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Recherche sur l'Asthme et autres troubles de le respiration
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Renforce les muscles respiratoires
Comme vous inspirez contre une résistance, les
muscles respiratoires travaillent ainsi plus durement ; ce stimulus
d'exercice induit des améliorations sur la capacité et
sur l'efficacité métabolique des muscles respiratoires
(Sharpe et d'autres., observations non publiées).
Respiration
améliorée en 3 semaines
Les séances requièrent juste 5 minutes
d'exercice par jour et les avantages sont perçus par les
patients 3 semaines après avoir commencé les
séances (McConnell et al.., 1998)
Soulage les
symptômes de l'asthme
Des tests sous contrôle, sur des sujets
sélectionnés au hasard et souffrant d'asthme léger
ou modéré, le POWERbreathe a amélioré la
force des muscles respiratoires de 11% en moyenne en seulement 3
semaines (McConnell et al., 1998).
Le travail spécifique sur les muscles respiratoires
a montré qu'il pouvait soulager les symptômes de l'asthme
en améliorant la fonction pulmonaire, aboutissant à la
réduction de médication et une chute des hospitalisations
(Weiner et al., 1992)
Soulage
les symptômes de la dyspnée et autres troubles de la
respiration
La dyspnée est une caractéristique
commune de beaucoup de désordres respiratoires. Sa source peut
être respiratoire, cardiovasculaire, neuromusculaire ou
même psychologique. La faiblesse des muscles respiratoires a
été identifiée comme un facteur contribuant
à la perception de la dyspnée (Killian, 1998)
L'entraînement des muscles respiratoires a
démontré qu'il augmentait leur force, leur
résistance à la fatigue et, le plus important encore,
réduit la dyspnée d'effort. (Lisboa, 1994; Copestake
& McConnell, 1995; Lisboa, 1997; McConnell et al., 1998)
Reduction de la dyspnée d'effort a été
démontrée sur une population âgée en bonne
santé (Copestake & McConnell, 1995), asthmatiques (McConnell
et al., 1998) et sur des patients souffrant de bronchopneumopathie
chronique obstructive. (Lisboa et al., 1994, 1997)
Preuve de
l'augmentation de l'endurance sur des patients souffrant de BPCO (
Bronchopneumopathie chronique obstructive)
Des tests sous contrôle, sur des sujets
sélectionnés au hasard, souffrant de bronchopneumopathie
chronique obstructive, le POWERbreathe a amélioré la
force des muscles respiratoires de 55 % et leur endurance de 86 %.
(Newall et al., 1998)Inspiratory
muscle training has improved inspiratory muscle function in the
following conditions:
Lésion de la moelle épinière
(Huldtgren et al., 1980, Gross et al., 1980)
Mucoviscidose (Sawyer et al., 1993)
Insuffisance cardiaque chronique (Cahalin et al., 1997,
Mancini et al., 1995)
Maladie Neuromusculaire incluant RM (Foglio et al.,
1994), dystrophie musculaire de Duchenne (Wanke et al., 1994)
Greffés du coeur / poumon (Ambrosino et al., 1996)
Entretien de la
fonction pulmonaire corticoïde use
Les corticoïdes sont utilisés pour traiter un
grand nombre d'affections, mais des réductions significatives de
la force des muscles respiratoires ont été
documentées et cela assez vite lors de traitement par des
corticoïdes oraux. after an acute bout of oral corticosteroid
treatment. La recherche a montré que l'exercice des muscles
respiratoires effectué simultanément au traitement, peut
éliminer la chute de la force des muscles respiratoires,
maintenant donc la fonction pulmonaire pendant l'utilisation de
corticoïdes. (Weiner et al., 1995)
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Résumé
de recherche sur la performance sportive
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Proven to enhance inspiratory muscle strength and endurance in athletes
In athletes, POWERbreathe training has elicited
improvements in strength by 31.2% and endurance by 27.8% (Caine &
McConnell, 1998) Proven
to improve athletic performance
Research has shown that the inspiratory muscles have such a
huge task to perform that they can 'steal' blood from our exercising
limbs to supplement their work (Harms, C. 2000 'Effect of skeletal
muscel demand on cardiovascular function' Med.Sci.Sports Exerc. 32 (1):
94-99) The effect of this is to limit the performance of those limb
muscles - making exercise feel harder and impairing performance.
