Duarte Freitas
Biographic Data
| ID | 4293824 |
|---|---|
| NAME | Duarte Freitas |
| GIVEN NAMES | Duarte |
| FAMILY NAME | Freitas |
| SIGNATURE | FREITAS D |
| AFFILIATIONS | Universidade da Madeira |
| ORCID | 0000-0001-6642-3370 |
| VERIFIED | Yes |
| TOTAL WORKS | 22 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 22 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2007 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 0 |
Participants and Non‐Participants in Organized Sports 11–14 Years
AIM: To compare the growth and maturity status, physical activity, motor coordination, and physical fitness of youth participants and non-participants in organized sports. SUBJECTS AND METHODS: The sample included 161 boys and 187 girls 11-12 years and 128 boys and 143 girls 13-14 years. Height, weight, skeletal age (SA), physical activity, motor coordination, and fitness were assessed. Sex-specific comparisons of participants and non-participant…
Secular Trends in Physical Growth Among Peruvian Children and Adolescents Living at High Altitudes
OBJECTIVE: We aim (1) to examine secular trends in height, weight, and waist circumference (WC) among Peruvian children and adolescents living in the city of Junín and (2) to compare their growth status with the World Health Organization (WHO) and US Centers for Disease Control and Prevention (CDC) reference data. METHODS: The sample included 2874 Peruvians (n = 1681 in the 2009 cohort and n = 1193 in the 2019 cohort) aged 6-16 years from the dis…
Body size and three estimates of skeletal age
OBJECTIVE: To estimate the associations between height, weight, and three estimates of skeletal age (SA) and the strength and motor performance of male soccer players in two chronological age (CA) groups, 9-12 (n = 60) and 13-16 (n = 52) years. METHODS: Height, weight, strength (grip), speed (5 m, 20 m sprints), acceleration (time at crossing 10 m in 20 m sprint), agility (figure-of-eight run), power (vertical jump), and endurance (intermittent s…
Interrelationships among skeletal age, growth status and motor performances in female athletes 10–15 years
SA per se accounted for small and non-significant amounts of variance in several motor performances of female youth athletes; rather, SA influenced performances indirectly through effects on stature, body mass and estimated FFM
Growth, maturity status, motor proficiency and fitness of participants and non-participants in organised sports 7–10 years
SA and performances among children 7-10 years active and not active in sport were largely non-significant statistically, while those active in sport were physically more active
Exploring Mediation Effects of Gait Speed, Body Balance, and Falls in the Relationship between Physical Activity and Health-Related Quality of Life in Vulnerable Older Adults
The present study aimed to examine whether gait speed (GS), body balance (BB), and falls mediated the relationship between physical activity (PA) and health-related quality of life (HRQoL) in community-dwelling older adults. This is a cross-sectional study that included 305 men and 314 women (69.5 ± 5.6 years), residing in the Autonomous Region of Madeira, Portugal. HRQoL and PA were assessed using the SF-36 and Baecke Questionnaires, respectivel…
Genetics of somatotype and physical fitness in children and adolescents
OBJECTIVES: To analyze the influence of genetic and environmental factors on the variation in somatotype, physical fitness, and their mutual associations. METHODS: Twins from 214 pairs (87 monozygotic) of the Autonomous Region of Madeira, Portugal, from 3 to 18 years of age (51% girls) were assessed in anthropometry and physical fitness tests. We estimated endomorphy, mesomorphy, and ectomorphy based on anthropometric measures and physical fitnes…
Regional variation in growth status. The Peruvian health and optimist growth study
Peruvians living at different altitudes differ in their growth indicators (height, weight, BMI, and WC), with significant differences between those living at sea level relative to their peers from other regions. Further, Peruvian schoolchildren of both sexes from the three geographical areas significantly differ from their US counterparts
Patterns of physical performance spurts during adolescence
Data relating physical performance to the timing of the adolescent growth spurt are limited. Aim: This study identifies: (i) age-at-peak height velocity (APHV), (ii) physical performance spurt patterns aligned to APHV; and (iii) cross-cultural and time patterns in Canadian, Brazilian and Portuguese boys. Subjects and methods: A total of 512 boys (131 Canadian, 250 Portuguese and 131 Brazilian), 8-17 years of age were followed serially using longi…
