Angeline Nsenga Leunkeu

Université de Picardie Jules Verne, Amiens, Picardie, France

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Publications (10)12.88 Total impact

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    ABSTRACT: BACKGROUND: Information on altered foot pressures during ambulation would clarify how far limb deformities modify walking patterns in cerebral palsy (CP), and whether such data can inform prognosis and guide rehabilitation. OBJECTIVE: To compare patterns of plantar pressures during walking between children with CP and their able-bodied (AB) peers. METHODS: Twenty-five children/adolescents (10 with hemiplegia, 5 with diplegia, and 10 AB, respective ages 13.0 ± 1.9, 13.0 ± 0.6 and 14.0 ± 0.7 years) walked a 12 m line at a self-selected speed. Spatio-temporal parameters and peak in-shoe plantar pressures were recorded for both feet, using the Parotec analysis system. RESULTS: Walking speeds (m·-1) differed significantly between groups (0.65 ± 0.13, hemiplegia, 0.93 ± 0.22 diplegia and 1.26 ± 0.05 AB), with shorter stride lengths in CP. Contact time, double support time and step duration were also shorter in hemiplegia. Plantar pressures differed substantially and consistently between AB and CP, with increased medial heel pressures in hemiplegia, and reduced hallux and lateral heel pressures but increased lateral, medial mid-foot and first metatarsal pressures in diplegia. CONCLUSIONS: Substantial alterations in spatio-temporal parameters (greater in hemiplegia than in diplegia) and plantar pressure distribution reflect attempts to compensate for poor stability of posture in CP. Further study of these adaptive changes holds clinical promise in providing data relevant to the design of orthotics, determinations of prognosis and the planning of neurorehabilitation.
    No preview · Article · Oct 2014 · Neurorehabilitation
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    ABSTRACT: BACKGROUND: Gait cycle and pressure distribution patterns can now be recorded quite simply and reproducibly with inexpensive in-sole pressure recorders. However, it is not known whether such readings are sufficiently stable to provide useful information in monitoring children with spastic hemiplegic cerebral palsy (HCP). OBJECTIVE: The aim of this study was to asses the reproducibility of gait cycle and plantar pressure in HCP. METHODS: Fourteen children with HCP (Gross Motor Function Classification System level I or II) undertook two walking trials (4 x 12 meters at self-selected speeds) with a one-week inter-test interval. Spatio-temporal gait cycle parameters and peak plantar pressures were measured at each visit, using Parotec in-shoe pressure sensors. RESULTS: In the unaffected limb, satisfactory reproducibility was found for measurements of velocity, step frequency, time of double support, and step duration, but not for step amplitude or contact time. However, in the affected limb, only velocity and step duration showed moderate reproducibility. Likewise, all of 8 pressure measurements were reproducible for the unaffected limb, but pressures for the affected limb were only consistent at 4 sites (metatarsals 4-5, lateral heel, lateral mid-foot and hallux). CONCLUSIONS: Since plantar pressures are unstable only in the affected limb, the cause of variation is likely immediate spasm during movement of this limb rather than a more permanent change of posture. Some spatio-temporal parameters and plantar pressure readings have sufficient stability in both unaffected and affected limbs to allow their use when evaluating gait and planning therapy for children with HCP.
    No preview · Article · Sep 2014 · Neurorehabilitation
  • Roy J Shephard · Angeline Nsenga Leunkeu · Said Ahmaide

