Surface rms-EMG measurement as a real time monitoring method for detecting the anaerobic threshold during a bicycle ergometer test was evaluated and compared with blood lactate and ventilatory parameters. The study group consisted of 12 healthy icehockey players. The anaerobic threshold indicated as dislinearity of increase in blood lactate level, ventilatory parameters and myoelectrical activity was observed at the work level of 300 (range 270-330) W in each case. The linearity disappeared at same time in the rms-EMG-load ratio both in working (guardriceps and gastrocnemius) and nonworking (frontalis) muscles. The rms-EMG follow-up was easier to perform than measurements of blood lactate and ventilatory parameters.
WassermannKWhippB.J.KoyalS.N. and BeaverW.L: Anaerobic threshold and respiratory gas exchange during exercise. J Appl Physiol 35:236–243, 1973.
2.
AunolaS. and RuskoH.: The anaerobic threshold measured by four different bicycle exercise tests. Scand. J. Sports Sci 4(2)49–56, 1982
3.
SahlinK.HarrisR.C.NylindB. and HultmanE: Lactate content and pH in muscle samples obtained after dynamic exercise. Phlugers Arch, 367, 143–149, 1976.
4.
SkinnerJ. S and McLellanT.H.: The transition from aerobic to anaerobic metabolism. Res Q Exercise and Sport 51: 234–248, 1980.
5.
StegmannS.UndH.KindermannW.: Bestimmung der individuellen anaeroben Schwelle bei unterschiedlich Ausdauertrainierten aufgrund des Verhaltens der Lactatkinetik wahrend der Arbeits- und Erholunsphase. Deutsche Zeitschrift fur Sportmedizin 32:213–221, 1981
6.
HelalJ. NGuezennecC. and GoubelF.: The aerobic-anaerobic transition: re-examination of the threshold concept including an electromyographic approach. Eur J Appl Physiol 56:643–6491987
7.
NagataA.MasuoM.MoritaniT. and TakayoshiY.: Anaerobic threshold determination by blood lactate and myoelectric signals. Jpn J Physiol, 31:585–597, 1981 •
8.
TeschP.A.KomiP.V.JacobsIKarlssonJ and ViitasaloJ.T.: Influence of lactate accumulation of EMG frequency spectrum during repeated concentric contractions. Acta Physiol Scand 119:61–67, 1983
9.
ViitasaloJ.LuhtanenP.RahkilaP. and RuskoH: Electromyographic activity related to aerobic and anaerobic threshold in ergometer bicycling. Acta Physiol Scand 124: 287–293, 1985
10.
DeVriesH.A.: Efficiency of electrical activity as a physiological measure of the functional state of muscle tissue. Am. J. Phys. Med 47(1)10–22, 1968
11.
HoritaT. and IshikoT.: Relationships between muscle lactate accumulation and surface EMG activities during isokinetic contractions in man. Eur.J. Appl Physiol. 56:18–23, 1987.
12.
NilssonJTeschP. and ThorstensonA.: Fatigue and EMG of repeated fast voluntary contractions in man. Acta Physiol Scand 101: 194–198, 1977
13.
RothsteinJ.DelittoA.SinacoreD. and RoseS.J: Electromyographic, Peak Torque, and Power Relationships During Isokinetic Movement. Phys Ther, 63: 926–933, 1983
14.
Birgland-RitchieB.JonesD.A.HoskingG.P. and EdwardsR.H.T: Central and peripheral fatigue in sustained maximum voluntary contractions of human quadriceps muscle. Clin Sci Mol Med 54: 609–614, 1978.
15.
RemesA.RauhalaE and HanninenO.: Fully ratified, integrated, band (FRIB-) EMG analysis in quantifying muscle activity. Development of a new field equipment. Acta Physiol Scand. Suppl. 537: 65–70, 1984
16.
SatoH.IshiiM: Evaluation of local muscular fatigue in dynamic muscular work. Jpn J Ergonom 13 :255–260, 1977.
17.
StulenFB. and De LucaCJ: Frequency parameters of the myoelectric signal as a measure of muscle conduction velocity. IEEE Trans Biomed Eng BME-28:515–523, 1981 IS. Viitasalo J.H. T and Komi P.V.: Signal charachteristics of EMG during fatigue. Europ. J. Appl. Physiol. 37: 111–121, 1977
18.
SmolanderJ.KolariP. J.Korhonen 0., and Ilmarinen R. : Aerobic and anaerobic responses to incremental exercise in thermoneutral and a hot dry enviroment. Acta Physiol Scand 128:15–21, 1986..
19.
BonenA. and BelcastroA.N.: Comparison of self-selected recovery methods on lactic acid removal rates. Medicine and Science In Sports 8: 176–178, 1976
20.
SimonG.BergA.DickhutH. HSimon-AltA. and KeulJ.Bestimmung der anaeroben Schwelle in Abhangigkeit vom Alter und von der Leistungsfahigkeit. Deutsche Zeitschrift fur Sportsmedizin 32:7–14, 1981
21.
HakkinenK. and KomiP.V.: Effects of fatigue and recovery on electromyographic and isometric force- and relaxation-time characteristics of human skeletalmuscle. Eur J Appl Physiol 55:588–596, 1986
22.
MazzeoR.S. and MarshallP: Relation between ventilatory and lactate thresholds with plasma cathecolamines. Fasets Journal 4: 50, 1988.
