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Maturity and Motor Fitness (MMF)

This study has been completed.
Junior high school
Information provided by (Responsible Party):
Yohei Takai, National Institute of Fitness and Sports in Kanoya Identifier:
First received: July 31, 2012
Last updated: August 6, 2012
Last verified: August 2012
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.

Physical Fitness

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Cross-Sectional

Further study details as provided by National Institute of Fitness and Sports in Kanoya:

Primary Outcome Measures:
  • Body composition [ Time Frame: 1 day ]
    Bioelectrical impedence - percent body fat

Secondary Outcome Measures:
  • Muscle strength [ Time Frame: 1 day ]
    myometer- knee extension strength

Enrollment: 107
Study Start Date: March 2011
Study Completion Date: March 2012
Primary Completion Date: March 2011 (Final data collection date for primary outcome measure)
Junior high school student
All subjects participated in measurements of body composition, muscle strength and motor fitness

Detailed Description:
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.

Ages Eligible for Study:   156 Months to 167 Months   (Child)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Junior high school students

Inclusion Criteria:

  • adolescents

Exclusion Criteria:

  • subjects had some diseases and disorders
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Please refer to this study by its identifier: NCT01658423

Chosa junior high school
Kokubu, Kagoshima, Japan, 8995431
Sponsors and Collaborators
National Institute of Fitness and Sports in Kanoya
Junior high school
  More Information

Responsible Party: Yohei Takai, Assisstant Professor, National Institute of Fitness and Sports in Kanoya Identifier: NCT01658423     History of Changes
Other Study ID Numbers: NIFS-002
Study First Received: July 31, 2012
Last Updated: August 6, 2012

Keywords provided by National Institute of Fitness and Sports in Kanoya:
pubic hair
sprint velocity
vertical jump height
body composition
maximal voluntary torque processed this record on April 28, 2017