P T Katzmarzyk
Datos Biográficos
| ID | 98084 |
|---|---|
| NOMBRE | P T Katzmarzyk |
| NOMBRES | P T |
| APELLIDO | Katzmarzyk |
| FIRMA | KATZMARZYK P T |
| AFILIACIONES | Pennington Biomedical Research Center |
| ORCID | 0000-0002-9280-6022 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 136 |
| TOTAL DE CITAS | 84 |
| TOTAL COMO AUTOR | 136 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 1994 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 5 |
Family, social, and built environment
NCT02784509
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…
Contributions of Roy J. Shephard to the Study of Circumpolar Human Biology and Health
More than any other scholar in our field, Professor Roy J. Shephard's research has shaped and transformed our understanding of the biology and health of circumpolar populations. His long‐term research among the Inuit of Igloolik, Canada has provided the field of human biology with foundational insights into how human populations adapt to arctic climates, and how the transition to a market‐oriented lifestyle erodes fitness and metabolic health. Sh…
Longitudinal changes in physical activity and dietary fat intake during an intensive lifestyle intervention
BACKGROUND: Lifestyle modifications including physical activity and dietary changes are considered the cornerstone approach for behavioral obesity management. However, there is a lack of knowledge about long-term trajectory patterns during interventions. AIMS: This study aims to (1) assess physical activity and dietary fat intake trajectory during a 24-month intensive lifestyle intervention; and (2) identify baseline characteristics and sociodemo…
Secular trends in BMI, excess weight and body fat skinfolds in Peruvian children living at high altitude
Positive secular trends in BMIlog and SKFlog were observed, with significant increases at specific ages
Worldwide trends in underweight and obesity from 1990 to 2022
BACKGROUND: Underweight and obesity are associated with adverse health outcomes throughout the life course. We estimated the individual and combined prevalence of underweight or thinness and obesity, and their changes, from 1990 to 2022 for adults and school-aged children and adolescents in 200 countries and territories. METHODS: ). For school-aged children and adolescents, we report thinness (BMI 2 SD above the median). FINDINGS: From 1990 to 20…
Is there an association between proficiency in fundamental movement skills and moderate‐to‐vigorous physical activity in childhood on weekdays and weekends? The React project
OBJECTIVE: The present study probes into the association between children's fundamental movement skills (FMS) and moderate-to-vigorous physical activity (MVPA) during weekdays and weekends. METHODS: This cross-sectional sample included 1014 children aged 6-10 years from the REACT project. Physical activity was assessed with accelerometry, and five FMS (stationary dribble, kick, catch, overhand throw, and underhand roll) were assessed with the dig…
Sleep and fundamental movement skills in primary schoolchildren
OBJECTIVE: Whether sleep is related to fundamental movement skills (FMS) in the pediatric population is largely unknown. The objective of this study was to examine the association between sleep characteristics (duration, efficiency, regularity) and FMS proficiency levels in school-aged children. METHODS: This cross-sectional study included 996 children (mean age: 8.3 ± 1.2 years) from 25 of the 32 primary schools in Matosinhos, northern Portugal.…
Background, rationale, and methodological overview of the React project—return‐to‐action on growth, motor development, and health after the Covid ‐19 pandemic in primary school children
OBJECTIVES: The REACT project was designed around two main aims: (1) to assess children's growth and motor development after the COVID-19 pandemic and (2) to follow their fundamental movement skills' developmental trajectories over 18 months using a novel technological device (Meu Educativo®) in their physical education classes. In this introductory article, the first of the Journal's special issue dedicated to REACT, our goal was to present the …
Statistical analysis of the longitudinal fundamental movement skills data in the React project using the multilevel ordinal logistic model
OBJECTIVES: The REACT project was designed around two main aims: (1) to assess children's growth and motor development after the COVID-19 pandemic and (2) to follow their fundamental movement skills' developmental trajectories over 18 months using a novel technological device (Meu Educativo®) in their physical education classes. In this article, our goal is to describe statistical analysis of the longitudinal ordinal motor development data that w…
Validity and reliability of Meu Educativo ®
OBJECTIVES: There is evidence showing that children's proficiency in fundamental movement skills (FMS) is positively related to weight status, physical activity, fitness levels, cognitive development, as well as academic performance. Yet, the feasibility of FMS assessment is challenging, especially with relatively large samples of children. This article presents a new tool named Meu Educativo® to assess children's FMS levels, including its validi…
