Background: Spontaneous use of the upper extremities on the affected side of patients with stroke is a meaningful indicator of recovery and may vary by the age or dominant hand of patients. No prior study has reported changes in actual amount of use test (AAUT) and motor activity log (MAL)-28 according to age and handedness in healthy adults, and AAUT inter-rater reliability for assessment of healthy adults.
Objects: This study aimed to (1) research the differences in AAUT and MAL-28 according to age and handedness in healthy adults, and (2) determine the inter-rater reliability of the AAUT.
Methods: Seventy healthy adults participated in this study. The MAL-28 was assessed by dividing 61 subjects into young right-handed (n1=20), young left-handed (n2=21), and older right-handed (n3=20) groups. The AAUT was assessed by dividing 63 subjects into young right-handed (n1=25), young left-handed (n2=18), and older right-handed (n3=20) groups. Student’s t-test and the Wilcoxon signedrank test were used for statistical analysis.
Results: The Amount of Use (AOU) scale values for each group showed no significant differences between age groups and handedness groups in the MAL-28 (p>.05). The AAUT AOU scale value showed significant differences regarding dominant handedness in the AAUT (p<.05), but no significant differences according to age (p>.05). (2) Inter-rater reliability of the AAUT was excellent, except few items (item 9, 11, and 12).
Conclusion: Although both the MAL-28 and the AAUT measured how much participants used their dominant arms in healthy subjects, the AAUT only showed significantly higher dominant arm use in left hander than the right hander. In addition, the inter-rater reliability of the AAUT was excellent. Current results can be utilized as a basic information when clinicians develop rehabilitation strategies, and AAUT was shown to be a reliable evaluation tool for measurement of upper extremity use in Korean adults, based on the reliability demonstrated by this study.

Abstract
 Ⅰ. 서론
 Ⅱ. 연구방법
  1. 연구대상자
  2. 평가도구
  3. 실험방법
  4. 통계 방법
 Ⅲ. 결과
  1. MAL-28과 AAUT 그룹 간 차이
  2. AAUT의 평가자간 신뢰도
 Ⅳ. 고찰
 Ⅴ. 결론
 References

• 김경현(전주대학교 의과학대학 물리치료학과) | Kyeong-hyeon Kim (Dept. of Physical Therapy, College of Medical Science, Jeonju University)
• 신유미(전주대학교 의과학대학 물리치료학과) | Yu-mi Shin (Dept. of Physical Therapy, College of Medical Science, Jeonju University)
• 임미유(전주대학교 의과학대학 물리치료학과) | Mi-yu Lim (Dept. of Physical Therapy, College of Medical Science, Jeonju University)
• 정유창(전주대학교 의과학대학 물리치료학과) | Yu-chang Jung (Dept. of Physical Therapy, College of Medical Science, Jeonju University)
• 오지은(전주대학교 의과학대학 물리치료학과) | Ji-eun Oh (Dept. of Physical Therapy, College of Medical Science, Jeonju University)
• 김수진(전주대학교 의과학대학 물리치료학과) | Su-jin Kim (Dept. of Physical Therapy, College of Medical Science, Jeonju University) Corresponding author