B. Ashworth, Preliminary trial of carisoprodol in multiple sclerosis, Practitioner, vol.192, pp.540-542, 1964.

G. J. Bastien, N. C. Heglund, and B. Schepens, The double contact phase in walking children, Journal of Experimental Biology, vol.206, issue.17, pp.2967-2978, 2003.
DOI : 10.1242/jeb.00494

B. C. Bennett, M. F. Abel, A. Wolovick, T. Franklin, P. E. Allaire et al., Center of Mass Movement and Energy Transfer During Walking in Children With Cerebral Palsy, Archives of Physical Medicine and Rehabilitation, vol.86, issue.11, pp.2189-2194, 2005.
DOI : 10.1016/j.apmr.2005.05.012

B. Brouwer, K. Parvataneni, and S. J. Olney, A comparison of gait biomechanics and metabolic requirements of overground and treadmill walking in people with stroke, Clinical Biomechanics, vol.24, issue.9, pp.729-734, 2009.
DOI : 10.1016/j.clinbiomech.2009.07.004

L. K. Brunton, R. , and C. L. , Fatigue in cerebral palsy: A critical review, Developmental Neurorehabilitation, vol.44, issue.1, pp.54-62, 2011.
DOI : 10.1097/BPO.0b013e318093f4c3

G. A. Cavagna, Force platforms as ergometers, Journal of Applied Physiology, vol.39, issue.1, pp.174-179, 1975.
DOI : 10.1152/jappl.1975.39.1.174

G. A. Cavagna, M. G. Kaneko, P. A. Willems, M. A. Legramandi, H. et al., Mechanical work and efficiency in level walking and running doi: 10.1113/jphysiol Pendular energy transduction within the step in human walking, J. Physiol. J. Exp. Biol, vol.268, issue.205, pp.467-481, 1977.

J. T. Choi and A. J. Bastian, Adaptation reveals independent control networks for human walking, Nature Neuroscience, vol.14, issue.8, pp.1055-1062, 1930.
DOI : 10.1126/science.1079641

J. Collett, H. Dawes, K. Howells, C. Elsworth, H. Izadi et al., Anomalous centre of mass energy fluctuations during treadmill walking in healthy individuals, Gait & Posture, vol.26, issue.3, pp.400-406, 2007.
DOI : 10.1016/j.gaitpost.2006.10.002

J. Crosbie, A. A. Alhusaini, C. M. Dean, and R. B. Shepherd, Plantarflexor muscle and spatiotemporal gait characteristics of children with hemiplegic cerebral palsy: an observational study, Developmental Neurorehabilitation, vol.18, issue.4, pp.114-118, 2011.
DOI : 10.1191/0269215504cr735oa

C. Detrembleur, A. Van-den-hecke, and F. Dierick, Motion of the body centre of gravity as a summary indicator of the mechanics of human pathological gait, Gait & Posture, vol.12, issue.3, pp.243-250, 2000.
DOI : 10.1016/S0966-6362(00)00081-3

J. M. Donelan, R. Kram, and A. D. Kuo, Mechanical work for step-tostep transitions is a major determinant of the metabolic cost of human walking, J. Exp. Biol, vol.205, pp.3717-3727, 2002.

J. M. Donelan, R. Kram, and A. D. Kuo, Simultaneous positive and negative external mechanical work in human walking, Journal of Biomechanics, vol.35, issue.1, pp.117-124, 2002.
DOI : 10.1016/S0021-9290(01)00169-5

M. H. Eames, A. Cosgrove, and R. Baker, Comparing methods of estimating the total body centre of mass in three-dimensions in normal and pathological gaits, Human Movement Science, vol.18, issue.5, pp.637-646, 1999.
DOI : 10.1016/S0167-9457(99)00022-6

S. T. Fonseca, K. G. Holt, L. Fetters, and E. Saltzman, Dynamic resources used in ambulation by children with spastic hemiplegic cerebral palsy: relationship to kinematics, energetics, and asymmetries, Phys. Ther, vol.84, pp.344-354, 2004.

M. L. Harris-love, L. W. Forrester, R. F. Macko, K. H. Silver, and G. V. Smith, Hemiparetic Gait Parameters in Overground Versus Treadmill Walking, Neurorehabilitation and Neural Repair, vol.15, issue.2, pp.105-112, 1177.
DOI : 10.1053/jscd.2000.6607

S. Hesse, M. Konrad, and D. Uhlenbrock, Treadmill walking with partial body weight support versus floor walking in hemiparetic subjects, Archives of Physical Medicine and Rehabilitation, vol.80, issue.4, pp.421-427, 1999.
DOI : 10.1016/S0003-9993(99)90279-4