Associations of obesity, movement behaviors, and socioeconomic status with fundamental movement skills in children
OBJECTIVE: To investigate the relationship of biological characteristics (age, sex, and obesity), movement behaviors (physical activity and sedentary time), and family socioeconomic status with fundamental movement skills (FMS) in primary school children. METHODS: This cross-sectional study sampled 1014 children (537 girls) aged 6 to 10 years from 25 primary schools in Matosinhos, north of Portugal. Five object control skills (dribbling, kicking,…
A multivariate multilevel approach to unravel the associations between individual and school factors on children's motor performance in the React project
PF and object control FMS z-scores were moderately related. Not all child characteristics were associated with both PF and object control FMS, and their effect sizes were different. School characteristics only explained 10% of the total variation in PF and object control FMS
Individual and school correlates of body mass index and cardiorespiratory fitness in primary school children from the React project
BMI and CRF had a low but statistically significant negative correlation in this sample of children. Most of the variation in BMI and CRF was explained by child-level characteristics
Advancing Health Equity
We assessed the impact of an innovative Louisiana community–academic–public health–practice (CAPP) partnership in addressing COVID-19–associated Black–White vaccination disparities over 19 months. Initially (April 2021), the cumulative vaccinations for Black versus White Louisianans were 54 542 per 100 000 versus 62 435 per 100 000, respectively. By October 2022, cumulative vaccinations for Black versus White Louisianans were 142 437 per 100 000 …
Adherence to Recess Guidelines in the United States Using Nationally Representative Data
BACKGROUND: National adherence to the recess recommendations of the Centers for Disease Control and Prevention (CDC) has not been comprehensively studied in the United States. METHODS: Data from 6 nationally representative data sets over the last decade (Classification of Laws Associated with School Students, Early Childhood Longitudinal Study, National Health and Nutrition Examination Survey, National Youth Fitness Survey, School Health Policies…
In memoriam
The authors declare no conflict of interest. Data sharing not applicable to this article as no datasets were generated or analysed during the current study
Exploring barriers to Sars‐CoV ‐2 testing uptake in underserved black communities in Louisiana
OBJECTIVE: To collect qualitative data on approaches that can potentially reduce barriers to, and create strategies for, increasing SARS-CoV-2 testing uptake in underserved Black communities in Louisiana. METHODS: A series of eight focus groups, including 41 participants, were conducted in primarily Black communities. The Nominal Group Technique (NGT) was used to determine perceptions of COVID-19 as a disease, access to testing, and barriers limi…
Secular Trends in Physical Fitness of Peruvian Children Living at High-Altitude
The physical fitness of children is an important marker of health, and monitoring its temporal changes provides important information for developing interventions. We aimed to: (1) describe secular trends in physical fitness across age, within each sex, in Peruvian schoolchildren; and (2) verify if these trends are also present when adjusted for changes in height and weight. We sampled 1590 children (707 in 2009; 883 in 2019), aged 6-11 years. Ph…
Sibling Resemblance in Physical Activity Levels
Physical activity is associated with a host of positive health outcomes and is shaped by both genetic and environmental factors. We aim to: (1) estimate sibling resemblance in two physical activity phenotypes [total number of steps∙day -1 and minutes for moderate steps per day (min∙day -1 )]; and (2) investigate the joint associations of individual characteristics and shared natural environment with intra-pair sibling similarities in each phenoty…
Physical inactivity and non-communicable disease burden in low-income, middle-income and high-income countries
OBJECTIVES: Physical inactivity is a risk factor for premature mortality and several non-communicable diseases. The purpose of this study was to estimate the global burden associated with physical inactivity, and to examine differences by country income and region. METHODS: Population-level, prevalence-based population attributable risks (PAR) were calculated for 168 countries to estimate how much disease could be averted if physical inactivity w…
Global Matrix 4.0 Physical Activity Report Card Grades for Children and Adolescents
Background : The Global Matrix 4.0 on physical activity (PA) for children and adolescents was developed to achieve a comprehensive understanding of the global variation in children’s and adolescents’ (5–17 y) PA, related measures, and key sources of influence. The objectives of this article were (1) to summarize the findings from the Global Matrix 4.0 Report Cards, (2) to compare indicators across countries, and (3) to explore trends related to t…
