The physiological demand of pulling a rescue sled across the mud and the impact experience has on this task
Research output: Contribution to journal › Article
Objective: To quantify the physiological demand of pulling a rescue sled across estuary mud, and determine whether rescuer experience has an impact on the physiological demand of this task.
Methods: Forty participants walked 150 m in 3 minutes across estuary mud. Following 3 minute rest, they walked 150 m pulling a rescue sled (61 kg) in pairs (based on experience).
Results: Experienced rescuers had a total oxygen consumption approximately 24% lower than those inexperienced in the task. Relative oxygen consumption (V ̇O2) was significantly (p<0.05) greater in the non-experienced (mean [SD]; 42.90 [6.55] mL.kg-1.min-1) compared to the experienced group (32.85 [5.79] mL.kg-1.min-1) when controlled for pace. Required V ̇O2 for various speeds were predicted based on non-experienced participants and assessed for agreement. LoA (95%) mean ± difference was 0.0003 ± 3.48 mL.kg-1.min-1, with a CV of 2.30 %.
Conclusions: For tasks that require a high relative V ̇O2, such as mud rescue, the minimum level of fitness at entry should be based upon the metabolic demands measured on those who are inexperienced.
|Publication status||Published - 14 Mar 2017|
- The physiological demand of pulling a rescue sled
Rights statement: The final publication is available at IOS Press through http://dx.doi.org/10.3233/WOR-172487
Accepted author manuscript (Post-print), 318 KB, PDF document