T. Hortobagyi, C. Herring, W. J. Pories, P. Rider, and P. Devita, Massive weight loss-induced mechanical plasticity in obese gait, Journal of Applied Physiology, vol.157, issue.5, pp.1391-1399, 2011.
DOI : 10.1111/j.1467-789X.2006.00251.x

B. J. Hsue, F. Miller, and F. C. Su, The dynamic balance of the children with cerebral palsy and typical developing during gait, Gait & Posture, vol.29, issue.3, pp.471-476, 2009.
DOI : 10.1016/j.gaitpost.2008.11.008

B. J. Hsue, F. Miller, and F. C. Su, The dynamic balance of the children with cerebral palsy and typical developing during gait. Part I: Spatial relationship between COM and COP trajectories, Gait & Posture, vol.29, issue.3, pp.465-470, 2009.
DOI : 10.1016/j.gaitpost.2008.11.007

J. M. Jasiewicz, J. H. Allum, J. W. Middleton, A. Barriskill, P. Condie et al., Gait event detection using linear accelerometers or angular velocity transducers in able-bodied and spinal-cord injured individuals, Gait & Posture, vol.24, issue.4, pp.502-509017, 2005.
DOI : 10.1016/j.gaitpost.2005.12.017

M. J. Kurz, W. A. Stuberg, and S. L. Dejong, Mechanical work performed by the legs of children with spastic diplegic cerebral palsy, Gait & Posture, vol.31, issue.3, 2010.
DOI : 10.1016/j.gaitpost.2009.12.004

S. J. Lee and J. Hidler, Biomechanics of overground vs. treadmill walking in healthy individuals, Journal of Applied Physiology, vol.104, issue.3, pp.747-755, 2006.
DOI : 10.1080/01621459.1962.10480664

D. Lundh, S. Coleman, R. , and J. , Movement deviation and asymmetry assessment with three dimensional gait analysis of both upper- and lower extremity results in four different clinical relevant subgroups in unilateral cerebral palsy, Clinical Biomechanics, vol.29, issue.4, pp.381-386, 2014.
DOI : 10.1016/j.clinbiomech.2014.02.006

D. Malatesta, L. Vismara, F. Menegoni, M. Galli, M. Romei et al., Mechanical External Work and Recovery at Preferred Walking Speed in Obese Subjects, Medicine & Science in Sports & Exercise, vol.41, issue.2, pp.426-434, 2009.
DOI : 10.1249/MSS.0b013e31818606e7

D. Malatesta, L. Vismara, F. Menegoni, G. Grugni, C. et al., Effect of obesity onset on pendular energy transduction at spontaneous walking speed: Prader-willi versus nonsyndromal obese individuals, Obesity, vol.24, issue.12, pp.586-591, 2013.
DOI : 10.1177/1545968309349927

V. Marconi, H. Hachez, A. Renders, P. L. Docquier, and C. Detrembleur, Mechanical work and energy consumption in children with cerebral palsy after single-event multilevel surgery, Gait & Posture, vol.40, issue.4, pp.633-639, 2014.
DOI : 10.1016/j.gaitpost.2014.07.014

P. E. Martin, D. E. Rothstein, and D. D. Larish, Effects of age and physical activity status on the speed-aerobic demand relationship of walking, Journal of Applied Physiology, vol.73, issue.1, pp.200-206, 1992.
DOI : 10.1152/jappl.1992.73.1.200

F. Massaad, F. Dierick, A. Van-den-hecke, and C. Detrembleur, Influence of gait pattern on the body's centre of mass displacement in children with cerebral palsy, Developmental Medicine & Child Neurology, vol.69, issue.10, pp.674-680, 2004.
DOI : 10.2106/00004623-198062030-00004

A. Matsas, N. Taylor, H. Mcburney, V. M. Matsuno, M. R. Camargo et al., Knee joint kinematics from familiarised treadmill walking can be generalised to overground walking in young unimpaired subjects Analysis of partial body weight support during treadmill and overground walking of children with cerebral palsy, Gait Posture Rev. Bras. Fisioter, vol.1199, issue.14, pp.46-53, 1590.

A. Meichtry, J. Romkes, C. Gobelet, R. Brunner, and R. Muller, Criterion validity of 3D trunk accelerations to assess external work and power in able-bodied gait, Gait & Posture, vol.25, issue.1, pp.25-32, 2007.
DOI : 10.1016/j.gaitpost.2005.12.016

M. P. Murray, G. B. Spurr, S. B. Sepic, G. M. Gardner, and L. A. Mollinger, , 1985.

, Treadmill vs. floor walking: kinematics, electromyogram, and heart rate, J. Appl. Physiol, vol.59, pp.87-91