Variation and Predictors of Gross Motor Coordination Development in Azorean Children
We investigated the development of gross motor coordination (GMC) as well as its predictors in school-aged Azorean children. The sample included 181 children (90 girls), followed consecutively for 4 years from 6 to 9 years of age. GMC was assessed with the Körperkoordinationstest für Kinder, and predictors included body mass index, standing long jump, 50-yard dash, and shuttle run. The changes in GMC and the effects of predictors were analyzed wi…
Association of Night-Time Screen-Viewing with Adolescents’ Diet, Sleep, Weight Status, and Adiposity
Night-time screen-viewing (SV) contributes to inadequate sleep and poor diet, and subsequently excess weight. Adolescents may use many devices at night, which can provide additional night-time SV. Purpose: To identify night-time SV patterns, and describe differences in diet, sleep, weight status, and adiposity between patterns in a cross-sectional and longitudinal manner. Methods: Adolescents (10-16 y) reported devices they viewed at night and co…
Variability in energy expenditure is much greater in males than females
In mammals, trait variation is often reported to be greater among males than females. However, to date, mainly only morphological traits have been studied. Energy expenditure represents the metabolic costs of multiple physical, physiological, and behavioral traits. Energy expenditure could exhibit particularly high greater male variation through a cumulative effect if those traits mostly exhibit greater male variation, or a lack of greater male v…
Physical Activity and Immigrant Status
Overweight and Obesity Mortality Trends in Canada, 1985–2000
Physical Activity and Ethnicity
Updating the Canadian Obesity Maps
Patterns and Trends in Walking Behaviour among Canadian Adults
Physical Activity, Cardiorespiratory Fitness and Body Mass Index as Predictors of Substantial Weight Gain and Obesity
Differences between observed and predicted energy costs at rest and during exercise in three subsistence-level populations
Estimates of daily energy expenditure are important for many areas of research in human ecology and adaptability. The most common technique for estimating human energy expenditure under field conditions, the factorial method, generally relies on activity-specific energy costs derived from published sources, based largely on North American and European subjects. There is concern that such data may not be appropriate for non-Western populations bec…
Variability in energy expenditure is much greater in males than females
In mammals, trait variation is often reported to be greater among males than females. However, to date, mainly only morphological traits have been studied. Energy expenditure represents the metabolic costs of multiple physical, physiological, and behavioral traits. Energy expenditure could exhibit particularly high greater male variation through a cumulative effect if those traits mostly exhibit greater male variation, or a lack of greater male v…
Using mixed methods to understand women's parenting practices related to their child's outdoor play and physical activity among families living in diverse neighborhood environments
A convergent parallel mixed methods design was used to understand parenting practices for outdoor play, their influence on adolescent's physical activity and outdoor play and the role of the neighborhood and child's sex. Adolescents (n = 263) and their parents completed questionnaires and wore accelerometers. Parents (n = 30) participated in in-depth interviews. Parenting practices were examined by neighborhood disadvantage and child's sex in qua…
Activity related energy expenditure, appetite and energy intake. Potential implications for weight management
Associations of neighborhood social environment attributes and physical activity among 9–11 year old children from 12 countries
Body Mass Index and Risk of Cardiovascular Disease, Cancer and All-cause Mortality
Predicted maximal oxygen consumption of indigenous Siberians
This study presents physical fitness data on two indigenous Siberian populations, the Evenki and Keto. The Canadian Aerobic Test of Fitness (CATF) was utilized to provide estimates of maximal oxygen consumption (V̇O 2 max) for a sample of 44 subjects (30 males, 14 females) as baseline data for further studies on changing fitness levels and the health problems associated with acculturation. Estimates of V̇O 2 max average 46.2 ml kg −1 min −1 for m…
Growth and nutritional status of the Evenki reindeer herders of Siberia
This study examines physical growth and nutritional status in a sample of 478 (247 males; 231 females) Evenki herders of Central Siberia. The Evenki display slow growth in stature and body weight, particularly during late childhood and adolescence. Adult males fall below the U.S. 5th percentiles for both stature and body weight. Adult females are below the 5th percentile for stature and approximate the 15th percentile for weight. Despite their di…
Resting metabolic rate and daily energy expenditure among two indigenous Siberian populations
