this study aims to compare the effectiveness of a one-day versus two-day ALS recertification course in terms of knowledge retention, practical skills performance, participant satisfaction, and confidence.

demographic data will be collected, including participants' age, sex, specialty, prior ALS course completion, participation in resuscitation teams, last CPR performance, and total online learning hours (minimum 16 hours for the standard ALS course and 8 hours for the recertification course). All ALS courses (standard and recertification) will be conducted in accordance with the standardized curriculum, structure, and educational formats established by the European Resuscitation Council (ERC).

Assessments:

A. Knowledge Assessment B. Practical Skills Performance C. Participant satisfaction and confidence at the end of each course

• Scoring: 0 = Not performed/incorrect, 1 = Partially/performed with prompting, 2 = Performed correctly and independently.

Inclusion Criteria:

• Adult healthcare professionals (≥18 years) requiring ALS recertification, including doctors, nurses, and paramedics, who can attend the assigned course and follow-up assessments.

Exclusion Criteria:

• Participants will be excluded if they cannot attend the assigned course or decline consent.

demographic data will be collected, including participants' age, sex, specialty, prior ALS course completion, participation in resuscitation teams, last CPR performance, and total online learning hours (minimum 16 hours for the standard ALS course and 8 hours for the recertification course).

The individual participant data (IPD) generated in this study will not be made publicly available in order to protect participant confidentiality and comply with ethical regulations.