Skeletal age in youth soccer players: implication for age verificationRobert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, Austin, Texas, USA
Clin J Sport Med 20:469-74. 2010
..To evaluate variation in skeletal age (SA) within single-year chronological age (CA) groups of soccer players aged 11 to 17 years in the context of using SA for age verification in age-group competitions...
- Physical activity: the present in the context of the past
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin and Research Professor, Tarleton State University, Stephenville, Texas, USA
Am J Hum Biol 20:373-91. 2008
....
- Physical activity in youth from a subsistence agriculture community in the Valley of Oaxaca, southern Mexico
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, TX, USA
Appl Physiol Nutr Metab 33:819-30. 2008
..Daily household chores, walking, and leisure activities suggest moderately active and moderately-to-vigorously active lifestyles in girls and boys, respectively, in this indigenous subsistence agricultural community...
- Secular change in the growth status of urban and rural schoolchildren aged 6-13 years in Oaxaca, southern Mexico
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, Texas 77414, USA
Ann Hum Biol 35:475-89. 2008
..Populations in the state of Oaxaca in southern Mexico are at high risk for malnutrition and marginalization...
- Socioeconomic variation in the growth status of urban school children 6-13 years in Oaxaca, Mexico, in 1972 and 2000
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin and Research Professor, Tarleton State University, Stephenville, Texas, USA
Am J Hum Biol 21:805-16. 2009
..The prevalence of stunting declined while the prevalence of overweight and to a lesser extent in obesity increased from 1972 to 2000, more so in low-middle and middle SES than in low SES children...
- Secular change in heights of indigenous adults from a Zapotec-speaking community in Oaxaca, southern Mexico
Robert M Malina
Professor Emeritus, Department of Kinesiology and Health Education, University of Texas at Austin and Research Professor, Tarleton State University, Stephenville, TX, USA
Am J Phys Anthropol 141:463-75. 2010
..Combining observations on adults with those for youth in the community indicated several phases of secular change in height that varied with years of birth...
- Secular change in muscular strength of indigenous rural youth 6-17 years in Oaxaca, southern Mexico: 1968-2000
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, and Tarleton State University, Stephenville, Texas, USA
Ann Hum Biol 37:168-84. 2010
..The study compared the grip strength of indigenous school youth 6-17 years of age in Oaxaca, southern Mexico, who were surveyed in 1968, 1978 and 2000...
- Age and secular effects on muscular strength of indigenous rural adults in Oaxaca, Southern Mexico: 1978-2000
Robert M Malina
Department of Kinesiology and Health Education, Tarleton State University, Stephenville, TX, USA
Ann Hum Biol 38:175-87. 2011
..To evaluate age and secular changes in strength of rural Zapotec adults in Oaxaca between 1978 and 2000...
- Early sport specialization: roots, effectiveness, risks
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, Austin, TX, USA
Curr Sports Med Rep 9:364-71. 2010
..Youth sport must be kept in perspective. Participants, including talented young athletes, are children and adolescents with the needs of children and adolescents...
Overweight and obesity among youth participants in American footballRobert M Malina
Tarleton State University, Stephenville, TX 77414, USA
J Pediatr 151:378-82. 2007
..To estimate the prevalence of overweight and obesity among participants in youth American football 9 to 14 years of age...
- Validation of a noninvasive maturity estimate relative to skeletal age in youth football players
Robert M Malina
Tarleton State University, Stephenville, Texas, USA
Clin J Sport Med 17:362-8. 2007
..To validate a non-invasive measure of biological maturity (percentage of predicted mature height at a given age) with an established indicator of maturity [skeletal age (SA)] in youth American football players...
- Epidemiologic transition in an isolated indigenous community in the Valley of Oaxaca, Mexico
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, TX 76402 0010, USA
Am J Phys Anthropol 137:69-81. 2008
....
- Overweight and obesity in a rural Amerindian population in Oaxaca, Southern Mexico, 1968-2000
Robert M Malina
Department of Health and Physical Education, Tarleton State University, Stephenville, Texas 76402, USA
Am J Hum Biol 19:711-21. 2007
..Overweight, in particular, and to a lesser extent obesity have increased in prevalence among adults since the late 1970s. The results suggest adulthood as a critical period for onset of overweight and obesity in this sample...
