Cardiopulmonary exercise data during quadriceps isometric contraction sustained to fatigue in children with cerebral palsy

Leunkeu, Angeline Nsenga; Gayda, Mathieu; Nigam, Anil; Lecoutre, N.; Ahmaidi, Saïd

doi:10.3233/ies-2009-0328

Cited by 7 publications

(5 citation statements)

References 21 publications

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“…One diff erence between the 2 studies was that Lundberg [ 10 ] claimed to have established a true maximal response using commonly accepted criteria [ 12 ] , whereas we reported what seems a more realistic criterion of peak values for children with CP. However, as others [ 13 ] also have noted, the V . O 2 peak proved a stable criterion for both able-bodied subjects and non-exercising children with CP.…”

mentioning

confidence: 66%

“…All subjects underwent 2 progressive cycle ergometer tests (Ergometer 824 E, Monark Exercise AB, Kroonsväg 1, S-780 50 Vansbro, Sweden) separated by an interval of 1 week. The fi rst test was for familiarization and habituation [ 19 ] , to check the protocol and to determine which children needed to have their feet strapped to the pedals with Velcro [ 13 ] ; this proved necessary for 6 subjects with CP (3 in the exercise group and 3 controls). The defi nitive cardio-respiratory test (CRT) began with a 5-min warm up, followed by 6-12 min at an increasing intensity of exercise and a pedalling rate of 50 rpm paced by metronome (an initial power output of 30 W, increased by 15 W every minute to exhaustion).…”

Section: Cardio-respiratory Exercise Testingmentioning

confidence: 99%

“…O 2peak ) in children with CP [ 13 , 18 ] . This population usually reaches lower test scores than their peers who are without disability [ 4 , 13 , 17 ] and one practical issue is whether the peak aerobic power of individuals with CP is hampered by impaired peripheral skeletal muscle function [ 13 ] ; this could be one reason why there has as yet been little research on the response to aerobic training in individuals with CP. One study [ 19 ] examined the eff ects of uphill walking in patients with diplegic CP, but fi tness assessments were based on arm ergometry, and thus scores may not have refl ected the changes in fi tness induced by what was predominantly a leg-based training program [ 19 ] .…”

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confidence: 99%

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Aerobic Training in Children with Cerebral Palsy

2012

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Rehabilitation is a major goal for children with cerebral palsy, although the potential to enhance cardio-respiratory fitness in such individuals remains unclear. This study thus compared current cardio-respiratory status between children with cerebral palsy and able-bodied children, and examined the ability to enhance the cardio-respiratory fitness of children with cerebral palsy by cycle ergometer training. 10 children with cerebral palsy (Gross Motor Function Classification System levels I and II) participated in thrice-weekly 30 min cycle ergometer training sessions for 8 weeks (mean age: 14.2±1.9 yrs). 10 additional subjects with cerebral palsy (mean age: 14.2±1.8 yrs) and 10 able-bodied subjects (mean age: 14.1±2.1 yrs) served as controls, undertaking no training. All subjects undertook a progressive cycle ergometer test of cardio-respiratory fitness at the beginning and end of the 8-week period. Cardio-respiratory parameters [oxygen intake V˙O2), ventilation V ˙ E) and heart rate (HR)] during testing were measured by Cosmed K4 b gas analyzer. The children with cerebral palsy who engaged in aerobic training improved their peak oxygen consumption, heart rate and ventilation significantly (p<0.05) and they also showed a non-significant trend to increased peak power output. In conclusion, children with cerebral palsy can benefit significantly from cardio-respiratory training, and such training should be included in rehabilitation programs.

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confidence: 66%

Section: Cardio-respiratory Exercise Testingmentioning

confidence: 99%

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Aerobic Training in Children with Cerebral Palsy

2012

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“…Skeletal muscle fatigue was measured for the quadriceps on an isokinetic apparatus using a methodology described previously. 17 Earlier studies 4,17 have shown the safety of isometric strength and muscle endurance testing in children with cerebral palsy. Control participants were seated and positioned at knee and hip angles of 60 and 120 , respectively.…”

Section: Methodsmentioning

confidence: 99%

“…All the tests were preceded by a warm-up of about 5 minutes on the Cybex. 17 The children were then strapped at chest and knee levels to maintain these angular positions. For all able-bodied children, the right leg was used for testing.…”

Section: Methodsmentioning

confidence: 99%

Electromyographic (EMG) Analysis of Quadriceps Muscle Fatigue in Children With Cerebral Palsy During a Sustained Isometric Contraction

et al. 2009

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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.

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