Clinical trial NCT05401396: Swimming Immediately After Having a Meal
Official title: Swimming Immediately After Having a Meal: a Randomized Controlled Study
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Sadness
Lead sponsor: Herlev Hospital
Sponsor class: OTHER
First posted: 2022-06-02
Enrollment: 27
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Intervention model description: Each participant will on the first day of the trial be randomized either to swim in a pool immediately after lunch or to wait 30 minutes before swimming. The participants will do the opposite on the second day of the trial. The randomization will be done by throwing a dice.
Primary purpose: OTHER

Brief summary: Many believe that it is unsafe to swim immediately after having a meal and that it is preferable to wait at least 30 minutes. The fear is that swimming can cause stomach cramps and muscle cramps with discomfort and potentially drowning.

With this randomized controlled trial, the aim was to investigate whether there was any hold in this belief and what could potentially happen by swimming with the stomach full immediately after a meal.

Detailed description: All volunteers will be adults. Participants will receive both oral and written information about the trial prior to giving consent for participation.

Participants will act as their own control over two days. On the first day, participants will be randomized to either swim immediately after they have eaten their usual lunch or 30 minutes after the last bite. They will do the opposite on the second day. The randomization will be done by throwing a dice.

Prior to swimming, participants will fill out the following:

* Visual analogue scale (VAS) about their well-being
* Questionnaire about their mood state

After swimming, participants will fill out the following:

* Visual analogue scale (VAS) about their well-being
* Questionnaire about their mood state
* Adverse events

Prior to swimming and afterwards, the participants' blood pressure, pulse, and blood oxygen levels will be measured.

Sample size: Convenience sample.

Withdrawal and dropout criteria: All participants will be informed that they can withdraw their consent at any point during the trial without having to explain any reasons.

Eligibility criteria: Inclusion Criteria:

* ≥18 years
* Healthy volunteers
* Otherwise, no restriction since each participant acts as their own control

Exclusion Criteria:

* Smoking one hour prior to swimming
* Participants who cannot swim

Primary outcomes:
measure: Occurrence of mortality
timeFrame: During swimming
Secondary outcomes:
measure: Swimming time
timeFrame: During swimming
measure: Discomfort
timeFrame: During the actual swimming and immediately after swimming is completed
measure: Mood changes
timeFrame: Baseline and immediately after swimming
measure: Number of patients with any adverse events
timeFrame: During and immediately after swimming is completed
Other outcomes:
Locations:
city: Herlev
country: Denmark
facility: Center for Perioperative Optimisation, Department of Surgery, Herlev og Gentofte Hospital, University of Copenhagen
Study officials:
References: