Upper Body Contribution During Leg Cycling Peak Power in Teenage Boys and Girls

Doré, Éric; Baker, Joe; Jammes, A.; Graham, Michael R.; New, Karl J.; Praagh, Emmanuel Van

doi:10.1080/15438620600985829

Cited by 14 publications

(14 citation statements)

References 16 publications

(30 reference statements)

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“…In this sample, the group mean PPO response (i.e., participants' best PPO from six sprints) was 723.1 § 180.3 watts. Our PPO data are similar to those reported for 17 year old boys performing a 30 s Wingate test against an identical resistive force of 0.075 kg kg ¡1 (707 § 114 watts) (Armstrong et al 2001), but lower than that reported on similar aged boys (1,409 § 197 watts) performing two 5 s cycling sprints (Dore et al 2006). Importantly, in Dore et al's study, the resistive force was 0.05 kg kg ¡1 .…”

Section: Discussionsupporting

confidence: 89%

The effect of anaerobic exercise on salivary cortisol, testosterone and immunoglobulin (A) in boys aged 15–16 years

et al. 2009

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This study investigated the effect of repeated bouts of short-term, high-intensity cycling exercise on the salivary cortisol, testosterone and immunoglobulin (A) concentrations of 15-16 year old boys. Seventeen apparently healthy schoolchildren (aged 15.5 +/- 0.4 years) participated in this study. All participants completed 6 x 8 s sprints, interspersed with 30 s recovery intervals on a cycle ergometer. Using the passive drool method, salivary samples were taken before, and 5 min after, exercise. The group mean for peak power output was 723.1 +/- 180.3 s. There were significant changes (p < or = 0.05) in both SalT and SalC, 5 min after completing 6 x 8 s cycle sprints. No significant differences (p > 0.05) were recorded for SIg(A). The increases in SalT and SalC reported in this study confirm that repeated bouts of short-term, high-intensity exercise produces significant physiological hormonal responses in adolescent boys, but does not affect mucosal immune function.

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Section: Discussionsupporting

confidence: 89%

The effect of anaerobic exercise on salivary cortisol, testosterone and immunoglobulin (A) in boys aged 15–16 years

et al. 2009

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“…With the start of puberty, testosterone starts to increase in boys leading to an increase in skeletal muscle mass whereas fat mass increases in girls [19]. Due to the higher muscle mass strength is higher in boys compared to girls [20,21]. Additionally, aerobic capacity will become higher in boys compared to girls [22] and endurance performance will be higher in body than in girls [23,24].…”

Section: Discussionmentioning

confidence: 99%

Relationship between age and elite marathon race time in world single age records from 5 to 93 years

Knechtle¹,

Assadi

Lepers

et al. 2014

BMC Sports Sci Med Rehabil

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BackgroundThe aims of the study were (i) to investigate the relationship between elite marathon race times and age in 1-year intervals by using the world single age records in marathon running from 5 to 93 years and (ii) to evaluate the sex difference in elite marathon running performance with advancing age.MethodsWorld single age records in marathon running in 1-year intervals for women and men were analysed regarding changes across age for both men and women using linear and non-linear regression analyses for each age for women and men.ResultsThe relationship between elite marathon race time and age was non-linear (i.e. polynomial regression 4th degree) for women and men. The curve was U-shaped where performance improved from 5 to ~20 years. From 5 years to ~15 years, boys and girls performed very similar. Between ~20 and ~35 years, performance was quite linear, but started to decrease at the age of ~35 years in a curvilinear manner with increasing age in both women and men. The sex difference increased non-linearly (i.e. polynomial regression 7th degree) from 5 to ~20 years, remained unchanged at ~20 min from ~20 to ~50 years and increased thereafter. The sex difference was lowest (7.5%, 10.5 min) at the age of 49 years.ConclusionElite marathon race times improved from 5 to ~20 years, remained linear between ~20 and ~35 years, and started to increase at the age of ~35 years in a curvilinear manner with increasing age in both women and men. The sex difference in elite marathon race time increased non-linearly and was lowest at the age of ~49 years.

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“…This is a little surprising with respect to the anaerobic energy used daily during infancy, childhood and adolescence. Indeed, during leisure-time activities or sport events, the child is spontaneously more attached to short-burst movements than to long-term activities (1,10).…”

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confidence: 99%

Time-of-Day Effects on Short-Term Exercise Performances in 10- to 11-Year-Old Boys

Souissi

Chaouachi

Chamari

et al. 2010

Pediatric Exercise Science

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The purpose of this study was to examine the time-of-day effects on short-term performances in boys. In a balanced and randomized study design, 20 boys performed four anaerobic tests of strength and power (grip strength, Squat-Jump, Five-jump and cycle Wingate tests) at 08:00, 14:00 and 18:00 hr on separate days. The results showed a time-of-day effect on oral temperature. Analysis of variance revealed a significant time-of-day effect for short-term performances for strength, cycle, and jump tests. The post hoc analysis revealed that performances improved significantly from morning to afternoon but no significant differences were noticed between 14:00 and 18:00 hr. The differences between the morning and the afternoon (the highest value measured either at 14:00 or at 18:00 hr) reached 5.9% for grip strength, 3.5% for the squat jump test, 5% for the five jump test, and 5.5% for P(peak) and 6% for P(mean) during the Wingate test. A significant positive correlation was found between temperature and short-term performances. In conclusion, a time-of-day effect in the child's maximal short-term exercise performances exists in relation with core temperature. Such variations would have pronounced effects when expressed in training programs and competitions.

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Upper Body Contribution During Leg Cycling Peak Power in Teenage Boys and Girls

Cited by 14 publications

References 16 publications

The effect of anaerobic exercise on salivary cortisol, testosterone and immunoglobulin (A) in boys aged 15–16 years

The effect of anaerobic exercise on salivary cortisol, testosterone and immunoglobulin (A) in boys aged 15–16 years

Relationship between age and elite marathon race time in world single age records from 5 to 93 years

Time-of-Day Effects on Short-Term Exercise Performances in 10- to 11-Year-Old Boys

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