Effect of Additional Respiratory Muscle Endurance Training in Young Well- Trained Swimmers

International audienceWhile some studies have demonstrated that respiratory muscle endurance training (RMET) improves performances during various exercise modalities, controversy continues about the transfer of RMET effects to swimming performance. The objective of this study was to analyze the added effects of respiratory muscle endurance training (RMET; normocapnic hyperpnea) on the respiratory muscle function and swimming performance of young well-trained swimmers. Two homogenous groups were recruited: ten swimmers performed RMET (RMET group) and ten swimmers performed no RMET (control group). During the 8-week RMET period, all swimmers followed the same training sessions 5-6 times/week. Respiratory muscle strength and endurance , performances on 50-and 200-m trials, effort perception , and dyspnea were assessed before and after the intervention program. The results showed that ventilatory function parameters , chest expansion, respiratory muscle strength and endurance, and performances were improved only in the RMET group. Moreover, perceived exertion and dyspnea were lower in the RMET group in both trials (i.e., 50-and 200-m). Consequently , the swim training associated with RMET was more effective than swim training alone in improving swimming performances. RMET can therefore be considered as a worthwhile ergogenic aid for young competitive swimmers

Impact des troubles liés à l'obésité sur la qualité de vie et la dépense énergétique

L'obésité est une pathologie qui augmente le risque de dévelopement d'anomalies métaboliques et autres co-morbidités. De part le déconditionnement physique qu'elle entraîne, elle dégrade l'efficience énergétique et mécanique, lors des activités physiques de faible intensité comme la marche. L'objectif de ce travail de thèse a donc été de déterminer et de quantifier l'impact des troubles liés à l'obésité sur la perception de la qualité de vie et de la dépense énergétique (DE), au travers de deux projets intitulés Obénergie et Obéaccéléro. Dans le projet Obénergie, la DE et la qualité de vie ont été étudiées, chez 69 sujets atteints d'obésité, au début et à l'issue de 6 mois de programme combinant la réalisation de 10000 pas par jour à des conseils diététiques. Ainsi, nos résultats ont montré que l'obésité morbide détériore l'aspect physique de la qualité de vie, augmente le risque de dépression et la dépense énergétique totale. Toutefois, notre programme combiné a permis d'améliorer les indices de l'obésité et la qualité de vie. Dans le projet Obéaccéléro, nous avons testé un nouvel accéléromètre pour mesurer la DE chez des sujets normo-pondérés et obèses. Quel que soit le groupe étudié, cet accéléromètre surestime la DE par rapport à un système de calorimétrie indirecte, sur l'ensemble de l'épreuve. Toutefois, une forte corrélation et concordance existent entre les deux systèmes de mesure. L'accéléromètre fournit une méthode de quantification simple et objective de la dépense énergétique.Obesity is a complex disease, which increases the risk of developing metabolic disorders and other co-morbidities. Due to physical deconditionning, obesity deteriorates mechanical and energetic efficiency in low intensity physical activity, such as walking. The aim of this thesis was to identify and quantify the impact of obesity-related disorders on Health-Related Quality Of Life (HRQOL) and energy expenditure (EE), through two projects : Obénergie and Obéaccéléro. In Obénergie, DE and HRQOL were studied in 69 obese subjects, at baseline and after 6 months of daily walking (10,000 steps for day) associated with diet advice. Our results showed that morbidly obesity reduced physical aspect of HRQOL, but increased daily energy expenditure and the risk of depression. However, our combining program improved obesity indices and quality of life. In Obéaccéléro, we tested a new accelerometer to measure EE, upon healthy and obese sujects. In both groups, our accelerometer overestimated EE, compared to indirect calorimetry, in all combined activities. A strong correlation and agreement were observed between these two systems. Accelerometer is a tool that quantifies EE in objective and simple terms.ROUEN-BU Lettres (764512101) / SudocSudocFranceF

Hemodynamic adjustments during breath-holding in trained divers

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Ventilatory function in breath-hold divers: effect of glossopharyngeal insufflation

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Effect of additional respiratory muscle endurance training in young well-trained swimmers.

International audienceWhile some studies have demonstrated that respiratory muscle endurance training (RMET) improves performances during various exercise modalities, controversy continues about the transfer of RMET effects to swimming performance. The objective of this study was to analyze the added effects of respiratory muscle endurance training (RMET; normocapnic hyperpnea) on the respiratory muscle function and swimming performance of young well-trained swimmers. Two homogenous groups were recruited: ten swimmers performed RMET (RMET group) and ten swimmers performed no RMET (control group). During the 8-week RMET period, all swimmers followed the same training sessions 5-6 times/week. Respiratory muscle strength and endurance, performances on 50- and 200-m trials, effort perception, and dyspnea were assessed before and after the intervention program. The results showed that ventilatory function parameters, chest expansion, respiratory muscle strength and endurance, and performances were improved only in the RMET group. Moreover, perceived exertion and dyspnea were lower in the RMET group in both trials (i.e., 50- and 200-m). Consequently, the swim training associated with RMET was more effective than swim training alone in improving swimming performances. RMET can therefore be considered as a worthwhile ergogenic aid for young competitive swimmers. Key PointsRespiratory muscle endurance training improves the performance.Respiratory muscle endurance training improves the ventilatory function parameters, chest expansion, respiratory muscle strength and endurance.Respiratory muscle endurance training decreases the perceived exertion and dyspnea.Respiratory muscle endurance training can be considered as a worthwhile ergogenic aid for young competitive swimmers

Effect of Additional Respiratory Muscle Endurance Training in Young Well- Trained Swimmers

International audienceWhile some studies have demonstrated that respiratory muscle endurance training (RMET) improves performances during various exercise modalities, controversy continues about the transfer of RMET effects to swimming performance. The objective of this study was to analyze the added effects of respiratory muscle endurance training (RMET; normocapnic hyperpnea) on the respiratory muscle function and swimming performance of young well-trained swimmers. Two homogenous groups were recruited: ten swimmers performed RMET (RMET group) and ten swimmers performed no RMET (control group). During the 8-week RMET period, all swimmers followed the same training sessions 5-6 times/week. Respiratory muscle strength and endurance , performances on 50-and 200-m trials, effort perception , and dyspnea were assessed before and after the intervention program. The results showed that ventilatory function parameters , chest expansion, respiratory muscle strength and endurance, and performances were improved only in the RMET group. Moreover, perceived exertion and dyspnea were lower in the RMET group in both trials (i.e., 50-and 200-m). Consequently , the swim training associated with RMET was more effective than swim training alone in improving swimming performances. RMET can therefore be considered as a worthwhile ergogenic aid for young competitive swimmers

Comparison of Specific Prediction Equations to Estimate Peak Oxygen Uptake in Obese Women

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