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Background: Measurement of haematological parameters has been historically helpful in the diagnosis of many diseases in endurance sportsmen. The modifications of these parameters during endurance race have not yet been evaluated in many African countries. Objectives: To determine haematological values before and immediately after a half-marathon event, as well as within 24 hours after the race and to analyze the changes observed. Methods: A cross-sectional study was conducted from 10 to 21 August 2018 at Brazzaville, Congo. All measurements were confined to 76 male participants

Background: Rare are the studies which treated the effect of training and successive fights of karate on haemodynamic and blood lactate concentrations responses. Objectives: To evaluate and analyze the aerobic capacity of elite Congolese karate athletes, as well as their haemodynamic and blood lactate concentrations responses changes during Ruffier test and stimulated competition. Methods: Twelve karate athletes (6 seniors and 6 juniors) took part in the study. These karate athletes were selected within the national karate teams (senior and junior) of Congo-Brazzaville. Anthropometric, bioenergetic and haemodynamic (HR, SBP, DBP) parameters and blood lactate [La] concentrations were measured at rest, immediately after the end of Ruffier test and each fight (n = 3). Results: Peak aerobic power (PAP) and maximum oxygen uptake (VO 2 max) values averaged 437 ± 23 watts and 57.61 ± 2.2 ml/kg/mn, values varying as function as age division (senior vs junior). The recovery index was 5.4 ± 3.4 for juniors and 6.8 ± 3.2 for seniors. SBP, HR and [La] concentrations increased significantly during fights, compared to the resting values. HR max was 182.3 ± 1.6 bpm (89% theoretical HR max) for seniors and 182.0 ± 13.5 bpm (86% theoretical HR max) for juniors. Peak [La] concentrations were 10.3 ± 1.5 mmol/l for seniors and 10.8 ± 1.2 mmol/l for juniors. Conclusion: Congolese karate athletes call upon high levels of the How to cite this paper: Moulongo, J.

<p>The place of a balanced diet in sport has proven to be very important. The objective of this study was to assess the nutritional knowledge of athletes in the Brazzaville athletics league. Our study was conducted on a sample of 50 athletes including 29 Boys and 21 Girls from the events combined with an average age of 23.50 ± 3.32 years and 21.33 ± 9.41 years respectively. The method used was the Abbreviated Sports Nutrition Knowledge Questionnaire (ANSKQ) to collect data related to nutrition knowledge from athletes. The results showed ignorance of ranking products for carbohydrate, fat, and protein gain respectively by 62.06% of Boys and 47.61% of Girls, 51.72% of Boys 80.95% of Girls, and 51 72% of Boys versus 61.90% of Girls). Similarly, 51.72% of Boys and 52.38% of Girls ignored the percentages of a balanced diet. Knowledge of what to eat to perform was low in 62.06% of boys and 66.66% of girls. The type of ration established was based on traditional experience in 65.51% of boys and 42.85% of girls. The level of nutrition knowledge was low in 51.72% of boys and 52.38% of girls. This justified the non-respect of meal intake and meal times before sport practice respectively in 82.75% of boys and 95.23% of girls. Hence the non-participation in the composition of the menus of 100% of Boys and 100% of Girls. In conclusion, Congolese athletes have a very low level of knowledge in the field of nutrition. However, a low level of knowledge in nutrition is associated with a negative impact on sport performance.</p><p>La place de l’alimentation équilibrée dans le domaine sportif est avérée très importante. L’objectif de cette étude était d’évaluer les connaissances en nutrition des athlètes de la ligue d’athlétisme de Brazzaville. Notre étude a été menée sur un échantillon de 50 athlètes dont 29 Garçons et 21 Filles des épreuves confondues avec un âge moyen respectivement de 23,50 ±3,32 ans et 21,33 ±9,41 ans. La méthode utilisée était le Questionnaire Abrégé sur la Connaissance en Nutrition Sportive (ANSKQ) afin de collecter les données liées aux connaissances en nutrition auprès des athlètes. Les résultats ont montré l’ignorance de classer les produits pour le gain glucidique, lipidique et protéique respectivement par 62, 06% des Garçons et 47,61% des Filles, 51,72 % des Garçons 80,95% des Filles, et 51,72% des Garçons versus 61,90% des Filles). De même, 51,72% des Garçons et 52,38% des Filles ont ignoré les pourcentages d’une alimentation équilibrée. La connaissance de ce qu’il faut manger pour performer était faible chez 62,06% des Garçons et 66,66% des filles. Le type de ration établie était basé sur l’expérience traditionnelle chez 65,51% des Garçons et 42,85% des Filles. Le niveau de connaissance en nutrition était faible chez 51,72% des Garçons et 52,38% des Filles. Ce qui a justifié le non-respect des prises des repas et des heures repas avant la pratique sportive respectivement chez 82,75% des Garçons et 95,23% des Filles. D’où la non-participation à la composition des menus de 100% des Garçons et 100%des Filles. En conclusion, les athlètes congolais ont un niveau de connaissance très bas dans le domaine de nutrition. Or, le faible niveau de connaissance en nutrition est associé à un impact négatif sur la performance sportive. </p><p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/soc/0022/a.php" alt="Hit counter" /></p>