- Secular change in height and weight of indigenous school children in Oaxaca, Mexico, between the 1970s and 2007
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, Austin, TX, USA
Ann Hum Biol 38:691-701. 2011
..Information on secular change in indigenous children in Oaxaca, southern Mexico, is limited...
- Natural selection and demographic transition in a Zapotec-speaking genetic isolate in the Valley of Oaxaca, southern Mexico
Bertis B Little
Tarleton State University, Stephenville, Texas 76402 0010, USA
Ann Hum Biol 35:34-49. 2008
..The study analyzed the potential for natural selection and the demographic transition in an isolated Amerindian population in the process of secular change in body size...
- Maturity status of youth football players: a noninvasive estimate
Robert M Malina
Tarleton State University, Stephenville, TX, USA
Med Sci Sports Exerc 37:1044-52. 2005
..To estimate the biological maturity status of youth football players 9-14 yr old using a noninvasive method and to compare the body size of players of contrasting status...
- Incidence and player risk factors for injury in youth football
Robert M Malina
Tarleton State University, Stephenville, TX, USA
Clin J Sport Med 16:214-22. 2006
..To estimate the incidence of injuries in youth football and to assess the relationship between player-related risk factors (age, body size, biological maturity status) and the occurrence of injury in youth football...
- Growth status and estimated growth rate of youth football players: a community-based study
Robert M Malina
Tarleton State University, Stephenville, TX, USA
Clin J Sport Med 15:125-32. 2005
..To characterize the growth status of participants in community-sponsored youth football programs and to estimate rates of growth in height and weight...
- Gene-environment interaction in skeletal maturity and body dimensions of urban Oaxaca Mestizo schoolchildren
Bertis B Little
Tarleton State University, Stephenville, Texas 76402 0010, USA
Ann Hum Biol 34:216-25. 2007
..The study analyzed the relationship between skeletal age (SA) and the difference between skeletal and chronological ages (SA-CA) and body size among growth-stunted and well-nourished children...
Characteristics of youth soccer players aged 13-15 years classified by skill levelRobert M Malina
Tarleton State University, Stephenville, Texas, USA
Br J Sports Med 41:290-5; discussion 295. 2007
..To evaluate the growth, maturity status and functional capacity of youth soccer players grouped by level of skill...
- Craniofacial dimensions in children in rural Oaxaca, southern Mexico: secular change, 1968-2000
Bertis B Little
Department of Mathematics, Physics, and Engineering, Tarleton State University, Stephenville, Texas 76402, USA
Am J Phys Anthropol 131:127-36. 2006
....
- Body composition in athletes: assessment and estimated fatness
Robert M Malina
Tarleton State University, Stephenville, TX, USA
Clin Sports Med 26:37-68. 2007
..This article provides an overview of models and methods used for studying body composition, changes in body composition during adolescence and the transition into adulthood, and applications to adolescent and young adult athletes...
- Physical fitness of children and adolescents in the United States: status and secular change
Robert M Malina
Tarleton State University, Stephenville, TX, USA
Med Sport Sci 50:67-90. 2007
..The general trend may be consistent with the decline since the 1980s in aerobic performance assessed with the 20 m shuttle run. These trends highlight the need for updated national physical fitness data for American youth...
- TW3 and Fels skeletal ages in elite youth soccer players
Robert M Malina
Tarleton State University, Stephenville, Texas, USA
Ann Hum Biol 34:265-72. 2007
..Skeletal age (SA) tends to be advanced for chronological age (CA) in adolescent male soccer players...
- Marriage patterns in a Mesoamerican peasant community are biologically adaptive
Bertis B Little
Department of Mathematics, Tarleton State University, Stephenville, TX, USA
Am J Phys Anthropol 143:501-11. 2010
..While the results strongly support TWH, further studies in traditional anthropological populations are needed...
- Maturity-associated variation in sport-specific skills of youth soccer players aged 13-15 years
Robert M Malina
Research Professor, Tarleton State University, Stephenville, TX 77414, USA
J Sports Sci 23:515-22. 2005
..In conclusion, age, experience, body size and stage of puberty contributed relatively little to variation in performance in four of the six soccer-specific skill tests in adolescent footballers aged 13-15 years...
- Professor James M. Tanner and the sport sciences
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, Austin, TX, USA
Ann Hum Biol 39:372-81. 2012
..Growth at Adolescence was also a fixture in many graduate programs. Conclusion: Though not a sport scientist, Tanner contributed directly and indirectly to the field...
