Assessment of physical activity among rural Senegalese adolescent girls: Influence of age, sexual maturation, and body composition

Bénéfice, Éric; Garnier, Denis; Ndiaye, Gabriel Birame

doi:10.1016/s1054-139x(00)00201-9

Cited by 25 publications

(32 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Specifically, they did not seem to lengthen their sleep time in order to recover from fatigue, effort or high-level activity during the day. Such behaviour would have been plausible in view of the heavy burden of activities reported in previous studies (Bénéfice & Cames, 1999;Bénéfice et al, 2001a). However, it has been reported that in rural areas their time schedule is less constrained than in the cities: adolescent rural girls apparently slept a longer time than migrant girls working as maids (Garnier & Bénéfice, 2001).…”

Section: Discussionmentioning

confidence: 93%

“…In epidemiological studies, accelerometer counts are considered to accurately and reliably reflect general activity (Trost, 2001). We had already used accelerometry to evaluate physical activity during the day (Bénéfice & Cames, 1999;Bénéfice et al, 2001a). The main purpose here was to examine the effects of environmental or nutritional factors on the sleep of adolescents.…”

Section: Discussionmentioning

confidence: 99%

“…Spurr & Reina (1988) demonstrated that during a summer day-camp, moderately malnourished boys were able to increase their level of activity, but they could not sustain their effort for more than 2 h. In the adolescents studied here, a previous study reported a significant effect of the nutritional state (BMI) on their total activity volume. High BMI girls were also more active during the night and the day than low BMI girls (Bénéfice et al, 2001a). It is thus tempting to hypothesize that malnourished girls need a longer time to fully recover after effort than normal girls, and this is reflected by a longer sleep duration.…”

Section: Discussionmentioning

confidence: 99%

“…They need to be helped by their daughters. However, sharing of tasks within the household according to the competence and fitness of the members is likely to occur (Bénéfice et al, 2001a). Allowing the frailer girls to sleep longer is an effective means of alleviating their efforts.…”

Section: Discussionmentioning

confidence: 99%

“…Physical activity was thus quantitatively assessed using an electronic accelerometer and was monitored during three consecutive rounds from 1997 to 1999. Some results have already been published (Bénéfice & Cames, 1999;Bénéfice et al, 2001a).…”

Section: Study Areamentioning

confidence: 99%

See 4 more Smart Citations

Nutritional status, growth and sleep habits among Senegalese adolescent girls

2004

View full text Add to dashboard Cite

Objective: To study the relation between sleep habits, nutritional status, growth and maturation in a group of African adolescent girls. The main hypothesis to be tested was that sleep length could be an effective way to spare energy, and thus malnourished girls sleep longer than normal girls. Design: Three repeated yearly surveys (1997)(1998)(1999)) on a subsample of girls drawn from a larger study cohort on growth at adolescence. Setting: The Niakhar district in the central part of Senegal. Subject: In total, 40 girls were initially drawn. Missing girls were replaced at each round by girls having the same characteristics and belonging to the same cohort. Intervention: At each round, data on pubertal development (breast stages and occurrence of menarche), growth and nutritional status were collected. Adolescents wore an accelerometer for three or four consecutive nights and days at each round. Results: At the beginning of the survey, girls were 13.370.5 y old. They were under international reference values in weight and height. Their mean sleep duration was 8.570.9 h. Their puberty status did not influence their sleep habits; however, they slept more in March than in June, which was related to the seasonal change in daylight. There was a significant relation between body mass index and sleep habits: thinner girls slept a longer time and more quietly than the more corpulent girls. Conclusion: The nutritional status of these girls influenced their sleep habits: this may have been either a direct causal relation or a consequence of a protective attitude on the part of the mothers towards the frailer girls. Sponsorship: The R024 'Epidémiologie et Prévention' of the IRD (France) and the Nestlé Foundation.

show abstract

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

See 3 more Smart Citations

Nutritional status, growth and sleep habits among Senegalese adolescent girls

2004

View full text Add to dashboard Cite

show abstract

High levels of habitual physical activity in west african adolescent girls and relationship to maturation, growth, and nutritional status: Results from a 3‐year prospective study

Bénéfice

Garnier

Ndiaye

2001

American J Hum Biol

Self Cite

View full text Add to dashboard Cite

This study examines energy expenditure and physical activity levels for a sample of 40 adolescent girls of the Sereer ethnic group of rural Senegal. The girls were 13.3 +/- 0.5 years at the start of the study (June 1997) and were followed annually for the next 2 years during puberty. Data collected during each round included: 1) pubertal status (as assessed by breast development and occurrence of menarche); 2) selected anthropometric dimensions (weight, stature, arm circumference, and six skinfolds); and 3) physical activity levels quantitatively assessed using CSA accelerometers. During rounds 1 and 3, activity was also qualitatively reported by direct minute-by-minute observations. A food consumption survey was performed once during the 3(rd) round, using an individual food weighing method. Girls of this sample had high levels of energy expenditure with daily physical activity levels (PALs) ranging from 1.70 to 1.85 multiples of basal metabolic rate. Energy intakes were, on average, sufficient to meet energy and protein requirements, although micronutrient deficiencies were likely to exist. Activity levels declined with age between the 1(st) and 3(rd) rounds. Stepwise regression analyses showed that stature was negatively correlated with both total daily and day-time activity, whereas the body mass index was positively associated with this measure. Pubertal status and subcutaneous fatness were not significant predictors of activity levels. The contribution of these adolescent girls to the everyday tasks of the household was considerable. They spent more than 3 hours 30 minutes per day in domestic duties.

show abstract

Pooled energy budget and human life history

Reiches

Ellison

Lipson

et al. 2009

American J Hum Biol

View full text Add to dashboard Cite

Human life history contains a series of paradoxes not easily explained by classical life history theory. While overall reproductive output is higher than in related primates, juvenile growth is slower and age-specific reproductive rates decline faster with age. A simple energetic model would predict that growth and reproductive rates should be positively correlated and that reproductive effort should not decelerate with age. The pattern of negative correlations in humans suggests the presence of trade-offs among peak reproductive rate, childhood growth, and reproductive rate at older ages. To address this puzzle, we propose a synthesis of reproductive ecology and behavioral ecology focused on intra-and inter-somatic energy transfers. This integration includes three concepts: the mother as final common pathway through which energy must pass to result in offspring; a distinction between direct and indirect reproductive effort, proposing the latter as a novel net energy allocation category relative to growth and direct reproductive effort; and a pooled energy budget representing the energetic contributions and withdrawals of all members of a breeding community. Individuals at all reproductive life stages are considered in light of their contributions to the pooled energy budget.

show abstract

Assessment of physical activity among rural Senegalese adolescent girls: Influence of age, sexual maturation, and body composition

Cited by 25 publications

References 24 publications

Nutritional status, growth and sleep habits among Senegalese adolescent girls

Nutritional status, growth and sleep habits among Senegalese adolescent girls

High levels of habitual physical activity in west african adolescent girls and relationship to maturation, growth, and nutritional status: Results from a 3‐year prospective study

Pooled energy budget and human life history

Contact Info

Product

Resources

About