Are there gross motor coordination spurts during mid‐childhood
Objectives The aims of this study were (1) to identify the timing of the mid‐growth spurt (MGS) in stature in children and (2) to identify gross motor coordination (GMC) spurts when aligned by the age of attainment of the MGS (aMGS). Methods Stature, weight, and GMC were measured in 245 Portuguese children followed annually from 6 to 10 years. GMC was assessed and to estimate children's MGS in stature as well as GMC spurts in each of the four tes…
Growth velocity curves and pubertal spurt parameters of Peruvian children and adolescents living at different altitudes. The Peruvian health and optimist growth study
OBJETIVE: To estimate the growth parameters of Peruvian children and adolescents living at different altitudes. METHODS: The sample comprised 10 795 Peruvian children and adolescents (5781 girls, aged 6-7 years) from sea level, the Amazon region, and high altitude. Height was measured with standardized techniques. Mathematical and biological growth parameters were estimated using the Preece-Baines growth model I. RESULTS: Sea-level children and a…
Development of Physical Performance Tasks during Rapid Growth in Brazilian Children
Growth and physical performance scores were studied around three years of attainment of peak height velocity (PHV). We aimed to estimate the age at peak velocity, or at peak rate, in physical performance tasks, and sex-differences when aligned by biological age. A total of 131 boys and 123 girls, 8 to 14 years of age were recruited from the Cariri region of Brazil. A mixed longitudinal design was used with four overlapping age cohorts: 8, 10, 12,…
Familial resemblance in gross motor coordination. The Peruvian Sibling Study on Growth and Health
These results demonstrate statistically significant sibling resemblance in GMC. Age, BMI, PF and geographical area were significant correlates of GMC
Correlates of health-related quality of life in young-old and old–old community-dwelling older adults
Biological and environmental determinants of 12-minute run performance in youth
Age and sum of skinfolds in both sexes and rural residence in boys are significant predictors of 12-minute run performance in Portuguese youth
The Relation of Hypertension to Performance in Immediate and Delayed Cued Recall and Working Memory in Old Age
The detrimental influences of hypertension on cognitive functioning in old age may be reduced in individuals with greater cognitive reserve accumulated during the life course
Gross motor coordination and weight status of P ortuguese children aged 6–14 years
OBJECTIVES: To construct age- and gender-specific percentiles for gross motor coordination (MC) tests and to explore differences in gross MC in normal-weight, overweight and obese children. METHODS: Data are from the "Healthy Growth of Madeira Study," a cross-sectional study carried out in children, aged 6-14 years. All 1,276 participants, 619 boys and 657 girls, were assessed for gross MC (Körperkoordinations Test für Kinder, KTK), anthropometry…
Centile Curves and Reference Values for Height, Body Mass, Body Mass Index and Waist Circumference of Peruvian Children and Adolescents
This study aimed to provide height, body mass, BMI and waist circumference (WC) growth centile charts for school-children, aged 4-17 years, from central Peru, and to compare Peruvian data with North-American and Argentinean references. The sample consisted of 8753 children and adolescents (4130 boys and 4623 girls) aged 4 to 17 years, from four Peruvian cities: Barranco, La Merced, San Ramón and Junín. Height, body mass and WC were measured accor…
Change, stability and prediction of gross motor co-ordination in Portuguese children
MC seemed moderately stable from childhood through adolescence and, additionally, inter-individual predictors at adolescence were growth, FMS, physical fitness, physical activity and SES
Short-term secular change in height, body mass and Tanner-Whitehouse 3 skeletal maturity of Madeira youth, Portugal
The short-term trends for height and mass were not entirely consistent with the trends in RUS and Carpal SMSs and SAs
Tracking of fatness during childhood, adolescence and young adulthood
Over 7.2 years, tracking was moderate-to-high for fatness. Variance was explained by fatness indicators and to a small extent by physical fitness, physical activity and maturation
Socio-economic status, growth, physical activity and fitness
Considerable variation in somatic growth and physical fitness in association with SES has been demonstrated, but little association was found for physical activity