Resting metabolic rate (RMR) and total daily energy expenditure (TDEE) were measured on a sample of 47 adults (35 males, 12 females) from two indigenous Siberian populations, the Evenki and Keto. The Douglas bag method of indirect calorimetry was used to measure the energy cost of lying, sitting, standing, and three exercise levels of the Canadian aerobic test of fitness (step test). The flex‐heart rate method of heart rate monitoring (flex‐HR; S…
Energetics and population ecology of Siberian herders
Methodological advances now permit human biologists to more effectively monitor energy dynamics in traditional societies. This study examines the nutritional ecology and energetics of semisubsistence herders of Siberia (Evenki) during a single season of their annual cycle (late summer). Total energy expenditure (TEE) among adults, as measured by daily heart-rate monitoring, is greater in Evenki men (TEE = 11.9 ± 2.8 MJ/d in men and 8.8 ± 2.1 MJ/d…
Energetics and population ecology of Siberian herders
Methodological advances now permit human biologists to more effectively monitor energy dynamics in traditional societies. This study examines the nutritional ecology and energetics of semisubsistence herders of Siberia (Evenki) during a single season of their annual cycle (late summer). Total energy expenditure (TEE) among adults, as measured by daily heart-rate monitoring, is greater in Evenki men (TEE = 11.9 ± 2.8 MJ/d in men and 8.8 ± 2.1 MJ/d…
Differences between observed and predicted energy costs at rest and during exercise in three subsistence-level populations
Estimates of daily energy expenditure are important for many areas of research in human ecology and adaptability. The most common technique for estimating human energy expenditure under field conditions, the factorial method, generally relies on activity-specific energy costs derived from published sources, based largely on North American and European subjects. There is concern that such data may not be appropriate for non-Western populations bec…
Somatotype and cardiovascular risk factors in healthy adults
Relationships between cardiovascular risk factors and Heath-Carter anthropometric somatotype components were considered in 642 healthy adults free from overt disease: 68 males and 177 females, 30–39 years, and 233 males and 224 females, 40–49 years of age. Risk factors included systolic and diastolic blood pressures (SBP, DBP), fasting glycemia (GLYC), triglycerides (TG), plasma cholesterol (CHOL), the high density lipoprotein cholesterol fractio…
Somatotype and cardiovascular risk factors in healthy adults
Relationships between cardiovascular risk factors and Heath-Carter anthropometric somatotype components were considered in 642 healthy adults free from overt disease: 68 males and 177 females, 30-39 years, and 233 males and 224 females, 40-49 years of age. Risk factors included systolic and diastolic blood pressures (SBP, DBP), fasting glycemia (GLYC), triglycerides (TG), plasma cholesterol (CHOL), the high density lipoprotein cholesterol fractio…
The contribution of biological maturation to the strength and motor fitness of children
The interrelationships among skeletal maturity, body size, strength and motor fitness were examined in American children 7-12 years of chronological age (CA). A total of 391 Black (184 boys, 207 girls) and 349 White (193 boys, 156 girls) children participated in the study. Biological maturity was assessed by the Tanner-Whitehouse II method, 20 bone skeletal ages (SA). Strength items included right and left grip strength, and pushing and pulling s…
Somatotype and indicators of metabolic fitness in youth
The relationship between physique and metabolic fitness was examined in a sample of 413 boys and 343 girls 9-18 years of age from Phase I of the Québec Family Study. Physique was assessed using the Heath-Carter anthropometric somatotype. Indicators of metabolic fitness were plasma triglyceride levels (TG), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), and blood glucose levels (GLY). The sample was divi…
Climatic influences on human body size and proportions
This study reevaluates the long-standing observation that human morphology varies with climate. Data on body mass, the body mass index [BMI; mass (kg)/stature (m)2], the surface area/body mass ratio, and relative sitting height (RSH; sitting height/stature) were obtained for 223 male samples and 195 female samples derived from studies published since D.F. Roberts' landmark paper “Body weight, race, and climate” in 1953 (Am. J. Phys. Anthropol. 11…
Climatic influences on human body size and proportions
This study reevaluates the long-standing observation that human morphology varies with climate. Data on body mass, the body mass index [BMI; mass (kg)/stature (m)2], the surface area/body mass ratio, and relative sitting height (RSH; sitting height/stature) were obtained for 223 male samples and 195 female samples derived from studies published since D.F. Roberts' landmark paper "Body weight, race, and climate" in 1953 (Am. J. Phys. Anthropol. 11…
Physique and echocardiographic dimensions in children, adolescents and young adults