New studies have shown that specific inspiratory muscle
training improves efficiency of the inspiratory muscles (Sharpe &
McConnell, 1998)
By 'overloading' your inspiratory muscles using tried and
proven principles of resistance training, their strength, power and
endurance improves (Romer et al., 2001b)
Studies have shown that time trial performance improves in
elite rowers (Volianitis et al., 2001a) and cyclists (Romer et al.,
2001a) by as much as 4.6% - That slashes almost 3 minutes off a 40km
cycling time trial and gives a winning margin of more than 60m in a
2000m rowing race!
Used
as a warm-up, POWERbreathe boosts your inspiratory muscle performance
Research has shown that a standard warm-up fails to prepare
the inspiratory muscles for the rigours of exercise (Volianitis et al.,
1999). Laboratory trials show that a POWERbreathe warm-up significantly
improves rowing performance and reduces breathlessness in competitive
rowers (Volianitis et al., 2001b)
Inspiratory
performance improves in 4 weeks
Within a few days your inspiratory muscles will feel
stronger, within 3 weeks you will feel less breathless and within 4
weeks your performance will improve (Caine & McConnell, 1998;
Volianitis et al., 2001a; Romer et al., 2001)
Using
POWERbreathe for 30 breaths twice a day will improve breathing
POWERbreathe has undergone rigorous and systematic testing
to identify the
most effective training regimen (Caine & McConnell, 1998)
The '30 breaths twice a day' training regimen is specially
designed to provide the optimum conditions to improve your breathing
power (Romer et al., 2001b)
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Inspiratory
muscle training improves rowing performance
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VOLIANITIS, S., A. K. MCCONNELL, Y. KOUTEDAKIS, L. MCNAUGHTON, K.
BACKX, and D. A. JONES. Inspiratory muscle training improves rowing
performance. Med. Sci. Sports Exerc., Vol. 33, No. 5, 2001, pp. 803-809.
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Purpose: To investigate the effects of a
period of resistive inspiratory muscle training (IMT) upon rowing
performance.
Methods: Performance was appraised in 14 female competitive rowers
at the commencement and after 11 wk of inspiratory muscle training on a
rowing ergometer by using a 6-min all-out effort and a 5000-m trial.
IMT consisted of 30 inspiratory efforts twice daily. Each effort
required the subject to inspire against a resistance equivalent to 50%
peak inspiratory mouth pressure (PImax ) by using an inspiratory muscle
training device. Seven of the rowers, who formed the placebo group,
used the same device but performed 60 breaths once daily with an
inspiratory resistance equivalent to 15% PImax.
Results: The inspiratory muscle strength
of the training group increased by 44 6 25 cm H2 O (45.3 6 29.7%)
compared with only 6 6 11 cm H2 O (5.3 6 9.8%) of the placebo group (P
, 0.05 within and between groups). The distance covered in the 6-min
all-out effort increased by 3.5 6 1.2% in the training group compared
with 1.6 6 1.0% in the placebo group (P , 0.05).
The time in the 5000-m trial decreased by 36 6 9 s (3.1 6 0.8%) in the
training group compared with only 11 6 8 s (0.9 6 0.6%) in the placebo
group (P , 0.05). Furthermore, the resistance of the training group to
inspiratory muscle fatigue after the 6-min all-out effort was improved
from an 11.2 6 4.3% deficit in PImax to only 3.0 6 1.6% (P , 0.05) pre-
and post-intervention, respectively.
Conclusions: IMT improves rowing performance on the 6-min all-out
effort and the 5000-m trial.
Key Words: RESPIRATORY MUSCLE TRAINING,
PERFORMANCE ENHANCEMENT, INSPIRATORY MOUTH PRESSURE, RESPIRATORY
FATIGUE, DYSPNOEA
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For full research document,
>>> Téléchargez
le fichier pdf (79Kb) <<<
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Specific respiratory warm-up improves rowing
performance and exertional dyspnoea
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VOLIANITIS, S., A. K. MCCONNELL, Y. KOUTEDAKIS, and D. A. JONES.