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Socio-economic status, growth, physical activity and fitness
Considerable variation in somatic growth and physical fitness in association with SES has been demonstrated, but little association was found for physical activity
Tracking of fatness during childhood, adolescence and young adulthood
Over 7.2 years, tracking was moderate-to-high for fatness. Variance was explained by fatness indicators and to a small extent by physical fitness, physical activity and maturation
Short-term secular change in height, body mass and Tanner-Whitehouse 3 skeletal maturity of Madeira youth, Portugal
The short-term trends for height and mass were not entirely consistent with the trends in RUS and Carpal SMSs and SAs
Gross motor coordination and weight status of P ortuguese children aged 6–14 years
OBJECTIVES: To construct age- and gender-specific percentiles for gross motor coordination (MC) tests and to explore differences in gross MC in normal-weight, overweight and obese children. METHODS: Data are from the "Healthy Growth of Madeira Study," a cross-sectional study carried out in children, aged 6-14 years. All 1,276 participants, 619 boys and 657 girls, were assessed for gross MC (Körperkoordinations Test für Kinder, KTK), anthropometry…
Centile Curves and Reference Values for Height, Body Mass, Body Mass Index and Waist Circumference of Peruvian Children and Adolescents
This study aimed to provide height, body mass, BMI and waist circumference (WC) growth centile charts for school-children, aged 4-17 years, from central Peru, and to compare Peruvian data with North-American and Argentinean references. The sample consisted of 8753 children and adolescents (4130 boys and 4623 girls) aged 4 to 17 years, from four Peruvian cities: Barranco, La Merced, San Ramón and Junín. Height, body mass and WC were measured accor…
Change, stability and prediction of gross motor co-ordination in Portuguese children
MC seemed moderately stable from childhood through adolescence and, additionally, inter-individual predictors at adolescence were growth, FMS, physical fitness, physical activity and SES
Correlates of health-related quality of life in young-old and old–old community-dwelling older adults
Biological and environmental determinants of 12-minute run performance in youth
Age and sum of skinfolds in both sexes and rural residence in boys are significant predictors of 12-minute run performance in Portuguese youth
The Relation of Hypertension to Performance in Immediate and Delayed Cued Recall and Working Memory in Old Age
The detrimental influences of hypertension on cognitive functioning in old age may be reduced in individuals with greater cognitive reserve accumulated during the life course
Familial resemblance in gross motor coordination. The Peruvian Sibling Study on Growth and Health
These results demonstrate statistically significant sibling resemblance in GMC. Age, BMI, PF and geographical area were significant correlates of GMC
Are there gross motor coordination spurts during mid‐childhood
Objectives The aims of this study were (1) to identify the timing of the mid‐growth spurt (MGS) in stature in children and (2) to identify gross motor coordination (GMC) spurts when aligned by the age of attainment of the MGS (aMGS). Methods Stature, weight, and GMC were measured in 245 Portuguese children followed annually from 6 to 10 years. GMC was assessed and to estimate children's MGS in stature as well as GMC spurts in each of the four tes…
Growth velocity curves and pubertal spurt parameters of Peruvian children and adolescents living at different altitudes. The Peruvian health and optimist growth study
OBJETIVE: To estimate the growth parameters of Peruvian children and adolescents living at different altitudes. METHODS: The sample comprised 10 795 Peruvian children and adolescents (5781 girls, aged 6-7 years) from sea level, the Amazon region, and high altitude. Height was measured with standardized techniques. Mathematical and biological growth parameters were estimated using the Preece-Baines growth model I. RESULTS: Sea-level children and a…
Development of Physical Performance Tasks during Rapid Growth in Brazilian Children
Growth and physical performance scores were studied around three years of attainment of peak height velocity (PHV). We aimed to estimate the age at peak velocity, or at peak rate, in physical performance tasks, and sex-differences when aligned by biological age. A total of 131 boys and 123 girls, 8 to 14 years of age were recruited from the Cariri region of Brazil. A mixed longitudinal design was used with four overlapping age cohorts: 8, 10, 12,…
