Correlation of performance in track and fieldevents with bone age

Cumming, Gordon R.; Garand, Theresa; Borysyk, L.

doi:10.1016/s0022-3476(72)80009-x

Cited by 24 publications

(8 citation statements)

References 9 publications

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“…Among male athletes, elite junior athletes are generally average to advanced in terms of biological maturity [6], but this advantage in biological maturity relative to chronological age decreases as young athletes become older [26]. While chronological age has often been thought to be the best predictor of when an athlete will reach peak performance, differences in maturational pace have been suggested to be a better predictor of the peak performance timeline [9]. Interestingly, of seven studies published between 1995 and 2014 that have specifically examined performances in the transition from junior to senior age levels in elite track and field [15, 21-23, 34, 36, 40], only the Hollings (2014) study mentions the concept of maturational pace or early physiological peaking as a potential contributing factor.…”

Section: Discussionmentioning

confidence: 99%

Career Performance Progressions of Junior and Senior Elite Track and Field Athletes

Foss

Sinex

Chapman

2019

J. of SCI. IN SPORT AND EXERCISE

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Purpose To compare and assess differences in the career performance progressions of elite junior and Olympic track and field athletes. Methods Annual best performances from top 8 men and women (e.g. finalists) in track and field events at the 2000 World Junior Championships (junior cohort) and the 2000 Olympic Games (Olympic cohort) were examined. Annual bests of these finalists were tracked each year from select groups: sprints (100 m, 200 m), distance (1500 m, 5000 m), jumps (long jump, high jump), throws (discus, shot put). Age of best lifetime performance, age of final posted performance, and improvement from junior-age best to lifetime best performance were compared between groups. Results Olympic finalists achieved lifetime best performances at later ages than junior finalists [26.0 ± 4.0 years vs. 21.1 ± 3.5 years; age difference 90% CI (3.7-5.2 years), P < 0.001], and this significant age difference between cohorts was found within all four groups. Olympic finalists improved from under-20 best to lifetime best more so than junior finalists [6.1 ± 4.8% vs. 2.5 ± 2.3%; Age difference 90% CI (2.5-4.8%), P < 0.001]. Of 130 junior finalists, 54 did not improve after age 19, while 19 of 128 Olympic finalists posted no improvement after age 19. Conclusion The data suggest that these two populations have different career performance progressions and challenge the notion that achieving elite success as a junior athlete is a prerequisite for the same success at the senior level.

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Section: Discussionmentioning

confidence: 99%

Career Performance Progressions of Junior and Senior Elite Track and Field Athletes

Foss

Sinex

Chapman

2019

J. of SCI. IN SPORT AND EXERCISE

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“…A delay in puberty and hypogonadism may be seen with severe malnutrition in boys (86). Unlike the situation for girls, sexual immaturity does not appear to correlate with a better athletic performance, in fact superior athletes among boys tend to have more advanced bone ages (87). Thus, boys may be better prepared physically for metabolic demands during the development of reproductive maturity although parallel studies in boys similar to those recently reported on girls have not been carried out.…”

Section: Male Reproductive Alterationsmentioning

confidence: 95%

Effects of Undernutrition on Reproductive Function in the Human*

Warren

1983

Endocrine Reviews

193

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A NUMBER of syndromes have recently been described which are associated with undernutrition and altered reproductive function. The syndromes described in women which include anorexia nervosa, amenorrhea associated with weight loss, bulimia, amenorrhea which occurs after oral contraceptives, postpartum amenorrhea, and amenorrhea associated with exercise all have hormonal patterns suggestive of hypothalamic alterations. Although the mechanisms are unknown, these problems appear to involve abnormalities affecting the central regulatory mechanism responsible for gonadotropin secretion, particularly those regulating pulse frequency, pulse amplitude and sleep associated patterns. These syndromes represent excellent models for the study and understanding of these important hypothalamic mechanisms as well as models for the understanding of puberty and the maturation of the pubertal hypothalamic-pituitary gonadal axis.

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“…The reported correlations between SA and muscle widths during pubescence would be expected from the known associations in each sex between SA and motor performance. In each sex, the associations between SA and performance are reduced, but not eliminated, when the effects of stature and weight are removed (Beunen et al, 1978(Beunen et al, ,1981Bouchard et al, 1978;Carron and Bailey, 1974;Cumming et al, 1972;Malina and Bouchard, 1991). Additionally, Blimkie et al (1992) have reported a low negative correlation between total body bone mineral and age at menarche (r = -0.28).…”

Section: Discussionmentioning

confidence: 99%

Relationship of skeletal age to limb composition during pubescence

1996

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The relationships between skeletal age (SA) and limb composition (arms, legs, and all four limbs) in terms of fat mass (FM), fat-free mass (FFM), muscle mass (MM) and bone mineral content (BMC) were investigated in 55 males and 53 females aged 9-15 years. The Fels method was used to assess hand-wrist SAs which were expressed as SNchronological age (SNCA). The limb composition data were obtained from a Lunar dual-energy x-ray absorptiometer using 3.62 software. The means for the limb composition variables increased gradually with age except in males for whom FM decreased from 12 t o 13 years, and FFM and MM increased markedly from 13 to 14 years. There were similar findings when the limb composition data were expressed as percentages of body weight. All of the regressions of SNCA on limb composition variables had positive slopes. Each of the slopes was significant for males, but nonsignificant for females. o 1996 WiIey-Liss, Inc.

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Correlation of performance in track and fieldevents with bone age

Cited by 24 publications

References 9 publications

Career Performance Progressions of Junior and Senior Elite Track and Field Athletes

Career Performance Progressions of Junior and Senior Elite Track and Field Athletes

Effects of Undernutrition on Reproductive Function in the Human*

Relationship of skeletal age to limb composition during pubescence

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