The Childhood Health, Activity, and Motor Performance School Study Denmark

Musculoskeletal problems (injuries, defined as inability to participate in sports)

时间窗: Total incidence of musculoskeletal problems across 2.5 years

Weekly short-message-service tracking of participants to determine severity, frequency and nature (acute/overuse) of injuries.

Body-mass index (kg/m^2)

时间窗: Change over 2 years

Calculated from measured height and weight

Body weight (kilograms)

时间窗: Change over 2 years

Standardized assessments performed by trained personal using an electronic scale.

Dual-energy X-ray absorptiometry (DXA) determined bone mineral content (grams)

时间窗: Change over 2 years

Standardized assessments performed by trained personal.

Height (centimeters)

时间窗: Change over 2 years

Standardized assessments performed by trained personal using a stadiometer.

Waist circumference (centimeters)

时间窗: Change over 2 years

Standardized assessments performed by trained personal at the level of the umbilical cord

DXA determined body fat (%)

时间窗: Change over 2 years

In subcohort only. Standardized assessments performed by trained personal.

Serum fasting total cholesterol (mmol/l)

时间窗: Change over 2 years

Standardized assessments performed by trained biomedical laboratory technicians. Fasting status affirmed verbally.

Serum fasting C-reactive protein (mg/l)

时间窗: Change over 2 years

Standardized assessments performed by trained biomedical laboratory technicians. Fasting status affirmed verbally.

Serum fasting insulin (IU/l)

时间窗: Change over 2 years

Standardized assessments performed by trained biomedical laboratory technicians. Fasting status affirmed verbally.

Serum fasting triglycerides (mmol/l)

时间窗: Change over 2 years

Standardized assessments performed by trained biomedical laboratory technicians. Fasting status affirmed verbally.

Homeostasis model assessment of insulin resistance (HOMA-IR)

时间窗: Change over 2 years

Calculated as fasting insulin (IU/l) x fasting glucose (mmol/l))/ 22.5

Agility (seconds)

时间窗: Change over 2.5 years

Measured by the 50 meter short-shuttle test. Standardized assessments performed by trained personal

Serum fasting glucose (mmol/l)

时间窗: Change over 2 years

Standardized assessments performed by trained biomedical laboratory technicians. Fasting status affirmed verbally.

Serum fasting low-density lipoprotein cholesterol (mmol/l)

时间窗: Change over 2 years

Standardized assessments performed by trained biomedical laboratory technicians. Fasting status affirmed verbally.

Resting systolic blood pressure (mmHg)

时间窗: Change over 2 years

Standardized assessments performed by trained personal

Precision throw (0-30 points)

时间窗: Change over 2.5 years

From ''Der Allgemeiner Sportmotorischer Test fur Kinder von 6-11 Jahren''

Serum fasting high-density lipoprotein cholesterol (mmol/l)

时间窗: Change over 2 years

Standardized assessments performed by trained biomedical laboratory technicians. Fasting status affirmed verbally.

Resting diastolic blood pressure (mmHg)

时间窗: Change over 2 years

Standardized assessments performed by trained personal

Backward balance (0-72 points)

时间窗: Change over 2.5 years

From the "Korperkoordinations Test fur Kinder". Standardized assessments performed by trained personal

Maximal vertical jump performance (centimeters)

时间窗: Change over 2.5 years

Standardized assessments performed by trained personal

Composite risk factor score (z-scores)

时间窗: Change over 2 years

Standardized (z-scores) values of HOMA-IR, triglycerides, cholesterol-fractions, systolic blood pressure, and cardiorespiratory fitness

Cardiorespiratory fitness (meters)

时间窗: Change over 2 years

Performance on indirect cardiorespiratory fitness test (Andersen-test). Standardized assessments performed by trained personal

Handgrip strength (kg)

时间窗: Change over 2.5 years

Maximal strength measured by a dynamometer. Standardized assessments performed by trained personal