    No preview · Article · Dec 2012 · Archives of physical medicine and rehabilitation
  • Angeline Nsenga Leunkeu · Roy J Shephard · Said Ahmaidi
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    ABSTRACT: Nsenga Leunkeu A, Shephard RJ, Ahmaidi S. Six-minute walk test in children with cerebral palsy Gross Motor Function Classification System levels I and II: reproducibility, validity, and training effects. OBJECTIVES: To assess the reproducibility and validity of the 6-minute walk test (6MWT) with gas collection, and to evaluate effectiveness of a walking program in children with cerebral palsy (CP). DESIGN: Assessment and controlled training study. SETTING: Rehabilitation service. PARTICIPANTS: Children/adolescents with CP (N=24; 12 boys, 12 girls; mean age, 14.2±2.0y, Gross Motor Function Classification System levels I and II). INTERVENTION: After a cycle-ergometer stress test and the 6MWT, subjects were assigned to training (n=12, 40min of moderate walking exercise 3 times per week for 8wk) or a matched control group (n=12). MAIN OUTCOME MEASURES: Peak oxygen consumption (V̇o(2)peak), peak ventilation, peak heart rate, and 6MWT distance. RESULTS: Test-retest correlations for the 6MWT were good (V̇o(2)peak: r=.90, P<.001, intraclass correlation coefficient [ICC]=.85; peak ventilation: r=.88, P<.001, ICC=.83; peak heart rate: r=.86, P<.001, ICC=.82; distance walked: r=.87, P=.007, ICC=.80). Mean scores for the 6MWT also closely matched corresponding cycle-ergometer data. Significant improvements in 6MWT V̇o(2)peak, peak ventilation, and peak heart rate were found after 8 weeks of training (P<.05). CONCLUSIONS: The 6MWT appears reproducible and valid relative to cycle-ergometer assessments of cardiorespiratory responses, and offers a simple method of clinical assessment. An 8-week moderate walking program improves the cardiopulmonary fitness of children with CP, as measured by 6MWT.
    No preview · Article · Jun 2012 · Archives of physical medicine and rehabilitation
  • Angeline Nsenga Leunkeu · Said Ahmaidi
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    ABSTRACT: The aim of the study was to document the longitudinal changes from one year to the next in knee extensor muscle strength and function and in cardiorespiratory demand during an isometric test in children with cerebral palsy (CP). Ten children with CP (GMFC I and II) and ten able-bodied children underwent a quadriceps strength and endurance assessment on an isokinetic dynamometer. Maximal voluntary isometric torque in the children with CP in the initial test was significantly lower than in controls (p=0.0007) and did not change significantly over the year. No significant difference was found between the two groups for the initial static endurance measure (p=0.93); it did not change significantly after one year in the children with CP (p=0.74). Oxygen cost was significantly greater in the group with CP than in the control group (p< 0.01) and there was a further significant increase in the oxygen cost for the CP group 12 months later (p<0.01). Ventilation and heart rate at exhaustion were also significantly lower in children with CP than controls in the initial test (p=0.0001 and p=0.009, respectively). The persisting muscle weakness and the increase in oxygen cost over time may in part have resulted from inactivity and misuse of muscle. Secondary adaptive soft tissue changes affecting the development of muscle may prevent the increases in strength and endurance normally associated with growth and development.
    No preview · Article · Jan 2012 · Isokinetics and exercise science
  • Angeline Nsenga Leunkeu · Daniel J Keefer · Miladi Imed · Said Ahmaidi
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    ABSTRACT: The purpose of this investigation was to determine whether changes in surface electromyography (EMG) data during an isometric muscle protocol, in combination with maximal voluntary isometric force, provide information on fatigue occurrence and exercise limitation in children with cerebral palsy. Twelve children with cerebral palsy and 10 age-matched controls completed an assessment of quadriceps muscle fatigue on an isokinetic device with surface EMG measurements, during a sustained isometric contraction at 50% of the maximal voluntary isometric force. The EMG data collected in participants with cerebral palsy suggest that muscle fatigue occurred sooner in children with cerebral palsy relative to the age-matched controls. However, the results demonstrate that no difference was found in time to exhaustion between the able-bodied and participants with cerebral palsy. These contrasting results may be the result of spasticity and co-contraction during maximal testing, which may play an important role in exercise limitation in children with cerebral palsy.
    No preview · Article · Sep 2009 · Journal of child neurology
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    Angeline Nsenga Leunkeu · Mathieu Gayda · Anil Nigam · Noël Lecoutre · Said Ahmaidi
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    ABSTRACT: The aims of this study were to: 1) study the cardiopulmonary responses during exhaustive isometric contraction in cerebral palsy (CP) children vs. apparently normal (AN) children 2) to study the relationship between muscle endurance and maximal O2 uptake (peak VO2) in CP children. Eight CP children (GMFC 1 to 2) and 8 AN children underwent a graded cycle exercise test and a quadriceps force and endurance assessment with cardiopulmonary measurement on an isokinetic dynamometer. During isometric contraction, muscle endurance did not differ between the groups but a higher O2 uptake was shown in the CP group. Moreover in this group, peak VO2 was correlated with muscle strength (R = 0.77, P < 0.05) and endurance (R = 0.68, P < 0.05). Cerebral palsy children have a higher O2 uptake during isometric endurance testing despite a lower absolute isometric force but their quadriceps endurance is not impaired after normalization with muscle mass and time. Additionally, quadriceps strength and endurance in CP children were in relationship with their peak VO2. This higher O2 uptake is probably due to coactivation and/or cocontraction during exhaustive quadriceps isometric contraction.
    Full-text · Article · Jan 2009 · Isokinetics and exercise science
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    A Nsenga Leunkeu · M Gayda · N Lecoutre · S Ahmaidi

    Full-text · Article · Jan 2006 · Neuropediatrics
  • A Nsenga Leunkeu · T Lelard · PL Doutrellot · S Ahmadi

    No preview · Article · Jan 2006 · Neuropediatrics
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    A. Nsenga Leunkeu · M. Gayda · A. Merzouk · A. Temfemo · N. Lecoutre · S. Ahmaidi
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    ABSTRACT: Introduction. – The aim of this study is to assess the aerobic capacity and the skeletal muscle function (force and muscular endurance of quadriceps muscle) in children with cerebral palsy (CP) compared with healthy children.Synthesis of facts. – In children with CP, the aerobic capacity during exercise is lower compared with healthy children in association with an impaired maximal isometric force and endurance of the quadriceps muscle.Conclusion. – Children with CP have a lower aerobic capacity and an impaired skeletal muscle function compared with healthy children.
    Full-text · Article · Oct 2005 · Science & Sports