Context and objective. Lipid changes in obese children in Black Africa are poorly documented. The objectives of the present study to determine the lipid profile in obese adolescents and to analyze the associations between some anthropometric and lipid parameters. Methods. The cross-sectional study was conducted in Brazzaville among 82 adolescents aged 11 to 18 years, divided into 45 obese, 17 overweight, and 20 normal weight subjects. Measurements of height, weight, waist circumference, subscapular and tricipital skin folds were taken. Blood samples were taken to determine total cholesterol, LDL-cholesterol, HDL-cholesterol, and triglyceride concentrations. Results. Lipid concentrations in obese adolescents were significantly higher than those in normal weight subjects: total cholesterol, 1.70 vs. 1.59g/L; LDL-cholesterol, 1.03 vs. 0.88g/L; triglycerides, 1.18 vs. 0.86. However, HDL-cholesterol levels were significantly lower: 0.42 vs 0.51g/L. A positive correlation was found between waist circumference/height ratio and HDL cholesterol (r=0.75; p=0.031). Conclusion. Our results highlight the need to strengthen the management of obese children to prevent potential risk factors for cardiovascular disease in adulthood. Contexte & objectif. Les modifications lipidiques chez les enfants obèses en Afrique noire sont peu documentées. Les objectifs de la présente étude étaient de déterminer chez les adolescents obèses le profil lipidique, et analyser les associations entre quelques paramètres anthropométriques et lipidiques. Méthodes. L’étude transversale a été réalisée à Brazzaville auprès de 82 adolescents âgés de 11 à 18 ans, répartis en 45 sujets obèses, 17 en état de surpoids et 20 poids normal. Des mesures de la taille, du poids, du tour de taille, des plis cutanés sous-scapulaire et tricipital ont été effectuées. Des prélèvements sanguins ont permis de déterminer les concentrations en cholestérol total, cholestérol-LDL, cholestérol-HDL et triglycérides. Résultats. Les concentrations lipidiques notées chez les adolescents obèses étaient significativement supérieures à celles des sujets de poids normal : cholestérol total, 1,70 vs 1,59g/L ; cholestérol-LDL, 1,03 vs 0,88g/L ; triglycérides, 1,18 vs 0,86. Par contre, celles du cholestérol-HDL étaient significativement inférieures : 0,42 vs 0,51g/L. Une corrélation positive a été retrouvée entre le rapport tour de taille/taille et le cholestérol-HDL (r=0,75 ; p=0,031). Conclusion. Nos résultats soulignent la nécessité de renforcer la prise en charge des enfants obèses afin de prévenir les facteurs de risque potentiels des maladies cardiovasculaires à l’âge adulte.