Effect of combined intake of iron supplement and protein on anemia-related indices

Effect of combined intake of iron supplement and protein on anemia-related indices - Effect of combined intake of iron supplement and protein on anemia-related indices

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000048585

Enrollment

Registered

2022-08-04

Start date

2022-08-22

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

Anemia

Interventions

Ingesting heme iron supplement (containing 12mg of iron) and protein powder (containing 25g of protein) everyday for 4 weeks. Ingesting heme iron supplement (containing 12mg of iron) everyday for 4

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: Female athletes who regularly train.

Exclusion criteria

Exclusion criteria: Those who currently take high amount of protein (more than 2g /kg(body weight)). Those who currently take iron or protein supplement. Those who have hemoglobin concentration less than 10 g/dL during the pre-screening and intervention phases.

Design outcomes

Primary

Measure	Time frame
Hemoglobin concentration	—

Secondary

Measure	Time frame
Hematocrit Blood cell count Reticulocyte count Ferritin concentration Serum iron concentration Total iron binding capacity Unsaturated iron binding capacity Hepcidin concentration	—

Countries

Japan

Contacts

Public ContactKumpei Tanisawa

Waseda University Faculty of Sport Sciences

tanisawa@waseda.jp04-2947-6745

Outcome results

None listed

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