Research Topics
| K JanzSummaryAffiliation: University of Iowa Country: USA Publications
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Detail Information
Publications
Validation evidence for the Netherlands physical activity questionnaire for young children: the Iowa bone development studyKathleen F Janz
Department of Health and Sports Studies, The University of Iowa, IA 52242, USA
Res Q Exerc Sport 76:363-9. 2005
Measuring activity in children and adolescents using self-report: PAQ-C and PAQ-AKathleen F Janz
Department of Health and Sports Studies, University of Iowa, Iowa City, IA 52242, USA
Med Sci Sports Exerc 40:767-72. 2008....
Tracking of TV and video gaming during childhood: Iowa Bone Development StudyShelby L Francis
Department of Health and Human Physiology, University of Iowa, Iowa City, IA, USA
Int J Behav Nutr Phys Act 8:100. 2011..This study examined tracking of TV viewing (TV) and video game use (VG) from middle childhood through early adolescence after adjusting for moderate and vigorous physical activity (MVPA), percentage of body fat (% BF), and maturity...- Physical activity in epidemiology: moving from questionnaire to objective measurementK F Janz
Department of Health and Sport Studies, University of Iowa, Iowa City, IA 52242, USA
Br J Sports Med 40:191-2. 2006 - Physical activity augments bone mineral accrual in young children: The Iowa Bone Development studyKathleen F Janz
Department of Health and Sport Studies, The University of Iowa, Iowa City, Iowa 52242, USA
J Pediatr 148:793-9. 2006..This 3-year follow-up study examined associations between physical activity and bone mineral content (BMC) and whether physical activity augments BMC accrual... - Physical activity and femoral neck bone strength during childhood: the Iowa Bone Development StudyKathleen F Janz
Department of Health and Sport Studies, The University of Iowa, Iowa City, Iowa, USA
Bone 41:216-22. 2007..These results suggest that physical activity is an important contributor to bone strength prior to adolescence and that increasing levels of physical activity during childhood are likely to enhance optimal bone strength... - Subjective and objective measures of physical activity in relationship to bone mineral content during late childhood: the Iowa Bone Development StudyK F Janz
Department of Health and Sport Studies, University of Iowa, Iowa City, IA 52242, USA
Br J Sports Med 42:658-63. 2008..This study compared accelerometry to self-report for the assessment of physical activity (PA) in relation to bone mineral content (BMC). In addition, we compared the ability of these measures to assess PA in boys versus girls... - Sustained effect of early physical activity on body fat mass in older childrenKathleen F Janz
Department of Health and Sport Studies, University of Iowa, Iowa City, Iowa 52242, USA
Am J Prev Med 37:35-40. 2009..Physical activity is assumed to reduce excessive fatness in children. This study examined whether the benefits of early childhood moderate-to-vigorous physical activity (MVPA) on fatness are sustained throughout childhood... - Early physical activity provides sustained bone health benefits later in childhoodKathleen F Janz
Department of Health and Sport Studies, The University of Iowa, Iowa City, IA 52242, USA
Med Sci Sports Exerc 42:1072-8. 2010..This study examined the potential effect of early childhood moderate and vigorous physical activity (MVPA) on later bone health... - Tracking of activity and sedentary behaviors in childhood: the Iowa Bone Development StudyKathleen F Janz
Department of Health and Sport Studies, University of Iowa, Iowa City, 52242, USA
Am J Prev Med 29:171-8. 2005..This study examined the tracking of activity and sedentary behavior in relation to adiposity during middle childhood... - Three-year follow-up of changes in aerobic fitness during puberty: the Muscatine StudyK F Janz
Department of Sport, Health, and Leisure Studies, University of Iowa, USA
Res Q Exerc Sport 68:1-9. 1997..min-1). Measures of aerobic fitness prior to and during early puberty tend to predict aerobic fitness during puberty... - Increases in physical fitness during childhood improve cardiovascular health during adolescence: the Muscatine StudyK F Janz
Department of Health, Leisure, and Sport Studies Department of epidemilogy, University of Iowa, Iowa City, Iowa 52242, USA
Int J Sports Med 23:S15-21. 2002..Childhood health promotion programs that specifically target increases in physical fitness may help to reduce the increasing prevalence of adolescent obesity... - Fatness, physical activity, and television viewing in children during the adiposity rebound period: the Iowa Bone Development StudyKathleen F Janz
Department of Health and Sport Studies, 102 FH, The University of Iowa, Iowa City, IA 52242, USA
Prev Med 35:563-71. 2002..Activity was measured using accelerometry and parental report of children's television (TV) viewing. Dual energy X-ray absorptiometry was used to quantify body composition... - Physical activity and bone measures in young children: the Iowa bone development studyK F Janz
Department of Health, Leisure, and Sport Studies, University of Iowa, Iowa City, IA 52242, USA
Pediatrics 107:1387-93. 2001..In this cross-sectional study, we examined associations between physical activity and bone measures in 368 preschool children (mean age: 5.2 years, range: 4-6 years)... - Tracking physical fitness and physical activity from childhood to adolescence: the muscatine studyK F Janz
Department of Sport, Health, and Leisure Studies, University of Iowa, Iowa City 52242, USA
