Sadness
Conditions
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.
Interventions
OTHERSwimming immediately after eating
After having the last bite of lunch, the participants will swim in the pool with a specific distance.
Sponsors
Herlev Hospital
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)
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.
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Occurrence of mortality | During swimming | Any adverse events leading to death |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Swimming time | During swimming | Measured by seconds |
| Discomfort | During the actual swimming and immediately after swimming is completed | Self-reported assessment of discomfort on a visual analogue scale. Minimum: 0. To Maximum: 100mm. Ranging from no discomfort to the worse imaginable discomfort. |
| Mood changes | Baseline and immediately after swimming | Measured by the Profile of mood states. A five-point scale indicating the level of affection. Minimum: 1. To Maximum: 5. |
| Number of patients with any adverse events | During and immediately after swimming is completed | Any adverse events other than already mentioned outcomes |
Countries
Denmark
Outcome results
None listed