Standards and predicted values of anaerobic threshold

Area of Science:

• Exercise Physiology
• Sports Science
• Human Performance

Background:

• Understanding anaerobic threshold (AT) is crucial for optimizing endurance training and ergonomic standards.
• Previous research has established AT's relationship with maximal oxygen uptake (VO2max) and submaximal exercise loads.
• Homogeneous groups of physically active individuals provide valuable data for establishing normative values.

Purpose of the Study:

• To determine predicted values for anaerobic threshold (AT) in physically active men.
• To establish evidence-based AT standards for both ergonomic applications and endurance training protocols.
• To develop a practical method for estimating AT without invasive physiological measurements.

Main Methods:

• Collected physiological data (body composition, VO2max, AT) from 125 physically active men.
• Analyzed correlations between AT, VO2max, and submaximal exercise parameters.
• Employed regression analysis to develop predictive models for AT based on exercise test results.

Main Results:

• Established mean values for body size, composition, and endurance indices in the study cohort.
• Found AT values in the group to be slightly above average but below those of elite endurance athletes.
• Identified significant correlations between AT and VO2max, PFO2, and submaximal load (p<0.01).

Conclusions:

• Recommended AT standards for ergonomics and endurance training should range from 55-65% of VO2max, not below 1800 cm3 O2 X min-1.
• Developed regression-based predicted values for AT, enabling estimation from submaximal exercise tests.
• Proposed a nomogram derived from AT and submaximal load (Lsubmax) for practical AT prediction during PWC170 tests.