Work-site wellness programmes in Sweden: a cross-sectional study of physical activity, self-efficacy, and health.

UNLABELLED: In Sweden, a work-site wellness programme implies reimbursing some of the expenses for health-promoting activities. Although work-site wellness programmes are readily available in Sweden, a large number of employees elect not to participate. OBJECTIVES: The aim of this study was to investigate the association of physical activity, self-reported general health assessment and self-efficacy with participation in a work-site wellness programme. STUDY DESIGN: A cross-sectional study design was used. METHODS: An online questionnaire was distributed to employees of a manufacturing company with 2500 employees in southwest Sweden. RESULTS: Those who took advantage of the work-site wellness programme assessed their general health as better and had higher assessment of physical activity. The study showed that being enlisted also implies a higher level of physical activity and general health; however, the effect sizes of these correlations were small. Self-efficacy, i.e. perceived behavioural control, was not associated with participation in the work-site wellness programme. However, self-efficacy was correlated with both general health assessment and physical activity. A regression analysis to determine explanatory contributions to the general health assessment score showed no significant contribution from participation in a work-site wellness programme, but was instead explained by perceived behavioural control and physical activity. CONCLUSIONS: Given the small effect size of the difference in physical activity between participators and non-participators in the work-site wellness programme, it is probable that only a small proportion of participators changed their health-promoting activities as a result of the work-site wellness programme.

Growth under privileged conditions of healthy Swedish infants exclusively breastfed from birth to 4-6 months: a longitudinal prospective study based on daily records of feeding.

AIM: In most studies the methodology used to study growth in relation to breastfeeding patterns cannot ensure that exclusive breastfeeding has in fact occurred since birth. The aim of this study was to investigate the growth of healthy infants in Sweden in whom exclusive breastfeeding for the first 4-6 mo was ascertained through daily feeding records and to compare the results with the World Health Organization (WHO) "12-month breastfed pooled data set" and the Euro-Growth references for exclusively breastfed infants, as well as with the National Center for Health Statistics (NCHS)/WHO reference. METHODS: 147 exclusively breastfed infants and 325 non-exclusively breastfed Swedish infants, with a birthweight of > or = 3 kg, were included. The mothers had previous breastfed at least one infant for at least 4 mo. Weight was recorded fortnightly and length monthly. RESULTS: Infants exclusively breastfed since birth showed similar growth in weight and height to that of the non-exclusively breastfed infants. During the first 6 mo of life the growth of exclusively breastfed infants was also similar to that of the infants regularly receiving formula at 12-16 wk of age, mostly in addition to breast milk. The monthly growth increments were fairly similar to those of the "WHO pooled breastfed data set" and the Euro-Growth references for exclusively breastfed infants. CONCLUSION: In an affluent society truly exclusively breastfed infants seem to have the same growth during the first half year of life as non-exclusively breastfed infants with a high breastfeeding rate.

Introduction of solids and formula to breastfed infants: a longitudinal prospective study in Uppsala, Sweden.

UNLABELLED: The introduction of solids and formula was studied among 506 breastfed infants in Uppsala, Sweden, based on daily recordings during the first year. The mothers had previously breastfed at least 1 infant for at least 4 mo. Thirty-four per cent of the infants were introduced to solids before the age of 4 mo (4-6 mo is recommended in Sweden). Accustoming the infants to solids was a lengthy process. Life-table analyses showed a median duration of 28 d from the first introduction of solids to consumption of >10 ml daily, and 46 d before the infants ate > or = 100 ml of solids in 1 d for the first time. These durations were longer the younger the infant was at the introduction of solids. Thirty-two per cent of infants given formula consumed > or = 100 ml the first time it was given, and 49% did so within I wk, regardless of infant age. CONCLUSION: Parents and healthcare personnel need to be aware that accustoming breastfed infants to solid food is a lengthy process, and that there is a strong age effect on this duration. It is also important to consider what consequences the (usually) more abrupt introduction of formula might have on breastfeeding.