Patterns of physical performance spurts during adolescence
Data relating physical performance to the timing of the adolescent growth spurt are limited. Aim: This study identifies: (i) age-at-peak height velocity (APHV), (ii) physical performance spurt patterns aligned to APHV; and (iii) cross-cultural and time patterns in Canadian, Brazilian and Portuguese boys. Subjects and methods: A total of 512 boys (131 Canadian, 250 Portuguese and 131 Brazilian), 8-17 years of age were followed serially using longi…
Genetics of somatotype and physical fitness in children and adolescents
OBJECTIVES: To analyze the influence of genetic and environmental factors on the variation in somatotype, physical fitness, and their mutual associations. METHODS: Twins from 214 pairs (87 monozygotic) of the Autonomous Region of Madeira, Portugal, from 3 to 18 years of age (51% girls) were assessed in anthropometry and physical fitness tests. We estimated endomorphy, mesomorphy, and ectomorphy based on anthropometric measures and physical fitnes…
Regional variation in growth status. The Peruvian health and optimist growth study
Peruvians living at different altitudes differ in their growth indicators (height, weight, BMI, and WC), with significant differences between those living at sea level relative to their peers from other regions. Further, Peruvian schoolchildren of both sexes from the three geographical areas significantly differ from their US counterparts
Exploring Mediation Effects of Gait Speed, Body Balance, and Falls in the Relationship between Physical Activity and Health-Related Quality of Life in Vulnerable Older Adults
The present study aimed to examine whether gait speed (GS), body balance (BB), and falls mediated the relationship between physical activity (PA) and health-related quality of life (HRQoL) in community-dwelling older adults. This is a cross-sectional study that included 305 men and 314 women (69.5 ± 5.6 years), residing in the Autonomous Region of Madeira, Portugal. HRQoL and PA were assessed using the SF-36 and Baecke Questionnaires, respectivel…
Body size and three estimates of skeletal age
OBJECTIVE: To estimate the associations between height, weight, and three estimates of skeletal age (SA) and the strength and motor performance of male soccer players in two chronological age (CA) groups, 9-12 (n = 60) and 13-16 (n = 52) years. METHODS: Height, weight, strength (grip), speed (5 m, 20 m sprints), acceleration (time at crossing 10 m in 20 m sprint), agility (figure-of-eight run), power (vertical jump), and endurance (intermittent s…
Interrelationships among skeletal age, growth status and motor performances in female athletes 10–15 years
SA per se accounted for small and non-significant amounts of variance in several motor performances of female youth athletes; rather, SA influenced performances indirectly through effects on stature, body mass and estimated FFM
Growth, maturity status, motor proficiency and fitness of participants and non-participants in organised sports 7–10 years
SA and performances among children 7-10 years active and not active in sport were largely non-significant statistically, while those active in sport were physically more active
Participants and Non‐Participants in Organized Sports 11–14 Years
AIM: To compare the growth and maturity status, physical activity, motor coordination, and physical fitness of youth participants and non-participants in organized sports. SUBJECTS AND METHODS: The sample included 161 boys and 187 girls 11-12 years and 128 boys and 143 girls 13-14 years. Height, weight, skeletal age (SA), physical activity, motor coordination, and fitness were assessed. Sex-specific comparisons of participants and non-participant…
Secular Trends in Physical Growth Among Peruvian Children and Adolescents Living at High Altitudes
OBJECTIVE: We aim (1) to examine secular trends in height, weight, and waist circumference (WC) among Peruvian children and adolescents living in the city of Junín and (2) to compare their growth status with the World Health Organization (WHO) and US Centers for Disease Control and Prevention (CDC) reference data. METHODS: The sample included 2874 Peruvians (n = 1681 in the 2009 cohort and n = 1193 in the 2019 cohort) aged 6-16 years from the dis…
Medicine (22 works) · Demography (18 works) · Obesity, Physical Activity, Diet (13 works) · Children's Physical and Motor Development (11 works) · Demography (11 works) · Physical therapy (11 works) · Developmental psychology (10 works) · Psychology (10 works) · Gerontology (8 works) · Internal Medicine (8 works)