Maturity and Motor Fitness

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

107 participants

Study Classification

OBSERVATIONAL

Study Start Date

2011-03-31

Study Completion Date

2012-03-31

Brief Summary

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The current study examined the effect of maturity on the sprint and jump performances in a single year age group of 13 year old boys.

Detailed Description

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The investigators examined the issue in adolescent boys (n = 107) aged from 13.0 to 13.9 years. The maturity status was assessed using a self-assessment of stage of pubic hair based on the criteria of Tanner. Body composition and maximal voluntary knee extension torque (KET) were determined using a bioelectrical impedance analyzer and a static myometer, respectively. Sprint velocity was measured by a non-motorized treadmill. Jump height was calculated from the following equation; g × (flight time)2 × 8 × 10-1. The flight time during jumping was measured by a matswitch system.

Conditions

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Physical Fitness

Keywords

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pubic hair sprint velocity vertical jump height body composition maximal voluntary torque

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Junior high school student

All subjects participated in measurements of body composition, muscle strength and motor fitness

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* adolescents

Exclusion Criteria

* subjects had some diseases and disorders

Minimum Eligible Age

156 Months

Maximum Eligible Age

167 Months

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Responsible Party

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Yohei Takai

Assisstant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Chosa junior high school

Kokubu-matsuki, Kagoshima-ken, Japan

Site Status

Countries

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Japan

References

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Armstrong N, Welsman JR, Chia MY. Short term power output in relation to growth and maturation. Br J Sports Med. 2001 Apr;35(2):118-24. doi: 10.1136/bjsm.35.2.118.

Reference Type BACKGROUND

PMID: 11273974 (View on PubMed)

Other Identifiers

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NIFS-002

Identifier Type: -

Identifier Source: org_study_id