H. T. Myrhaug, S. Ostensjo, L. Larun, J. Odgaard-jensen, and R. Jahnsen, Intensive training of motor function and functional skills among young children with cerebral palsy: a systematic review and meta-analysis, BMC Pediatrics, vol.124, issue.suppl.5, pp.292-302, 2014.
DOI : 10.1542/peds.2009-0288

S. J. Olney, P. A. Costigan, and D. M. Hedden, Mechanical Energy Patterns in Gait of Cerebral Palsied Children with Hemiplegia, Physical Therapy, vol.67, issue.9, pp.1348-1354, 1987.
DOI : 10.1093/ptj/67.9.1348

R. Palisano, P. Rosenbaum, S. Walter, D. Russell, E. Wood et al., Development and reliability of a system to classify gross motor function in children with cerebral palsy, Developmental Medicine & Child Neurology, vol.35, issue.4, pp.214-223, 1997.
DOI : 10.1001/jama.1952.02930180032007

N. Peyrot, J. B. Morin, D. Thivel, L. Isacco, M. Taillardat et al., Mechanical Work and Metabolic Cost of Walking after Weight Loss in Obese Adolescents, Medicine & Science in Sports & Exercise, vol.42, issue.10, pp.1914-1922, 2010.
DOI : 10.1249/MSS.0b013e3181da8d1e

N. Peyrot, D. Thivel, L. Isacco, J. B. Morin, P. Duche et al., Do mechanical gait parameters explain the higher metabolic cost of walking in obese adolescents?, Journal of Applied Physiology, vol.106, issue.6, pp.1763-1770, 2008.
DOI : 10.1016/S0966-6362(03)00104-8

URL : https://hal.archives-ouvertes.fr/hal-01232361

T. Pfau, T. H. Witte, and A. M. Wilson, A method for deriving displacement data during cyclical movement using an inertial sensor, Journal of Experimental Biology, vol.208, issue.13, pp.2503-2514, 2005.
DOI : 10.1242/jeb.01658

URL : http://jeb.biologists.org/content/jexbio/208/13/2503.full.pdf

S. Russell, B. Bennett, P. Sheth, A. , and M. , The Gait of Children with and Without Cerebral Palsy: Work, Energy, and Angular Momentum, Journal of Applied Biomechanics, vol.27, issue.2, pp.99-107, 2011.
DOI : 10.1123/jab.27.2.99

H. H. Savelberg, M. A. Vorstenbosch, E. H. Kamman, J. G. Van-de-weijer, and H. C. Schambardt, Intra-stride belt-speed variation affects treadmill locomotion, Gait & Posture, vol.7, issue.1, pp.26-34, 1998.
DOI : 10.1016/S0966-6362(97)00023-4

H. Stolze, J. P. Kuhtz-buschbeck, C. Mondwurf, A. Boczek-funcke, K. Johnk et al., Gait analysis during treadmill and overground locomotion in children and adults, Electroencephalography and Clinical Neurophysiology/Electromyography and Motor Control, vol.105, issue.6, pp.490-497, 1997.
DOI : 10.1016/S0924-980X(97)00055-6

A. Van-den-hecke, C. Malghem, A. Renders, C. Detrembleur, S. Palumbo et al., Mechanical Work, Energetic Cost, and Gait Efficiency in Children With Cerebral Palsy, Journal of Pediatric Orthopaedics, vol.27, issue.6, pp.643-647, 2007.
DOI : 10.1097/BPO.0b013e318093f4c3

M. M. Van-der-krogt, L. H. Sloot, and J. Harlaar, Overground versus self-paced treadmill walking in a virtual environment in children with cerebral palsy, Gait & Posture, vol.40, issue.4, pp.587-593, 2014.
DOI : 10.1016/j.gaitpost.2014.07.003

T. Warabi, M. Kato, K. Kiriyama, T. Yoshida, and N. Kobayashi, Treadmill walking and overground walking of human subjects compared by recording sole-floor reaction force, Neuroscience Research, vol.53, issue.3, pp.343-348, 2005.
DOI : 10.1016/j.neures.2005.08.005

K. L. Willoughby, K. J. Dodd, and N. Shields, A systematic review of the effectiveness of treadmill training for children with cerebral palsy, Disabil. Rehabil, vol.31, pp.10-3109, 1971.

F. Yang and Y. C. Pai, Can sacral marker approximate center of mass during gait and slip-fall recovery among community-dwelling older adults?, Journal of Biomechanics, vol.47, issue.16, 2014.
DOI : 10.1016/j.jbiomech.2014.10.027

URL : http://europepmc.org/articles/pmc4469384?pdf=render

C. Zanetti and M. Schieppati, Quiet stance control is affected by prior treadmill but not overground locomotion, European Journal of Applied Physiology, vol.1004, issue.3, pp.331-339, 2007.
DOI : 10.1007/s00421-007-0434-7