Cognitive and Autonomic Load Monitoring in Operations

Cognitive and Autonomic Load Monitoring in Operations - CALM-OP

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00039273

Enrollment

Registered

2026-02-17

Start date

2026-03-01

Completion date

Unknown

Last updated

2026-03-02

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

Conditions

Stress and Performance

Interventions

Group 1: Intervention group: The intervention group performs a breathing exercise with prolonged exhalation for 3 minutes before performing the training exercises on the DaVinci simulator. Group 2: Co

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Inclusion criteria are physicians or students, age 18 years or older, provision of written informed consent, and sufficient German language proficiency to ensure full understanding of the study information and instructions.

Exclusion criteria

Exclusion criteria: Exclusion criteria are age under 18 years and insufficient German language proficiency to ensure full understanding of the study information and instructions.

Design outcomes

Primary

Measure	Time frame
Hypothesis: Does relaxed breathing with an extended exhalation phase at the beginning of da Vinci simulator training reduce stress? Stress is measured using electrodermal activity (EDA) and heart rate variability (HRV) as real-time measurements during training on the da Vinci training simulator (SimNow 2). Subjective stress is then measured using the NASA-TLX questionnaire. H1: Heart rate variability (HRV) and electrodermal activity (EDA) correlate significantly and linearly with the subjectively perceived stress level (NASA-TLX) during the training exercises. H2: Participants who perform a video-guided breathing exercise (paced breathing) with 6 breaths per minute and an extended exhalation phase before the exercises show significantly lower stress levels (physiological and subjective) than the control group without intervention.	—

Measure

Time frame

Hypothesis: Does relaxed breathing with an extended exhalation phase at the beginning of da Vinci simulator training reduce stress? Stress is measured using electrodermal activity (EDA) and heart rate variability (HRV) as real-time measurements during training on the da Vinci training simulator (SimNow 2). Subjective stress is then measured using the NASA-TLX questionnaire. H1: Heart rate variability (HRV) and electrodermal activity (EDA) correlate significantly and linearly with the subjectively perceived stress level (NASA-TLX) during the training exercises. H2: Participants who perform a video-guided breathing exercise (paced breathing) with 6 breaths per minute and an extended exhalation phase before the exercises show significantly lower stress levels (physiological and subjective) than the control group without intervention.

—

Secondary

Measure	Time frame
H3: A moderate level of stress is associated with improved operational performance, whereas excessive stress leads to a reduction in performance. H4: Individual factors (e.g., prior experience and personal characteristics) modulate stress susceptibility and/or operational performance.	—

Countries

Germany

Contacts

Public ContactChristian Krambeck

Klinik für Gynäkologie und Geburtshilfe, UKSH Campus Kiel

christian.krambeck@uksh.de0049431/500-67501

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Mar 14, 2026