Physiological Age—A Fundamental Principle

Crampton, C. Ward

doi:10.1080/23267224.1908.10650080

Cited by 31 publications

(7 citation statements)

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“…Median age of emergence of maxillary permanent teeth for females from selected populations: Zambian (Gillett, 1995a); South African (Zulu) (Suk, 1919 as recalculated by Friedlaender and Bailit, 1969); Ugandan (Krumholt et al, 1971); African-American and White (USA) (Garn et al, 1973b); Chinese (Hong Kong) (Lee et al, 1965); Native American (Pima) (Dahlberg and Menegaz-Bock, 1958); Thailand (Kamalanathan et al, 1960). but delayed dentition, whereas poor children had delayed growth and accelerated dentition. Matiegka (1921), Crampton (1908), and Spier (1918) showed that boys who were precocious in dentition were, on average, above the median for age in height and weight. Further, looking at a sample of 10,000 black and white boys and girls, 4.5-16.5 years of age in the United States, Garn et al (1973a) demonstrated that povertylevel children tend to be delayed in permanent tooth emergence.…”

Section: Discussionmentioning

confidence: 99%

Permanent tooth emergence among Zambian schoolchildren: a standard for the assignment of ages

Gillett

1998

Am. J. Hum. Biol.

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There is sufficient variation in the timing of permanent tooth emergence to warrant population specific standards. Due to the lack of reliable ages in rural Zambia, a tooth emergence standard is derived from an urban sample of 543 Zambian schoolchildren. The standard allows assignment of an age to a child based on the total number of permanent teeth emerged. As a way to evaluate the ability of the standard to assign correct ages to Zambian children, a randomly chosen test (10%) sample was withheld from the formation of the standard. Accuracy of the standard in assigning ages to children in both the test and main samples was assessed in ±0.5, ±1.0, and ±2.0 year intervals. Both the main and test samples were able to accurately assign correct ages within ±0.5 year ∼40% of the time and within ±1.0 year ∼65% of the time for both males and females. To further facilitate use in field settings, the standard was visually smoothed. Once again the accuracy of the standard was very similar when applied to the main and test samples. The smoothed standard was as accurate as the original standard. The smoothed standard is thus recommended for application to rural Zambian children of unknown or unreliable age. Am. J. Hum. Biol. 10:45–51, 1998. © 1998 Wiley‐Liss, Inc.

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Section: Discussionmentioning

confidence: 99%

Permanent tooth emergence among Zambian schoolchildren: a standard for the assignment of ages

Gillett

1998

Am. J. Hum. Biol.

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“…Despite the differences in maturation among children, chronological age remains the main criterion for equalizing the competition levels, but with limited efficiency (Malina, 2000). These differences in maturation among athletes or differences between chronological and biological age have been studied since the beginning of the 20 th century (e.g., Crampton, 1908), and have pointed out that maturational status had significant influences in physical fitness (Anderson & Ward, 2002;Backous, Farrow, & Friedl, 1990;Towlson, Cobley, Parkin, & Lovell, 2018), performance (Pieter, 2012), and body dimensions (Backous et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

Exploratory study on maturation and competition level in young karate practitioners

Branco¹,

VencesBrito²,

Seabra³

et al. 2019

Rev. artes marciales asiát.

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<p>Paring children improve the chance for success and reduce injury in sport. Despite the maturity differences between children, chronological age remains the main criterion to equalize competition levels, but with limited efficiency. However, in Karate, weight is also considered. We went to investigate the association between chronological age and maturational indicators and find simple models to put on reflection new ways to assess the maturity. Data were collected in 54 young Karate practitioners (age: 12.67 ± 2.49 years, experience: 4.99 ± 2.44 years, height: 150.45 ± 15.25 cm, weight: 43.09 ± 14, 17 kg, 20 girls). Age correlated significantly with self-observation of sexual maturation (rho = 0.838; <em>p </em>< 0.01), and it was possible to find simple regression models that have a moderate explanation in maturation, using only simple measurable variables such as the height, weight and arm circumference. These results should lead the competent entities to reflect on the way of pairing of the athletes in the competitions, in a fair way in terms of maturation.</p>

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“…Clampton et al (8) established the concept of physiological age using puberty development markers in children as an indicator of maturity.…”

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Study of Chilean Children’s Dental Maturation*

Flores

Sanhueza

Barboza

et al. 2010

Journal of Forensic Sciences

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In forensic science, determining a person's chronological age has become a challenge for researchers. Determining age using dental calcification is becoming increasingly important. The objective of this study is to estimate the dental age of the children's population in Region VIII, Chile. The sample was randomly taken from children under the care of the Faculty of Dentistry at the Universidad de Concepción in Chile. The study encompasses 159 children between 3 and 14 years of age. The dental age was determined following the Demirjian method. The Bland-Altman method was applied to establish the correlation. It was determined that the range between chronological and dental age is similar, and the degree of correlation between both ages is nearly perfect. In conclusion, the degree of correlation between the chronological and dental ages for each gender is also very good although it is slightly higher for females.

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Physiological Age—A Fundamental Principle

Cited by 31 publications

References 0 publications

Permanent tooth emergence among Zambian schoolchildren: a standard for the assignment of ages

Permanent tooth emergence among Zambian schoolchildren: a standard for the assignment of ages

Exploratory study on maturation and competition level in young karate practitioners

Study of Chilean Children’s Dental Maturation*

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