Exclusive breast-feeding is rarely practised in rural and urban Morogoro, Tanzania.

OBJECTIVE: To investigate and compare feeding practices among infants of less than 7 months of age in a rural and an urban area in Tanzania. DESIGN: Cross-sectional, questionnaire-based interview of mothers and focus group discussions with extension workers and community leaders. SETTING: Eleven villages in a rural district and 10 wards in an urban district in the Morogoro region, Tanzania, west of Dar es Salaam. SUBJECTS: Probability samples of mothers with infants of less than 7 months of age from each area). RESULTS: Exclusive breast-feeding was rarely practised in either the rural or urban areas investigated. However, the urban mothers initiated breast-feeding earlier, discarded colostrum less frequently, breast-fed exclusively for a longer period, gave breast milk as the first feed more often and delayed the introduction of solid foods for longer than their rural counterparts. The rural mothers, on the other hand, breast-fed their previous infants slightly longer than the urban mothers. CONCLUSIONS: The better performance of urban mothers could be partly due to sustained breast-feeding support in hospital settings and other campaigns which may not have reached the rural areas. In both the rural and urban areas more efforts are needed to encourage exclusive breast-feeding, to avoid premature complementation and, in the case of the urban areas, to protect extended breast-feeding.

Solids and formula: association with pattern and duration of breastfeeding.

OBJECTIVES: To study changes in pattern and duration of breastfeeding associated with the introduction of solids and formula. STUDY DESIGN: Descriptive longitudinal, prospective study. SETTING: The participants were recruited from the maternity ward in the University Hospital in Uppsala, Sweden, between May 1989 and December 1992. A total of 15 189 infants were born during the period, 1 177 mother-infant pairs were found eligible for participation; 57% declined because of the perceived high workload. Study Population. Five hundred six mother-infant pairs. METHODS: Daily recordings by the mothers on infant feeding, from the first week after delivery to the second menstruation postpartum or a new pregnancy; fortnightly home visits with structured interviews by a research assistant. RESULTS: Introduction of solids was associated with no or minor changes in breastfeeding frequency and suckling duration. Breastfeeding frequency remained constant the first month after the introduction and then declined slowly, while daily suckling duration started to decline slowly when solids were introduced. Breastfeeding duration was not associated with infants' age at introduction of solids. In infants given formula, as soon as regular formula feeds started, the breastfeeding frequency and suckling duration declined swiftly. The younger an infant was at the start of regular formula feeds, the shorter the breastfeeding duration. CONCLUSIONS: Health care personnel and parents need to be aware that introduction of solids and introduction of formula can have very different consequences for breastfeeding. If the aim is to introduce other foods to breastfed infants under the protection of breast milk, it is important to realize that formula is also another food and needs to be treated as such.

Body size at birth and blood pressure among children in developing countries.

BACKGROUND: Studies in developed countries have shown that reduced fetal growth is related to raised blood pressure in childhood and adult life. Little is known about this association in developing countries, where fetal growth retardation is common. METHODS: In 1994-1995, we measured blood pressure in 1570 3-6-year-old children living in China, Guatemala, Chile, Nigeria and Sweden. We related their blood pressure to patterns of fetal growth, as measured by body proportions at birth. The children were all born after 37 weeks gestation and weighed more than 2.5 kg at birth. RESULTS: In each country, blood pressure was positively related to the child's current weight. After adjusting for this and gender, systolic pressure was inversely related to size at birth in all countries except Nigeria. In Chile, China and Guatemala, children who were proportionately small at birth had raised systolic pressure. For example, in Chile, systolic pressure adjusted for current weight increased by 4.9 mmHg (95% CI : 2.1, 7.7) for every kilogram decrease in birthweight, by 1 mmHg (95% CI : 0.4, 1.6) for every centimetre decrease in birth length, and by 1.3 mmHg (95% CI : 0.4, 2.2) for every centimetre decrease in head circumference at birth. In Sweden, systolic pressure was higher in children who were disproportionately small, that is thin, at birth. Systolic pressure increased by 0.3 mmHg (95% CI : 0.0, 0.6) for every unit (kg/m3) decrease in ponderal index at birth. These associations were independent of the duration of gestation. CONCLUSIONS: Raised blood pressure among children in three samples from China, Central and South America is related to proportionate reduction in body size at birth, which results from reduced growth throughout gestation. The relation between fetal growth and blood pressure may be different in African populations. Proportionately reduced fetal growth is the prevalent pattern of fetal growth retardation in developing countries, and is associated with chronic undernutrition among women. Improvement in the nutrition and health of girls and young women may be important in preventing cardiovascular disease in developing countries.

