Recovery kinetics throughout successive bouts of various exercises in elite cyclistsFrancois Hug
University of Nantes, Nantes Atlantic Universities, Laboratory of Motricity, Interactions, and Performance, Nantes, France
Med Sci Sports Exerc 38:2151-8. 2006
..In the present study we investigated whether a high volume of cycling training would influence the metabolic changes associated with a succession of three exhaustive cycling exercises...
- Metabolic recovery in professional road cyclists: a 31P-MRS study
Francois Hug
Department of Sport Physiology, Faculty of Sport Sciences, IFR Marey, University of the Mediteranean Aix Marseille II, Marseille, France
Med Sci Sports Exerc 37:846-52. 2005
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- Selective training-induced thigh muscles hypertrophy in professional road cyclists
Francois Hug
Laboratory of Biomechanics and Physiology, INSEP, National Institute for Sports and Physical Education, 11 Avenue du Tremblay, 75012 Paris, France
Eur J Appl Physiol 97:591-7. 2006
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- EMG threshold determination in eight lower limb muscles during cycling exercise: a pilot study
F Hug
Department of Sport Physiology, UPRES EA 3285, IFR Etienne Jules Marey, Faculty of Sport Sciences, University of Mediterranean, Marseille, France
Int J Sports Med 27:456-62. 2006
..Our results suggest that EMG (Th) determination can be used as a reliable method for studying neuromuscular adjustments in the VL of untrained individuals, but not in other lower limb muscles...
- A comparison of visual and mathematical detection of the electromyographic threshold during incremental pedaling exercise: a pilot study
Francois Hug
Laboratory of Motricity, Interactions, Performance, University of Nantes, Nantes Universities, Nantes, France
J Strength Cond Res 20:704-8. 2006
..Moreover, the use of EMG(Th) to predict ventilatory threshold occurrence could be an interesting tool for trainers who cannot use the very expensive devices needed to analyze respiratory gas exchanges...
- Interindividual variability of electromyographic patterns and pedal force profiles in trained cyclists
Francois Hug
Research Mission, Laboratory of Biomechanics and Physiology, National Institute for Sports and Physical Education, 11 Avenue du Tremblay, Paris, France
Eur J Appl Physiol 104:667-78. 2008
..Overall, these results provide additional evidence for redundancy in the neuromuscular system...
- Heterogeneity of muscle recruitment pattern during pedaling in professional road cyclists: a magnetic resonance imaging and electromyography study
Francois Hug
Laboratoire des Déterminants Physiologiques de l Activité Physique, Faculte des Sciences du Sport, Université de la Méditérannée Aix Marseille II, 163 Avenue de Luminy, Marseille, Cedex 09, France
Eur J Appl Physiol 92:334-42. 2004
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- Muscle shear elastic modulus measured using supersonic shear imaging is highly related to muscle activity level
Antoine Nordez
Laboratory Motricité, Interactions, Performance, EA 4334 University of Nantes, 25 bis Blvd Guy Mollet, BP 72206, 44322 Nantes Cedex 3, France
J Appl Physiol 108:1389-94. 2010
..Therefore, the present study represents a first step in attempting to show that supersonic shear imaging can be used to indirectly estimate muscle stress...
- Changes of pedaling technique and muscle coordination during an exhaustive exercise
Sylvain Dorel
Research Mission, Laboratory of Biomechanics and Physiology, National Institute for Sports INSEP, Paris, France
Med Sci Sports Exerc 41:1277-86. 2009
..We designed the present study to test the hypothesis that these alterations in the biomechanics of pedaling, which occur during exhaustive exercise, are linked to changes in the activity patterns of lower limb muscles...
- Electromechanical delay in biceps brachii assessed by ultrafast ultrasonography
Francois Hug
Laboratoire Motricite, Interactions, Performance EA 4334, Universite de Nantes, 25 bis boulevard Guy Mollet, BP 72206, Cedex 3, Nantes 44322, France
Muscle Nerve 43:441-3. 2011
..Electromechanical delay can be used as a model for studying the effects of neuromuscular disorders or various constraints that affect excitation-contraction coupling and/or muscle force transmission...