- Skeletal age and age verification in youth sport
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, Austin, TX, USA
Sports Med 41:925-47. 2011
..The risk of false negatives and false positives implies that SA is not a valid indicator of CA...
- Weight training in youth-growth, maturation, and safety: an evidence-based review
Robert M Malina
Tarleton State University, Stephenville, TX, USA
Clin J Sport Med 16:478-87. 2006
..To review the effects of resistance training programs on pre- and early-pubertal youth in the context of response, potential influence on growth and maturation, and occurrence of injury...
- Interrelationships among invasive and non-invasive indicators of biological maturation in adolescent male soccer players
Robert M Malina
Department of Kinesiology and Health Education, University of Texas at Austin, Austin, Texas, USA
J Sports Sci 30:1705-17. 2012
..Non-invasive indicators of maturity status have limitations for this purpose...
- Inbreeding avoidance in an isolated indigenous Zapotec community in the valley of Oaxaca, southern Mexico
Bertis B Little
Department of Mathematics, Physics, and Engineering, Tarleton State University, Stephenville, TX 76402-0010, USA
Hum Biol 77:305-16. 2005
..However, among the poorest individuals, socially prescribed jural rules for inbreeding avoidance failed to operate. Thus the preponderance of inbreeding appears to occur among the poor, economically disadvantaged in the community...
- Maturity offset in gymnasts: application of a prediction equation
Robert M Malina
Tarleton State University, Stephenville, TX, USA
Med Sci Sports Exerc 38:1342-7. 2006
..To verify the applicability of the prediction equation for maturity offset in a sample of female gymnasts followed longitudinally through adolescence...
- Physical activity and fitness in an international growth standard for preadolescent and adolescent children
Robert M Malina
Tarleton State University, Stephenville, Texas, USA
Food Nutr Bull 27:S295-313. 2006
..The review concludes with specific recommendations for and limitations of inclusion of indicators of physical activity and fitness in the construction of an International Growth Standard for Preadolescent and Adolescent Children...
- Growth and weight status of rural texas school youth
Mary Duran
Department of Nursing, Tarleton State University, Stephenville, TX 76402 0010, USA
Am J Hum Biol 25:71-7. 2013
..Evidence indicates higher prevalence of obesity in rural American youth. The present study evaluates the growth status and estimates the prevalence of overweight and obesity among rural school children in Texas...
- National athletic trainers' association position statement: preventing, detecting, and managing disordered eating in athletes
Christine M Bonci
The University of Texas at Austin, Austin, TX, USA
J Athl Train 43:80-108. 2008
..To present recommendations for the prevention, detection, and comprehensive management of disordered eating (DE) in athletes...
- Estimated maturity status and perceptions of adult autonomy support in youth soccer players
Sean P Cumming
Department of Psychology, University of Washington, Seattle, WA 98195 1525, USA
J Sports Sci 24:1039-46. 2006
..Age and body mass index were unrelated to perceptions of adult (i.e. coach, mother, father) autonomy support in male and female players...
- Adolescent growth spurts in female gymnasts
Martine Thomis
Department of Sport and Movement Sciences, Faculty of Kinesiology and Rehabilitation Sciences, Katholieke Universiteit Leuven, Leuven, Belgium
J Pediatr 146:239-44. 2005
..adolescent growth spurts in height, sitting height, and leg length? (2) Are the sequence and magnitude of spurts comparable with female adolescent non-athletes? (3) How do the data compare with other female gymnasts and with short girls?..
- Combined influence of body mass index and waist circumference on coronary artery disease risk factors among children and adolescents
Ian Janssen
Department of Community Health and Epidemiology, School of Physical and Health Education, Queen s University, Kingston, ON, K7L 3N6, Canada
Pediatrics 115:1623-30. 2005
....
- Evidence based physical activity for school-age youth
William B Strong
Department of Pediatrics, Medical College of Georgia, Augusta, Georgia, USA
J Pediatr 146:732-7. 2005
..To review the effects of physical activity on health and behavior outcomes and develop evidence-based recommendations for physical activity in youth...
- Utility of childhood BMI in the prediction of adulthood disease: comparison of national and international references
Ian Janssen
School of Physical and Health Education, Queen's University, Kingston, Ontario, Canada K7L 3N6
Obes Res 13:1106-15. 2005
..The differences in the predictive capacity of the CDC Reference and IOTF Reference are, however, minimal...