Breast-feeding in Europe--rationale and prevalence, challenges and possibilities for promotion.

The status reports and other information collected showed that interpretation of the data on breast-feeding prevalence and duration collected at national or regional level within European countries is difficult, since this information is not collected in every country or it is gathered under different criteria. However, there seem to be vast differences in prevalence of breast-fed children and breast-feeding duration between European countries and possibly within countries. There is a need to establish monitoring systems enabling comparability of data between countries. Assessing determinants for breast-feeding is required as well. There are a number of important consensus documents supporting breast-feeding action. These documents are related to either one or more of the following categories: health benefits of breast-feeding; recommendations regarding breast-feeding duration and exclusiveness; providing guidance on breast-feeding promotion. Current recommendation is exclusive breast-feeding for 6 months.

How exclusive is exclusive breastfeeding? A comparison of data since birth with current status data.

BACKGROUND: There is no accepted and widely used indicator for exclusive breastfeeding since birth. Indeed, the difference between 'current status' data on exclusive breastfeeding and data on 'exclusive breastfeeding since birth' is rarely recognized. We used data from a longitudinal study to examine this issue. METHODS: A descriptive longitudinal, prospective study design was used in which 506 mother-infant pairs were included. The mothers completed daily recordings on infant feeding during the first nine months after birth. A research assistant conducted fortnightly home visits with structured interviews. The resulting data on breastfeeding patterns are presented in two different ways: analysis of 'current status' data based on a single 24-hour recording of infant feeding at 2, 4 and 6 months of age, and analysis of data 'since birth', i.e. data on infant feeding for every day, starting from birth until the ages of 2, 4 and 6 months. RESULTS: A wide discrepancy between the results obtained from the two analyses was found. The difference in the exclusive breastfeeding rate was over 40 percentage points at both 2 and 4 months of age (92% versus 51% at 2 months and 73% versus 30% at 4 months) and 9 percentage points at 6 months (11% versus 1.8%). CONCLUSIONS: Current status indicators based on a 24-hour period may be inadequate and even misleading for many purposes. We propose that in many studies an indicator called 'exclusive breastfeeding since birth' could be added.

The role of the Swedish Child Health Services in breastfeeding promotion.

Sweden has one of the highest breastfeeding incidence and duration rates among industrialized countries. Although the Child Health Services offer breastfeeding support to all mothers, there are geographical differences in breastfeeding frequency at different ages. The aims of this study were to describe the present activities in the Child Health Services regarding breastfeeding promotion and to find research evidence regarding interventions. Thirty-three out of 42 healthcare districts replied to a questionnaire. Differences were found in the transfer of responsibility for newborn infants from hospital to Child Health Centres, criteria for and timing of home visits and recommendations regarding introduction of supplementary food and breastfeeding education for parents and professionals. There were also regional differences in breastfeeding statistics and follow-up periods. The following recommendations were made on the basis of the survey and relevant literature: transfer of responsibility for newborn infants must guarantee follow-up of all mother-infant pairs; uniform breastfeeding assessment and documentation must be established; all mother-infant pairs must be offered early home visits, continued on a regular basis by health visitors; drop-in consultations must be established; a telephone hotline must be set up; for preventive purposes, growth charts must be used based on breastfed infants; evidence-based guidelines for the introduction of other foods must be followed; information must be provided in parent groups; breastfeeding statistics must use WHO definitions; polyclinics must be available for service to mothers/infants after early discharge and as resources for Child Health Centres; Child and Maternal Health Centres must collaborate; quality assurance programs must be established; breastfeeding courses must be offered in the under- and postgraduate training of professionals; compulsory in-service education must be offered; lactation consultant training must be offered at the university level; and lactation consultant positions must be established.

