Associations between serum vitamin D Level with physical activity and cardiorespiratory fitness in healthy adults

Associations between serum vitamin D Level with physical activity and cardiorespiratory fitness in healthy adults - serum vitamin D Level and physical activity and cardiorespiratory fitness

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000007853

Enrollment

Registered

2012-04-27

Start date

2012-04-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Vitamin D Deficiency

Interventions

Vitamin D3 Placebo

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1.Age between 20-69 years 2.Gives informed consent, agrees to be randomly assigned

Exclusion criteria

Exclusion criteria: 1.Use of tanning booths or other artificial UV light exposure 2.History or presence of diabetes, heart, liver and kidney diseases, and stoke, eating disorders, gastrointestinal disorders, osteoporosis, pregnancy or lactation 3.Taking vitamin D supplement or 1,25 vitamin D 4.Physician has placed a restriction on physical exercise

Design outcomes

Primary

Measure	Time frame
Cardiorespiratory fitness,Muscular strength and power,25(OH)D	—

Secondary

Measure	Time frame
Physical activity, Body composition, Inflammatory markers, Bone mineral density,Cardiometabolic risk factors	—

Countries

Japan

Contacts

Public ContactZhen-Bo Cao

Waseda University Faculty of Sport Science

zb.cao@aoni.waseda.jp04-2947-4614

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026