The effects of smartphone use in the standing position on the neck, upper and lower limbs, and trunk

The effects of smartphone use in the standing position on the neck, upper and lower limbs, and trunk - The effects of smartphone use in the standing position on the neck, upper and lower limbs, and trunk

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000049514

Enrollment

Registered

2022-12-01

Start date

2023-01-01

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

Text neck

Interventions

Browse Youtube in a standing position for one minute

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1 Has had a smartphone for more than six months 2 They use one-handed flicking to input text on their smartphones 3 Target age group is 18-40 years old

Exclusion criteria

Exclusion criteria: Have musculoskeletal or neurological disorders that prevent safe implementation of standing postures

Design outcomes

Primary

Measure	Time frame
Moments on the neck when using a smartphone in a standing position	—

Countries

Japan

Contacts

Public ContactHironori Arii

Gunma University Hospital Rehabilitation

hiro-arii@gunma-u.ac.jp0272208655

Outcome results

None listed

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