Int J Sports Med 2007; 28(12): 999-1005
DOI: 10.1055/s-2007-964996
Training & Testing

© Georg Thieme Verlag KG Stuttgart · New York

Differential Reflex Adaptations Following Sensorimotor and Strength Training in Young Elite Athletes

W. Taube1 , N. Kullmann1 , C. Leukel1 , O. Kurz1 , F. Amtage2 , A. Gollhofer1
  • 1Department of Sport Science, University of Freiburg, Germany
  • 2Department of Neurology and Clinical Neurophysiology, University of Freiburg, Germany
Further Information

Publication History

accepted after revision December 1, 2006

Publication Date:
11 May 2007 (online)


In young elite athletes the influence of a sensorimotor training (SMT = balance training) on strength, jump height and spinal reflex excitability was compared with adaptations induced by strength training (ST). Seventeen athletes were randomly assigned to either a SMT or a ST group. Before and after 6 weeks of training, maximal isometric strength (MVC) and rate of force development (RFDmax) were determined. Changes in jump height and EMG activity were assessed during squat- (SJ), countermovement- (CMJ) and drop-jump (DJ). To evaluate neural adaptations, H-reflex recruitment was recorded at rest and during dynamic activation of the plantarflexors following stance perturbation. MVC was enhanced after ST but not influenced by SMT. RFDmax was not affected by any training. Both SMT and ST significantly improved jump performance in SJ, CMJ, and DJ. Maximum H-reflex to maximum M-wave ratios (Hmax/Mmax-ratios) at rest remained unchanged. During stance perturbation, Hmax/Mmax-ratios were significantly reduced following SMT whereas ST augmented Hmax/Mmax-ratios (p < 0.05). In contrast to other studies, no changes in RFD were found. This may be explained by methodological and/or training specific differences. However, both SMT and ST improved jump performance in well trained young athletes but induced opposing adaptations of the Hmax/Mmax-ratio when measured during dynamic contractions. These adaptations were task-specific as indicated by the unchanged reflexes at rest. Decreased spinal excitability following SMT was interpreted as the attempt to improve movement control, whereas augmented excitability following ST accounts for the effort to enhance motoneuron output. Functionally, our results emphasise that SMT is not only beneficial for prevention and rehabilitation but also improves athletic performance.


