Body Temperature Changes, Heat Stress
Conditions
Brief summary
The aim of the study is to study the thermoregulatory responses under real life conditions, such as during wheelchair rugby and basketball matches. A further goal is to develop and validate a standardised field-based protocol, which induces the same thermoregulatory response as during a wheelchair rugby and basketball match. This knowledge allows to investigate strategies to reduce heat stress and to enhance exercise performance (e.g. pre-cooling) in the future, based on standardised conditions.
Detailed description
A spinal cord injury leads to several physiological changes and complications, which might influence exercise performance (Perret and Abel, 2016). One major problem is the limited thermoregulation, especially in subjects suffering from a tetraplegia (Griggs et al., 2015; Price et al., 2006). There are only few studies, which investigated the thermoregulatory response during real life conditions in wheelchair athletes such as during a wheelchair rugby match (Griggs et al., 2017). However, to implement strategies to reduce heat stress (e.g. precooling methods) or to determine the influence of heat stress on exercise performance and to determine the effects of specific interventions the following two issues seem to be a prerequisite: First of all, we need to understand, which thermoregulatory response is induced under real life conditions, e.g. by a wheelchair rugby or basketball match. Second, if we want to study the effects of potential interventions, a standardised and reliable study protocol has to be available, which closely mimics match conditions and induces a similar amount of heat stress. Thus, the aim of the study is to measure thermoregulatory and physical performance outcomes during a real life wheelchair rugby and basketball match. A further goal is to develop and validate a standardised field-based protocol, which induces a similar thermoregulatory response as during a wheelchair rugby or basketball match. These knowledge builds the basis for future thermoregulatory studies based on a reliable and standardised field-based testing protocol.
Interventions
None listed
Sponsors
Swiss Paraplegic Research, Nottwil
Study design
Observational model
OTHER
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes
Inclusion criteria
* Informed consent as documented by signature * healthy, male or female wheelchair rugby (with tetraplegia) or basketball player (with paraplegia) of national or international level * regularly taking part in competitions/games * age between 18 and 60 years
Exclusion criteria
* asthma * blood disorders * actual injury, which impairs performance or other impossibility to exercise to exhaustion * cardiovascular disease * gastrointestinal disease, disorder or former surgery concerning the gastrointestinal tract * not able to swallow a capsule * less than 40kg of body mass * MRI during the period of use of the e-Celsius® device
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in body core temperature | from 0 minutes to 32 minutes (cohort 1) or 48 minutes (cohort 2) | recording body core temperature with an electronic capsule from the beginning to the end of a rugby or basketball game |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in heart rate | from 0 minutes to 32 minutes (cohort 1) or 48 minutes (cohort 2) | heart rate from the beginning to the end of a rugby or basketball game |
| covered distance | 32 minutes (cohort 1) or 48 minutes (cohort 2) | covered distance (meters) during a rugby or basketball game |
| Change in body weight | 32 minutes (cohort 1) or 48 minutes (cohort 2) | difference in weight (kg) from before to after the game due to sweating and convection |
Countries
Switzerland
Outcome results
None listed