- Is interindividual variability of EMG patterns in trained cyclists related to different muscle synergies?
Francois Hug
University of Nantes, Laboratory Motricité, Interactions, Performance, EA 4334, 25 bis boulevard Guy Mollet, BP 72206, 44322 Nantes Cedex 3, France
J Appl Physiol 108:1727-36. 2010
..The interindividual variability of EMG patterns observed during pedaling does not represent differences in the locomotor strategy for pedaling...
- Consistency of muscle synergies during pedaling across different mechanical constraints
Francois Hug
Laboratory Motricité, Interactions, Performance, EA 4334 Univ of Nantes, 25 bis boulevard Guy Mollet, BP 72206, 44322 Nantes Cedex 3, France
J Neurophysiol 106:91-103. 2011
..Thus, our results support the hypothesis that these muscle synergies reflect a neural control strategy, with only a few timing adjustments in their activation regarding the mechanical constraints...
- Force-velocity relationship in cycling revisited: benefit of two-dimensional pedal forces analysis
Sylvain Dorel
Laboratory of Biomechanics and Physiology, Research Department, National Institute for Sports and Physical Education INSEP, Paris, France
Med Sci Sports Exerc 42:1174-83. 2010
..We also examined the ratio of effective force to the total pedal force, termed index of mechanical effectiveness (IE), in explaining differences in power between subjects...
- Reproducibility of eight lower limb muscles activity level in the course of an incremental pedaling exercise
David Laplaud
UPRES EA 3285, Déterminants Physiologiques de l Activité Physique, Institut fédératif de recherche Etienne Jules Marey, Faculte des Sciences du Sport, Universite de la Mediterranee Aix Marseille II, Marseille Cedex 9, France
J Electromyogr Kinesiol 16:158-66. 2006
..These results suggest that each subject adopt a personal muscle activation strategy in a course of an incremental cycling exercise but fatigue phenomenon can induce some variations in the most fatigable muscles (RF)...
- Intra-session repeatability of lower limb muscles activation pattern during pedaling
Sylvain Dorel
National Institute for Sports INSEP, Laboratory of Biomechanics and Physiology, F 75012 Paris, France
J Electromyogr Kinesiol 18:857-65. 2008
..Overall, the main finding of this work is the good repeatability of the EMG pattern during pedaling both in term of muscle activity level and muscle activation timing...
- No evidence of expertise-related changes in muscle synergies during rowing
Nicolas A Turpin
University of Nantes, Laboratory Motricité, Interactions, Performance EA 4334, F 44000 Nantes, France
J Electromyogr Kinesiol 21:1030-40. 2011
..Performance in rowing is more probably linked to adjustments in the mechanical output of the muscle synergies rather than to differences in the shape and timing of their activations...
- The electromyographic fatigue threshold is not a valid tool to assess muscle function
Killian Bouillard
University of Nantes, Laboratory Motricité, Interactions, Performance EA 4334, F 44000, Nantes, France
J Electromyogr Kinesiol 21:229-35. 2011
..029 and SEM=7.5% of MVC for EMG(FT) determined from MPF). The present results suggest that the EMG(FT) is not a valid tool to assess muscle function...
- Electromyographic analysis of pedaling: a review
Francois Hug
University of Nantes, Nantes Atlantic Universities, Laboratory Motricity, Interactions, Performance JE 2438, F 44000 Nantes, France
J Electromyogr Kinesiol 19:182-98. 2009
..Some research perspectives linked to pedaling performance are discussed throughout the manuscript and in the conclusion...