  • 1 Aagaard P. Training-induced changes in neural function.  Exerc Sport Sci Rev. 2003;  31 61-67
  • 2 Aagaard P, Simonsen E B, Andersen J L, Magnusson P, Dyhre-Poulsen P. Increased rate of force development and neural drive of human skeletal muscle following resistance training.  J Appl Physiol. 2002;  93 1318-1326
  • 3 Aagaard P, Simonsen E B, Andersen J L, Magnusson P, Dyhre-Poulsen P. Neural adaptation to resistance training: changes in evoked V-wave and H-reflex responses.  J Appl Physiol. 2002;  92 2309-2318
  • 4 Bahr R, Lian O, Bahr I A. A twofold reduction in the incidence of acute ankle sprains in volleyball after the introduction of an injury prevention program: a prospective cohort study.  Scand J Med Sci Sports. 1997;  7 172-177
  • 5 Brooke J D, Cheng J, Collins D F, McIlroy W E, Misiaszek J E, Staines W R. Sensori-sensory afferent conditioning with leg movement: gain control in spinal reflex and ascending paths.  Prog Neurobiol. 1997;  51 393-421
  • 6 Bruhn S, Kullmann N, Gollhofer A. The effects of a sensorimotor training and a strength training on postural stabilisation, maximum isometric contraction and jump performance.  Int J Sports Med. 2004;  25 56-60
  • 7 Caine D J, Nassar L. Gymnastics injuries.  Med Sport Sci. 2005;  48 18-58
  • 8 Capaday C, Stein R B. Difference in the amplitude of the human soleus H reflex during walking and running.  J Physiol. 1987;  392 513-522
  • 9 Caraffa A, Cerulli G, Projetti M, Aisa G, Rizzo A. Prevention of anterior cruciate ligament injuries in soccer. A prospective controlled study of proprioceptive training.  Knee Surg Sports Traumatol Arthrosc. 1996;  4 19-21
  • 10 Chalmers G R, Knutzen K M. Soleus H-reflex gain in healthy elderly and young adults when lying, standing, and balancing.  J Gerontol A Biol Sci Med Sci. 2002;  57 B321-B329
  • 11 Demorest R A, Landry G L. Training issues in elite young athletes.  Curr Sports Med Rep. 2004;  3 167-172
  • 12 Dietz V. Human neuronal control of automatic functional movements: interaction between central programs and afferent input.  Physiol Rev. 1992;  72 33-69
  • 13 Earles D R, Dierking J T, Robertson C T, Koceja D M. Pre- and post-synaptic control of motoneuron excitability in athletes.  Med Sci Sports Exerc. 2002;  34 1766-1772
  • 14 Gauffin H, Tropp H, Odenrick P. Effect of ankle disk training on postural control in patients with functional instability of the ankle joint.  Int J Sports Med. 1988;  9 141-144
  • 15 Granacher U, Gollhofer A, Strass D. Training induced adaptations in characteristics of postural reflexes in elderly men.  Gait Posture. 2006;  24 459-466
  • 16 Gruber M, Gollhofer A. Impact of sensorimotor training on the rate of force development and neural activation.  Eur J Appl Physiol. 2004;  92 98-105
  • 17 Gruber M, Gruber S, Taube W, Schubert M, Beck S, Gollhofer A. Differential effects of ballistic versus sensorimotor training on rate of force development and neural activation in humans.  J Strength Cond Res. 2007;  21 274-282
  • 18 Häkkinen K, Alen M, Kallinen M, Newton R U, Kraemer W J. Neuromuscular adaptation during prolonged strength training, detraining and re-strength-training in middle-aged and elderly people.  Eur J Appl Physiol. 2000;  83 51-62
  • 19 Häkkinen K, Alen M, Kraemer W J, Gorostiaga E, Izquierdo M, Rusko H, Mikkola J, Hakkinen A, Valkeinen H, Kaarakainen E, Romu S, Erola V, Ahtiainen J, Paavolainen L. Neuromuscular adaptations during concurrent strength and endurance training versus strength training.  Eur J Appl Physiol. 2003;  89 42-52
  • 20 Hoff J, Gran A, Helgerud J. Maximal strength training improves aerobic endurance performance.  Scand J Med Sci Sports. 2002;  12 288-295
  • 21 Hultborn H, Meunier S, Pierrot-Deseilligny E, Shindo M. Changes in presynaptic inhibition of Ia fibres at the onset of voluntary contraction in man.  J Physiol. 1987;  389 757-772
  • 22 Komi P V. Training of muscle strength and power: interaction of neuromotoric, hypertrophic, and mechanical factors.  Int J Sports Med. 1986;  7 (Suppl 1) 10-15
  • 23 Lagerquist O, Zehr E P, Docherty D. Increased spinal reflex excitability is not associated with neural plasticity underlying the cross-education effect.  J Appl Physiol. 2006;  100 83-90
  • 24 Llewellyn M, Yang J F, Prochazka A. Human H-reflexes are smaller in difficult beam walking than in normal treadmill walking.  Exp Brain Res. 1990;  83 22-28
  • 25 Mynark R G, Koceja D M. Comparison of soleus H-reflex gain from prone to standing in dancers and controls.  Electroencephalogr Clin Neurophysiol. 1997;  105 135-140
  • 26 Mynark R G, Koceja D M. Down training of the elderly soleus H reflex with the use of a spinally induced balance perturbation.  J Appl Physiol. 2002;  93 127-133
  • 27 Nielsen J, Crone C, Hultborn H. H-reflexes are smaller in dancers from The Royal Danish Ballet than in well-trained athletes.  Eur J Appl Physiol. 1993;  66 116-121
  • 28 Nielsen J, Crone C, Sinkjaer T, Toft E, Hultborn H. Central control of reciprocal inhibition during fictive dorsiflexion in man.  Exp Brain Res. 1995;  104 99-106
  • 29 Oishi K, Kimura M, Yasukawa M, Yoneda T, Maeshima T. Amplitude reduction of H-reflex during mental movement simulation in elite athletes.  Behav Brain Res. 1994;  62 55-61
  • 30 Perot C, Goubel F, Mora I. Quantification of T- and H-responses before and after a period of endurance training.  Eur J Appl Physiol. 1991;  63 368-375
  • 31 Sale D G, MacDougall J D, Upton A R, McComas A J. Effect of strength training upon motoneuron excitability in man.  Med Sci Sports Exerc. 1983;  15 57-62
  • 32 Schieppati M. The Hoffmann reflex: a means of assessing spinal reflex excitability and its descending control in man.  Prog Neurobiol. 1987;  28 345-376
  • 33 Schneider C, Capaday C. Progressive adaptation of the soleus H-reflex with daily training at walking backward.  J Neurophysiol. 2003;  89 648-656
  • 34 Schomburg E D. Spinal sensorimotor systems and their supraspinal control.  Neurosci Res. 1990;  7 265-340
  • 35 Segal R L, Wolf S L. Operant conditioning of spinal stretch reflexes in patients with spinal cord injuries.  Exp Neurol. 1994;  130 202-213
  • 36 Solopova I A, Kazennikov O V, Deniskina N B, Levik Y S, Ivanenko Y P. Postural instability enhances motor responses to transcranial magnetic stimulation in humans.  Neurosci Lett. 2003;  337 25-28
  • 37 Taube W, Schubert M, Gruber M, Beck S, Faist M, Gollhofer A. Direct corticospinal pathways contribute to neuromuscular control of perturbed stance.  J Appl Physiol. 2006;  101 420-429
  • 38 Trimble M H, Koceja D M. Modulation of the triceps surae H-reflex with training.  Int J Neurosci. 1994;  76 293-303
  • 39 Trimble M H, Koceja D M. Effect of a reduced base of support in standing and balance training on the soleus H-reflex.  Int J Neurosci. 2001;  106 1-20
  • 40 Tropp H, Askling C, Gillquist J. Prevention of ankle sprains.  Am J Sports Med. 1985;  13 259-262
  • 41 Verhagen E, van der Beek A, Twisk J, Bouter L, Bahr R, Van Mechelen W. The effect of a proprioceptive balance board training program for the prevention of ankle sprains: a prospective controlled trial.  Am J Sports Med. 2004;  32 1385-1393
  • 42 Voigt M, Chelli F, Frigo C. Changes in the excitability of soleus muscle short latency stretch reflexes during human hopping after 4 weeks of hopping training.  Eur J Appl Physiol. 1998;  78 522-532
  • 43 Wolpaw J R. The complex structure of a simple memory.  Trends Neurosci. 1997;  20 588-594
  • 44 Wolpaw J R, Tennissen A M. Activity-dependent spinal cord plasticity in health and disease.  Annu Rev Neurosci. 2001;  24 807-843
  • 45 Yang J F, Whelan P J. Neural mechanisms that contribute to cyclical modulation of the soleus H-reflex in walking in humans.  Exp Brain Res. 1993;  95 547-556
  • 46 Zehr E P. Considerations for use of the Hoffmann reflex in exercise studies.  Eur J Appl Physiol. 2002;  86 455-468

Wolfgang Taube

Department of Sport Science
University of Freiburg

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