Relationships between echocardiographic dimensions and the Heath-Carter anthropometric somatotype were considered in healthy, non-obese children (8-11 year olds, n = 143), adolescents (12 15 year olds, n = 216) and young adults (16-24 years, n = 190). Cardiac dimensions, measured by M-mode echocardiography at end-diastole, included left ventricular internal diameter (LVIDd), posterior wall thickness (PWTd), and interventricular posterior wall thi…
Genetics of abdominal visceral fat levels
The purpose of this review is to explore the evidence accumulated thus far that suggests a genetic component to the observed variation in abdominal visceral fat (AVF) levels. The precise determination of AVF levels in humans is limited to methods such as computerized tomography and magnetic resonance imaging; thus, few studies have examined the role of genetic factors on this phenotype. Evidence from the Québec Family Study (QFS) and the HERITAGE…
Genetics of abdominal visceral fat levels
The purpose of this review is to explore the evidence accumulated thus far that suggests a genetic component to the observed variation in abdominal visceral fat (AVF) levels. The precise determination of AVF levels in humans is limited to methods such as computerized tomography and magnetic resonance imaging; thus, few studies have examined the role of genetic factors on this phenotype. Evidence from the Québec Family Study (QFS) and the HERITAGE…
Relation between birth weight at term and growth rate, skeletal age, and cortical bone at 6-11 years
There is an apparent link between fetal and childhood growth and puberty and risk for several degenerative diseases in adulthood. It is also important to consider associations between birth weight and indicators of growth and biological maturation during childhood and adolescence as potential explanations for associations between fetal growth and adult risk for disease. The present study examines the association between birth weight and (1) size …
Body size and physique among Canadians of First Nation and European ancestry
The purpose of this study was to compare body size and physique among Canadians of Aboriginal (First Nation [FN]) and European ancestry (EA) from the northern Ontario communities of Temagami and Bear Island. The sample consisted of 130 FN and 494 EA participants including adults (20-75 years: 214 men, 234 women) and youth (5-19 years: 97 boys, 79 girls). Indicators of body size and physique included stature, the sitting height-to-stature ratio (S…
Familial resemblance in fatness and fat distribution
The purpose of the study was to estimate the degree of familial resemblance in anthropometric indicators of fatness and fat distribution. The sample consisted of 327 Caucasian participants from 102 nuclear families. Indicators of fatness included the body mass index (BMI), the sum of six skinfolds (SF6: triceps + biceps + medial calf + subscapular + suprailiac + abdominal), and waist circumference (WAIST), while indicators of fat distribution inc…
Familial resemblance for physique
In general, a pattern of no spouse but significant parent-child correlations implicates the role of genes on human physique, provided that mating is random with regard to these traits
Prediction of physical activity and physical work capacity (PWC150) in young adulthood from childhood and adolescence with consideration of parental measures
The 12-year prediction of physical activity level and submaximal aerobic fitness observed during young adulthood was quantified from childhood and parental measures. The sample consisted of 153 children and adolescents of the Quebec Family Study who were evaluated at baseline and reassessed 12 years later, as young adults. Physical work capacity at a heart rate of 150 beats x min(-1) (PWC150) was measured using cycle ergometry. A 3-day activity r…
Man–environment relationship, in honour of Alex F. Roche
Familial risk of high blood pressure in the Canadian population
Familial risk ratios for high blood pressure were estimated in a representative sample of the Canadian population. The sample consisted of 14,069 participants 7–69 years of age from 5,753 families participating in the 1981 Canada Fitness Survey. Resting systolic (SBP) and diastolic (DBP) blood pressures were adjusted for the effects of body mass index using regression procedures. Varying degrees of high blood pressure were defined as the 75th, 85…
Familial risk of high blood pressure in the Canadian population
Familial risk ratios for high blood pressure were estimated in a representative sample of the Canadian population. The sample consisted of 14,069 participants 7–69 years of age from 5,753 families participating in the 1981 Canada Fitness Survey. Resting systolic (SBP) and diastolic (DBP) blood pressures were adjusted for the effects of body mass index using regression procedures. Varying degrees of high blood pressure were defined as the 75 th , …
Man–environment relationship, in honour of Alex F. Roche
Temporal trends in overweight and obesity in Canada, 1981–1996
Medicine (123 obras) · Obesity, Physical Activity, Diet (93 obras) · Demography (89 obras) · Physical therapy (49 obras) · Demography (45 obras) · Internal Medicine (45 obras) · Children's Physical and Motor Development (43 obras) · Physical activity (42 obras) · Body mass index (41 obras) · Environmental health (41 obras)