Med Sci Sports Exerc 32:1250-7. 2000..provide insight as to when programs focusing on preventing sedentary adults behaviors should be initiated... - Physical activity and bone development during childhood and adolescence. Implications for the prevention of osteoporosisK Janz
Department of Health, Leisure, and Sport Studies, University of Iowa, Iowa City, IA, USA
Minerva Pediatr 54:93-104. 2002..Since it is a behavior, physical activity is a potentially modifiable determinant of peak bone mass; therefore, understanding activity's impact on bone health is central to developing primary prevention strategies for osteoporosis... - Predicting heart growth during puberty: The Muscatine StudyK F Janz
Department of Sport, Health, and Leisure Studies, University of Iowa, Iowa City 52242, USA
Pediatrics 105:E63. 2000.... - Everyday activity predicts bone geometry in children: the iowa bone development studyKathleen F Janz
Health and Sport Studies, The University of Iowa, Iowa City, IA 52242, USA
Med Sci Sports Exerc 36:1124-31. 2004..2 yr). We also examined whether lean tissue mass, which is predominantly muscle, mediates the relationship between physical activity and bone structural measures... - Longitudinal analysis of scaling VO2 for differences in body size during puberty: the Muscatine StudyK F Janz
Department of Sport, Health, and Leisure Studies, University of Iowa, Iowa City 52242, USA
Med Sci Sports Exerc 30:1436-44. 1998..The purpose of this study was to determine an appropriate method to "normalize" oxygen uptake (VO2) for body size in children and adolescents... - Gene polymorphisms, bone mineral density and bone mineral content in young children: the Iowa Bone Development StudyMarcia C Willing
Department of Pediatrics, Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
Osteoporos Int 14:650-8. 2003..Our data suggest that genetic variation at multiple genetic loci is important in bone accrual in children. Moreover, the combination of genotypes as several loci may be as important as a single genotype for determining BMD and BMC... - A hip analysis protocol for pediatric bone densitometry: the Iowa Bone Development StudyJulie M Eichenberger Gilmore
Department of Preventive and Community Dentistry, The University of Iowa, Iowa City, IA, USA
J Clin Densitom 13:361-9. 2010..The IBDS protocol provides a reproducible method for evaluating pediatric proximal femur DXA scans during growth... - Percentile distributions of bone measurements in Iowa children: the Iowa Bone Development StudyMarcia C Willing
Department of Pediatrics, Roy J and Lucille A Carver College of Medicine, Iowa City, IA 52242, USA
J Clin Densitom 8:39-47. 2005..Gender, age, and height are useful clinical predictors of BMD and BMC in young children... - The relationship between active living and health-related quality of life: income as a moderatorJana J Peterson
Department of Community and Behavioral Health, College of Public Health, University of Iowa, 1215 Westlawn, Iowa City, 52242, USA
Health Educ Res 21:146-56. 2006..Findings highlight the need for increased and specifically targeted promotion of active living interventions... - Paths to leisure physical activity among adults with intellectual disabilities: self-efficacy and social supportJana J Peterson
Oregon Health and Science University, Child Development and Rehabilitation Center, 3181 Sam Jackson Park Road, Portland, OR 97239, USA
Am J Health Promot 23:35-42. 2008..This study tested a path model that included perceptions of social support and self-efficacy for leisure physical activity and leisure physical activity participation among adults with intellectual disabilities... - Postoperative activity restrictions: any evidence?Larissa F Weir
Department of Obstetrics and Gynecology, San Antonio Uniformed Services Health Education Consortium, Texas, USA
Obstet Gynecol 107:305-9. 2006..Our aim was to describe intra-abdominal pressures during common physical activities... - The relationship between lower extremity strength and power to everday walking behaviors in older adults with functional limitationsMichael L Puthoff
St Ambrose University, Physical Therapy Department, Davenport, IA 52803, USA
J Geriatr Phys Ther 31:24-31. 2008..The purpose of this study was to examine the relationship between lower extremity strength, peak power, power at a low relative intensity, and power at a high relative intensity to everyday walking behaviors in older adults... - Calibration of accelerometer output for childrenPatty Freedson
Department of Exercise Science, University of Massachusetts, Amherst, MA 01003, USA
Med Sci Sports Exerc 37:S523-30. 2005..Important considerations for defining best practices for accelerometer calibration in children and youths are presented... - Impact of exercise on overnight glycemic control in children with type 1 diabetes mellitusEva Tsalikian
DirectNet Coordinating Center, Jaeb Center for Health Research, Tampa, Florida 33647, USA
J Pediatr 147:528-34. 2005..To examine the effect of exercise on overnight hypoglycemia in children with type 1 diabetes mellitus (T1DM)... - Function of the GlucoWatch G2 Biographer during exerciseEva Tsalikian
Diabetes Technol Ther 7:230. 2005 - Prevention of hypoglycemia during exercise in children with type 1 diabetes by suspending basal insulinEva Tsalikian
Diabetes Care 29:2200-4. 2006..CONCLUSIONS: Discontinuing basal insulin during exercise is an effective strategy for reducing hypoglycemia in children with type 1 diabetes, but the risk of hyperglycemia is increased...