Safer mountain climbing using the climbing heartbeat index

Area of Science:

• Sports Science
• Physiology
• Gerontology

Background:

• Increasing numbers of middle-aged and elderly individuals are participating in mountain climbing.
• A rise in climbing accidents has been observed, potentially linked to overly ambitious expedition plans.
• Individual fitness levels are critical for ensuring safety during mountain climbing expeditions.

Purpose of the Study:

• To develop a novel method for planning safe mountain climbing expeditions.
• To introduce the Climbing Heartbeat Index (CHI) as a measure of climber fitness.
• To correlate CHI with established physiological markers of fitness.

Main Methods:

• Developed a Climbing Heartbeat Index (CHI) based on the principle that climbing work equals potential energy gain.
• Assumed that the work expended during climbing is proportional to heart rate.
• Calculated CHI for 94 participants and analyzed its correlation with maximum oxygen uptake (.VO(2 max)).

Main Results:

• CHI values exhibited low standard deviations across participants.
• A significant negative correlation was found between CHI and maximum oxygen uptake (.VO(2 max)) (r = -0.934, P < 0.01).
• CHI values were characteristic of individual fitness levels and remained stable despite changes in load.

Conclusions:

• The Climbing Heartbeat Index (CHI) is a reliable indicator of an individual's fitness level for mountain climbing.
• CHI can be estimated from .VO(2 max), allowing for personalized and safer expedition planning.
• The CHI value, once determined, can be used repeatedly for future climbing plans, provided fitness levels remain consistent.