- Sports participation among Portuguese youth 10 to 18 years
André F Seabra
Faculty of Sports, University of Porto, Porto, Portugal
J Phys Act Health 4:370-80. 2007
..The present study considered age- and sex-associated variation in sports participation (SP) in Portuguese youth...
- Urban-rural contrasts in the physical fitness of school children in Oaxaca, Mexico
Maria Eugenia Peña Reyes
Escuela Nacional de Antropologia e Historia, Mexico, DF
Am J Hum Biol 15:800-13. 2003
..The observed differences may be related to activity habits associated with school physical education and lifestyle in the respective communities...
- Maturity-associated variation in the body size and proportions of elite female gymnasts 14-17 years of age
Albrecht L Claessens
Faculty of Kinesiology and Rehabilitation Sciences, Department of Biomedical Kinesiology, Katholieke Universiteit Leuven, Leuven, Belgium
Eur J Pediatr 165:186-92. 2006
..The results highlight the need to consider maturity-associated variation in the body dimensions of gymnasts before attributing their characteristics to the demands of regular training...
- The relationship between peak height velocity and physical performance in youth soccer players
Renaat M Philippaerts
Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
J Sports Sci 24:221-30. 2006
..Trainers and coaches should be aware of the individual characteristics of the adolescent growth spurt and the training load should also be individualized at this time...
- Age at menarche in competitive figure skaters: variation by competency and discipline
Eva A Vadocz
Department of Physical Education, University of South Carolina, Columbia 29208, USA
J Sports Sci 20:93-100. 2002
..45 (P < 0.01). Later maturation was thus characteristic of competitive figure skaters, particularly in elite and more specialized pair skaters, and there was a significant familial resemblance...
- Factors affecting levels of physical activity in adults
Vern Seefeldt
Institute for the Study of Youth Sports, Michigan State University, East Lansing, Michigan 48823, USA
Sports Med 32:143-68. 2002
..The initiation and maintenance of regular physical activity in adults depends on a multitude of biological and sociocultural variables that demand attention across the lifespan...
- Physical activity and health-related physical fitness in Taiwanese adolescents
Yi-Ching Huang
Department of Physical Education, National Kaohsiung Normal University Kaohsiung, Taiwan
J Physiol Anthropol Appl Human Sci 21:11-9. 2002
....
- Sex differences in the pattern of age-dependent increase in the BMI from 20-59 years
Zygmunt Welon
Institute of Anthropology, Polish Academy of Sciences, Kuznicza 35, 50-951 Wroclaw, Poland
Am J Hum Biol 14:693-8. 2002
..This hypothesis was verified with a linear regression model in women but for men piecewise regression with a break at 40 years of age fits the age trends...
- Secular trend in peak oxygen consumption among United States youth in the 20th century
Joey C Eisenmann
School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
Am J Hum Biol 14:699-706. 2002
..The available data indicate that aerobic fitness has not decreased in United States youth except in adolescent girls over the past few decades...
- Growth in peak aerobic power during adolescence
Christina A Geithner
Department of Exercise Science, Gonzaga University, Spokane, WA 99258, USA
Med Sci Sports Exerc 36:1616-24. 2004
..To model the growth of peak aerobic power during adolescence in both sexes followed longitudinally from 10 to 18 yr...
- Body mass index, overweight and obesity in married and never married men and women in Poland
Anna Lipowicz
Institute of Anthropology, Polish Academy of Sciences, Wroclaw, Poland
Am J Hum Biol 14:468-75. 2002
..001), whereas educational level did not have a significant role. Among women, age, marital status, and education were significantly (P < 0.001) related to the BMI...
- Maturity-associated variation in the growth and functional capacities of youth football (soccer) players 13-15 years
Robert M Malina
Eur J Appl Physiol 91:555-62. 2004
..Training is a significant contributor to aerobic resistance, whereas weight and height are significant contributors to the sprint and vertical jump, respectively...
- Intraindividual allometric development of aerobic power in 8- to 16-year-old boys
Gaston Beunen
Department of Sport and Movement Sciences, Faculty of Physical Education and Physiotherapy, Katholieke Universiteit Leuven, Leuven, Belgium
Med Sci Sports Exerc 34:503-10. 2002
....
