signal in muscle studies. Crit Rev Biomed Eng 21:201–243
Orizio C, Diemont B, Esposito F, Alfonsi E, Parrinello G, Moglia A et al (1999) Surface mechanomyogram reflects the changes in the mechanical properties of muscle at fatigue. Eur J Appl Physiol 80:276–284. doi:10.1007/s004210050593
Orizio C, Perini R, Veicsteinas A (1989) Changes of muscular sound during sustained isometric contraction up to exhaustion. J Appl Physiol 66:1593–1598
Rodriquez AA, Agre JC, Franke TM, Swiggum ER, Curt JT (1996) Acoustic myography during isometric fatigue in postpolio and control subjects. Muscle Nerve 19:384–387. doi :10.1002/(SICI)1097-4598(199603)19:3<384::AID-MUS19>3.0.CO;2-S
Stokes M, Blythe M (2001) Muscle Sounds. Medintel Medical Intelligence Oxford, UK
Stout JR, Housh TJ, Johnson GO, Evetovich TK, Smith DB (1997) Mechanomyography and oxygen consumption during incremental cycle ergometry. Eur J Appl Physiol 76:363–367. doi:10.1007/s004210050262
Wasserman K, Beaver WL, Whipp BJ (1990) Gas exchange theory and the lactic acidosis (anaerobic) threshold. Circulation 81:II14–II30
Wasserman K, Whipp BJ, Koyal SN, Beaver WL (1973) Anaerobic threshold and respiratory gas exchange during exercise. J Appl Physiol 35:236–243
Watakabe M, Mita K, Akataki K, Itoh Y (2001) Mechanical behaviour of condenser microphone in mechanomyography. Med Biol Eng Comput 39:195–201. doi:10.1007/BF02344804
Weir JP, Ayers KM, Lacefield JF, Walsh KL (2000) Mechanomyographic and electromyographic responses during fatigue in humans: influence of muscle length. Eur J Appl Physiol 81:352–359. doi:10.1007/s004210050054
Yoshitake Y, Moritani T (1999) The muscle sound properties of different muscle fiber types during voluntary and electrically induced contractions. J Electromyogr Kinesiol 9:209–217. doi:10.1016/S1050-6411(98)00035-2
Yoshitake Y, Shinohara M, Ue H, Moritani T (2002) Characteristics of surface mechanomyogram are dependent on development of fusion of motor units in humans. J Appl Physiol 93:1744–1752
Yoshitake Y, Ue H, Miyazaki M, Moritani T (2001) Assessment of lower-back muscle fatigue using electromyography, mechanomyography, and near-infrared spectroscopy. Eur J Appl Physiol 84:174–179. doi:10.1007/s004210170001
Zwarts MJ, Keidel M (1991) Relationship between electrical and vibratory output of muscle during voluntary contraction and fatigue. Muscle Nerve 14:756–761. doi:10.1002/mus.880140810
Acknowledgments
This study was supported by a Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (05J01968 and 18300230). TK is supported by Research Fellowship for Young Scientists from the Japan Society for the Promotion of Science.
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Kimura, T., Fujibayashi, M., Tanaka, S. et al. Mechanomyographic responses in quadriceps muscles during fatigue by continuous cycle exercise. Eur J Appl Physiol 104, 651–656 (2008). https://doi.org/10.1007/s00421-008-0816-5
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DOI: https://doi.org/10.1007/s00421-008-0816-5