Breastfeeding patterns in relation to thumb sucking and pacifier use.

OBJECTIVES: To analyze the influence of thumb sucking and pacifier use on breastfeeding patterns in exclusively breastfed infants, on the duration of exclusive breastfeeding, and on the total breastfeeding duration. STUDY DESIGN: Descriptive, longitudinal, prospective study. SETTING: The subjects were recruited from a population of 15 189 infants born in the maternity ward at the University Hospital, Uppsala, Sweden between May 1989 and December 1992. STUDY POPULATION: 506 mother-infant pairs. METHODS: Daily recordings by the mothers on infant feeding from the first week after delivery through the duration of the study. Fortnightly home visits with structured interviews by a research assistant. RESULTS: Pacifier use was associated with fewer feeds and shorter suckling duration per 24 hours, shorter duration of exclusive breastfeeding, and shorter total breastfeeding duration compared with no pacifier use. These associations were not found for thumb sucking. The possible negative effects of pacifiers on breastfeeding seemed to be related to the frequency of their use. Maternal age and education only slightly modified the association between pacifier use and breastfeeding duration. CONCLUSIONS: More frequent use of a pacifier was associated with shorter breastfeeding duration, even among a group of mothers who were highly motivated to breastfeed. breastfeeding duration, breastfeeding pattern, exclusive breastfeeding, pacifier use, thumb sucking.

Breastfeeding patterns in exclusively breastfed infants: a longitudinal prospective study in Uppsala, Sweden.

Exclusive breastfeeding was studied among 506 infants in Uppsala, Sweden, based on daily recordings during the first 6 mo. The mothers had previously breastfed at least one infant for at least 4 mo. Most of the mothers considered that they breastfed on demand. Wide variations in breastfeeding frequency and suckling duration were found both between different infants and in the individual infant over time. At 2 wk, the mean frequency of daytime feeds (based on one 13-d record) between different infants ranged from 2.9 to 10.8 and night-time feeds from 1.0 to 5.1. The daytime suckling duration (based on one 24-h record) ranged from 20 min to 4h 35 min and night-time duration from 0 to 2h 8 min. At any given age, a maximum of only 2% of the infants were not breastfed during the night. At 4 mo, 95% of the infants were breastfeeding and 40% were exclusively breastfed at this age. Longer breastfeeding duration and longer duration of exclusive breastfeeding were both associated with higher frequency of breastfeeds, longer breastfeeding of the previous child and higher education. No gender differences were found. Maternal smoking was associated with shorter duration of exclusive breastfeeding, and pacifier use was associated with shorter duration of both exclusive breastfeeding and total breastfeeding. This study confirms that every mother-infant pair needs to be understood as a unique dyad throughout lactation. These data demonstrate a wide range of patterns among women who are exclusively breastfeeding and indicate that it would be inappropriate to put pressure on individual families to adopt preconceived patterns of infant feeding.

Energy intake and physical activity during pregnancy in relation to maternal fat accretion and infant birthweight.

During the second pregnancy of 56 Swedish women resulting in a term birth, energy intake and physical activity were measured for 3 days at weeks 17 and 33. The values were related to maternal lean body mass, pregnancy weight gain, maternal fat accretion and infant birthweight by multiple linear regression analyses. A significant regression coefficient was found for energy intake at week 17 on maternal fat accretion. Energy intake was not significantly correlated with infant birthweight, not even when physical activity and maternal lean body mass were taken into account. Thus in a well-nourished Swedish population, energy intake is positively related to maternal fat accretion but not to the birthweight of term infants.

Diets of healthy Swedish children 4-24 months old. IV. Daily variation of energy and nutrient intake.