- Age- and sex-associated variation in neuromuscular capacities of adolescent distance runners
Joey C Eisenmann
School of Kinesiology and Health Science, 352 Bethune, York University, Toronto, Ontario M3J 1P3, Canada
J Sports Sci 21:551-7. 2003
..The magnitude of sex differences between the runners and the general population varied by age and neuromuscular capacity...
- Body mass index, waist circumference, and clustering of cardiovascular disease risk factors in a biracial sample of children and adolescents
Peter T Katzmarzyk
School of Physical and Health Education and Department of Community Health and Epidemiology, Queen s University, Kingston, Ontario, Canada
Pediatrics 114:e198-205. 2004
..To derive optimal body mass index (BMI) and waist circumference thresholds for children and adolescents, to predict risk factor clustering...
- Estimated daily energy expenditure and blood lipids in adolescents: the Québec Family Study
Joey C Eisenmann
York University School of Kinesiology and Health Science, Toronto, Ontario, Canada
J Adolesc Health 33:147-53. 2003
..To examine the association between estimated daily energy expenditure and blood lipids in a sample of adolescents...
- Influence of height on attained level of education in males at 19 years of age
Alicja Szklarska
Institute of Anthropology, Polish Academy of Science, Wrocław, Poland
J Biosoc Sci 39:575-82. 2007
..24, p<0.001; 1995: OR=1.24, p <0.001; 2001: OR=1.20, p<0.001). Two possible, not mutually exclusive, selective mechanisms are postulated and discussed: 'passive' and 'active' action...
- Indicators of biological maturation and secular changes in biological maturation
Gaston P Beunen
Department of Biomedical Kinesiology, Faculty of Kinesiology and Rehabilitation Sciences, Katholieke Universiteit Leuven, Leuven, Belgium
Food Nutr Bull 27:S244-56. 2006
..The review concludes with specific recommendations for the inclusion of a maturity indicator or maturity indicators in the construction of an international growth standard for preadolescent and adolescent children..
- Puberty and physical self-perceptions of competitive female figure skaters: an interdisciplinary approach
Eva V Monsma
Department of Physical Education, University of South Carolina, Columbia 29208, USA
Res Q Exerc Sport 77:158-66. 2006
..Skating context did not predict physical self-perceptions...
- Effect of physical education and activity levels on academic achievement in children
Dawn Podulka Coe
Department of Kinesiology, Michigan State University, East Lansing, MI, USA
Med Sci Sports Exerc 38:1515-9. 2006
..This study was conducted to determine the effect of physical education class enrollment and physical activity on academic achievement in middle school children...
- BMI and health-related physical fitness in Taiwanese youth 9-18 years
Yi Ching Huang
Department of Exercise and Health Science, National Taipei College of Nursing, Taipei, Taiwan
Med Sci Sports Exerc 39:701-8. 2007
..The purpose of the study was to evaluate the cross-sectional relationship between BMI and a physical fitness index (PFI) based on four indicators of fitness in a national sample of Taiwanese youth...
- Comparisons of physical characteristics and performances among female collegiate rowers
Rebecca A Battista
Department of Kinesiology, Michigan State University, East Lansing, MI, USA
J Sports Sci 25:651-7. 2007
..In conclusion, collegiate rowers differ to some extent in physical and performance characteristics by level and experience...
- Wrist pain, distal radial physeal injury, and ulnar variance in the young gymnast
John P DiFiori
Division of Sports Medicine, Department of Family Medicine, University of California, Los Angeles, 924 Westwood Blvd, Suite 725, Los Angeles, CA 90266, USA
Am J Sports Med 34:840-9. 2006
..This article provides a comprehensive review of these issues and offers suggestions for management, preventive measures, and future research...
- Blunted growth velocity in female artistic gymnasts
Gaston Beunen
Med Sci Sports Exerc 38:605; author reply 606. 2006
- The relative age effect in soccer: a match-related perspective
Roel Vaeyens
Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
J Sports Sci 23:747-56. 2005
..Our findings suggest that match-based variables may provide a more reliable indication of the relative age effect in soccer...
- Sex differences in exercise behavior during adolescence: is biological maturation a confounding factor?
Sean P Cumming
School for Health, University of Bath, Bath, United Kingdom
J Adolesc Health 42:480-5. 2008
..To test the hypothesis that sex-related differences in exercise behavior during adolescence are confounded by biological age...