- Effects of a prior short simulated training session on the subsequent occurrence of ventilatory thresholds
Gaël Guilhem
National Institute for Sports INSEP, Paris, France University of Nantes, Nantes Atlantic Universities, Nantes, France
J Sci Med Sport 12:273-9. 2009
..e. higher metabolic state) after a short period of training session. Thus, doubt is cast on the pertinence of using the power output (or running speed by extension) for prescription of exercise during prolonged training sessions...
- Fatigue-related adaptations in muscle coordination during a cyclic exercise in humans
Nicolas A Turpin
University of Nantes, Laboratory Motricité, Interactions, Performance EA 4334, F 44000, Nantes, France
J Exp Biol 214:3305-14. 2011
..These results suggest that fatigue during a cyclic task preferentially induces an adaptation in muscle activity level rather than changes in the modular organization of the muscle coordination...
- Electromechanical delay revisited using very high frame rate ultrasound
Antoine Nordez
University of Nantes, UFR STAPS, Laboratoire Motricite, Interactions, Performance, 44322 Nantes Cedex 3, France
J Appl Physiol 106:1970-5. 2009
..However, they suggest a minor role of the active part of the series elastic component that needs to be confirmed by further experiments...
- Reciprocal aiming precision and central adaptations as a function of mechanical constraints
Thibault Deschamps
University of Nantes, Laboratory Motricité, Interactions, Performance EA 4334, F 44000, Nantes, France
J Electromyogr Kinesiol 21:968-73. 2011
..Put together, the present findings suggest that the cause of the observed loss of movement accuracy may probably result from more peripheral alterations such as an impairment of the afferent information processing...
- Can the electromyographic fatigue threshold be determined from superficial elbow flexor muscles during an isometric single-joint task?
Francois Hug
Laboratory Motricité, Interactions, Performance EA 4334, University of Nantes, 25 bis boulevard Guy Mollet, BP 72206, 44322, Nantes Cedex 3, France
Eur J Appl Physiol 107:193-201. 2009
..In this way, EMG(FT) should be studied from a more simple movement i.e., ideally a movement implying mainly one muscle...
- Effect of power output on muscle coordination during rowing
Nicolas A Turpin
Laboratory Motricité, Interactions, Performance EA 4334, University of Nantes, 25 bis boulevard Guy Mollet, BP 72206, 44322, Nantes Cedex 3, France
Eur J Appl Physiol 111:3017-29. 2011
..In conclusion, despite significant changes in the level of muscle activity, the global temporal and spatial organization of the motor output is very little affected by power output on a rowing ergometer...
- Characterization of passive elastic properties of the human medial gastrocnemius muscle belly using supersonic shear imaging
Olivier Maisetti
EA 4334, Laboratoire Motricite, Interactions, Performance, Universite de Nantes, UFR STAPS, 25 bis bd Guy Mollet, BP 72206, Nantes F 44000, France
J Biomech 45:978-84. 2012
..002 m; CV: 0.4%; ICC: 0.992). These findings indicate that SSI may provide an indirect estimation of passive muscle force, and highlight its clinical applicability to evaluate the passive properties of mono- and bi-articular muscles...
- Supersonic shear imaging provides a reliable measurement of resting muscle shear elastic modulus
Lilian Lacourpaille
EA 4334 Motricité, Interactions, Performance, Universite de Nantes, Nantes, France
Physiol Meas 33:N19-28. 2012
..Both the reliability and the ease of use of SSI make it a potentially interesting technique that would be of benefit to fundamental, applied and clinical research projects that need an accurate assessment of muscle mechanical properties...
- Can muscle coordination be precisely studied by surface electromyography?
Francois Hug
University of Nantes, Laboratory Motricité, Interactions, Performance EA 4334, Nantes F 44000, France
J Electromyogr Kinesiol 21:1-12. 2011
..All of this information is crucial to the proper interpretation of muscle coordination from EMG signals...
- Estimation of individual muscle force using elastography
- Killian Bouillard
Laboratory Motricité, Interactions, Performance EA 4334, University of Nantes, Nantes, France
PLoS ONE 6:e29261. 2011
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