Can self-reported tolerance of exercise intensity play a role in exercise testing?

Area of Science:

• Exercise Physiology
• Sports Science
• Human Performance

Background:

• Understanding factors influencing exercise duration is crucial for effective training.
• The ventilatory threshold is a key physiological marker during graded exercise tests.
• Individual differences in perceived exertion and tolerance may impact exercise adherence.

Purpose of the Study:

• To investigate the association between self-reported tolerance of exercise intensity and exercise perseverance.
• To determine if the Preference for and Tolerance of Exercise Intensity Questionnaire predicts time to volitional fatigue beyond the ventilatory threshold.

Main Methods:

• Two studies were conducted involving college-aged active individuals and middle-aged sedentary women.
• Participants underwent incremental treadmill tests to volitional fatigue.
• The Preference for and Tolerance of Exercise Intensity Questionnaire was used to assess self-reported tolerance.

Main Results:

• A significant relationship was found between exercise intensity tolerance and the duration of exercise performed after the ventilatory threshold.
• This association remained significant after controlling for covariates such as age, BMI, physical activity levels, and maximal aerobic capacity.

Conclusions:

• Self-reported exercise intensity tolerance is a potential predictor of exercise test duration and perseverance.
• Identifying individuals who may under- or overexert themselves can inform exercise testing and prescription strategies.
• This research highlights the importance of subjective factors in objective exercise assessments.