Power and Endurance: Polar Opposites or Willing Partners?

Area of Science:

• Exercise Physiology
• Sports Science
• Molecular Biology

Background:

• Peak neuromuscular power and endurance are distinct exercise qualities, often considered mutually exclusive due to differing physiological demands and molecular signaling pathways.
• The 'interference effect' suggests resistance and endurance training induce antagonistic adaptations, limiting combined improvements.
• Understanding these interactions is crucial for optimizing training across diverse populations and performance goals.

Purpose of the Study:

• To review the evidence for interplay between peak neuromuscular power and endurance performance.
• To examine the molecular mechanisms underlying training adaptations for both qualities.
• To introduce the musculo-cardio-pulmonary exercise test (mCPET) as a tool to assess combined performance.

Main Methods:

• Literature review of studies on neuromuscular power and endurance.
• Analysis of molecular signaling pathways related to resistance and endurance training.
• Description of the musculo-cardio-pulmonary exercise test (mCPET).

Main Results:

• Evidence suggests reciprocation, not mutual exclusivity, between peak power and endurance.
• Distinct molecular pathways exist but can interact and potentially complement each other.
• The mCPET provides a unified measure of both peak power and endurance mediators.

Conclusions:

• Peak neuromuscular power and endurance performance are not opposing forces but can be developed concurrently.
• Molecular signaling pathways demonstrate potential for synergistic adaptations.
• The mCPET offers a comprehensive approach to evaluating exercise capacity, challenging traditional views of training specificity.