Specific respiratory warm-up improves rowing performance and exertional
dyspnea. Med. Sci. Sports Exerc., Vol. 33, No. 7, 2001, pp. 1189-1193.
Purpose: The purpose of this study was
a) to compare the effect of three different warm-up protocols upon
rowing performance and perception of dyspnoea, and b) to
identify the functional significance of a respiratory warm-up.
Methods: A group of well-trained club
rowers (N 5 14) performed a 6-min all-out rowing simulation (Concept
II). We examined differences in mean power output and dyspnoea measures
(modified CR-Borg scale) under three different conditions: after a
submaximal rowing warm-up (SWU), a specific rowing warm-up (RWU), and a
specific rowing warm-up with the addition of a respiratory warm-up
(RWUplus) protocol.
Results: Mean power output during the
6-min all-out rowing effort increased by 1.2% after the RWUplus
compared with that obtained after the RWU (P , 0.05) which, in turn,
was by 3.2% higher than the performance after the SWU (P , 0.01).
Similarly, after the RWUplus, dyspnoea was 0.6 6 0.1 (P, 0.05) units of
the Borg scale lower compared with the dyspnoea after the RWU and 0.8 6
0.2 (P , 0.05) units lower than the dyspnoea after the SWU.
Conclusion: This data suggests that a
combination of a respiratory warm-up protocol together with a specific
rowing warm-up is more effective than a specific rowing warm-up or a
submaximal warm-up alone as a preparation for rowing performance.
Key Words: WARM-UP, PERFORMANCE
ENHANCEMENT, RESPIRATORY SENSATION, INSPIRATORY MOUTH PRES-SURE,
RESPIRATORY FATIGUE
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For full research document,
>>> Téléchargez le
fichier pdf (64 Kb) <<<
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Inspiratory
muscle fatigue in trained cyclists: effects of inspiratory muscle
training
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ROMER, L. M., A. K. MCCONNELL, and D. A. JONES. Inspiratory muscle
fatigue in trained cyclists: effects of inspiratory muscle training.
Med. Sci. Sports Exerc., Vol. 34, No. 5, pp. 785-792, 2002.
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Purpose: This study
evaluated the influence of simulated 20- and 40-km time trials upon
postexercise inspiratory muscle function of trained competitive
cyclists. In addition, we examined the influence of specific
inspiratory muscle training (IMT) upon the responses observed.
Methods: Using a double-blind
placebo-controlled design, 16 male cyclists (mean _ SEM V _ O2max 64 _
2 mL·kg _1 ·min _1 ) were assigned randomly to either an
experimental (IMT) or sham-training control (placebo) group. Maximum
static and dynamic inspiratory muscle function was assessed immediately
pre- and_2, 10, and 30 min post-simulated 20- and 40-km time trials
before and after 6-wk of IMT or sham-IMT.
Results: Maximum inspiratory mouth
pressure (P0 ) measured within 2 min of completing the 20- and 40-km
time trial rides was reduced by 18% and 13%, respectively, and remained
below pre-exercise values at 30 min. The 20- and 40-km time trials
induced a reduction in inspiratory flow rate at 30% P0 by 14% and 6% in
the IMT group versus 13% and 7% for the placebo group, and also
remained below pre-exercise values at 30 min. There was also a
significant slowing of inspiratory muscle relaxation rate
post-exercise; these trends were almost completely reversed by 30 min
post-exercise. Significant improvements in 20- and 40-km time trial
performance were seen (3.8 _ 1.7% and 4.6 _ 1.9%, respectively; P _
0.05) and post-exercise reductions in muscle function were attenuated
with IMT.
Conclusion: This data supports existing
evidence that there is significant global inspiratory muscle fatigue
after sustained heavy endurance exercise. Furthermore, the present
study provides new evidence that performance enhancements observed
after IMT are accompanied by a decrease in inspiratory muscle fatigue.
Key Words: CYCLING, ERGOGENIC AID,
RESPIRATORY MUSCLE
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For full research document
>>> Téléchargez
le fichier pdf (961 Kb) <<<
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