The day-to-day variations of energy and nutrient intake were studied in infants aged 4, 9, 15 and 24 months. There were 40, 40, 38 and 40 infants in the four groups, respectively. In the 4-month-old infants 3-day weighed food records were used, and in the infants of the other three ages, 7-day weighed food records. The smallest number of daily records required to classify the individual infants into the correct category with low or high intake with a specified degree of accuracy was calculated. Fewer daily records for energy and nutrient intake were needed for the 4-month-old infants than for the older ones.

Diets of healthy Swedish children 4-24 months old. II. Energy intake.

In a semi-longitudinal investigation comprising a total of 81 infants studied at one or more of the ages 4, 9, 15 and 24 months, the food intake was recorded on three consecutive days at 4 months and on seven consecutive days at 9, 15 and 24 months (40, 40, 38 and 40 infants, respectively in the four age groups). The median energy intake was lower than the Recommend Dietary Allowances in all age groups. The energy intake derived from fat was low among some of the 9-month-old infants. The contribution of sucrose to energy was as high as 10% at 24 months.

Diets of healthy Swedish children 4-24 months old. III. Nutrient intake.

In a semi-longitudinal investigation comprising a total of 81 infants studied at one or more of the ages 4, 9, 15 and 24 months, the food intake was recorded on three consecutive days at 4 months and on seven consecutive days at 9, 15 and 24 months (40, 40, 38 and 40 infants, respectively in the four age groups). The formula-fed 4-month-old infants had a markedly higher intake of all nutrients, except fat and retinol, than the breast-fed ones. In the three oldest age groups the nutrient intake was high as compared with RDA. The protein intake was exceptionally high. Median intakes that were definitely lower than RDA were noted only for vitamin D, iron and zinc. The nutrient density changed from the age of 9 to 24 months, indicating a transition during that period from infant to adult food habits.

Dietary intake in Swedish diabetic children.

The energy and nutrient intakes by 14 children with type I diabetes and 13 healthy peers were investigated by the 24-h recall method and the results were compared with current recommendations for the general population and with the guidelines for the dietary management of diabetes mellitus. The diabetic children showed not only good compliance with the recommendations but also a better intake in practically all respects than their healthy counterparts. The total energy intake by the diabetic children was in good agreement with the recommendations, while that of the controls was slightly lower. The protein energy per cent in the diet of the diabetic children was 18%, compared with 14% in the controls. Forty percent of the energy in the diet of the diabetic children was derived from fats, 36% in the controls. With the exception of carbohydrates, ascorbic acid and iron, the diet of the diabetic children had a higher nutrient density than that of the control children and the reverse was true for carbohydrates only. However, because of the generally higher energy intake displayed by the diabetic children, even the intake of these nutrients was at least as good in the diabetic children as in the controls. Eighty-six percent of the diabetic children but only 46% of the control children stated that the day for which intake data were given was a representative day.

Dietary intake, trace elements and serum protein status in young diabetics.

Dietary intake of energy and nutrients and its relation to trace element and protein status, as observed in 27 diabetic children and 13 healthy controls are discussed. The diabetic children had consistently higher intakes than the healthy controls in nearly all respects, except for carbohydrate and ascorbic acid. In spite of this, the diabetic children had a significantly lower mean serum magnesium than the healthy controls. It is suggested that hypomagnesemia in diabetic children may be the result of increased urinary loss or diversion of magnesium from normal metabolic pathways in this disease. This review also revealed a significantly higher mean serum selenium level in the diabetic children than in the healthy controls. However, no significant correlation was observed between serum selenium concentrations and protein intake, suggesting that a factor other than protein intake underlay the elevated levels of serum selenium. The diabetic children as a group had significantly lower levels of selected serum proteins than the controls, in spite of a significantly higher intake of protein by the diabetic group. It is suggested that both reduced serum proteins and elevated levels of serum selenium in the diabetic children are an expression of altered metabolism in combination with the effects of current modes of insulin treatment in this disease.