Theoretical and Practical Aspects of Different Cluster Set Structures: A Systematic Review

Area of Science:

• Sports Science
• Exercise Physiology
• Strength and Conditioning

Background:

• Fatigue accumulation during sets decreases repetition quality, which can hinder adaptations like power development.
• Intermittent rest within sets, defined as cluster sets (CS), can alleviate fatigue and maintain performance.
• Existing research on CS lacks uniform terminology and has primarily focused on power output.

Purpose of the Study:

• To systematically review the theoretical and practical aspects of different cluster set structures.
• To clarify the terminology surrounding cluster sets in scientific literature.
• To describe the acute and chronic responses to cluster sets and identify research gaps.

Main Methods:

• Systematic literature review of studies investigating cluster sets.
• Analysis of terminology and protocols used in cluster set research.
• Synthesis of findings on the effects of cluster sets on performance adaptations.

Main Results:

• Cluster sets, by incorporating intra-set rest, allow for better maintenance of repetition quality compared to traditional sets.
• Inconsistent terminology in the literature complicates comparisons between different cluster set protocols.
• The effects of cluster sets on strength and hypertrophy remain less explored than their impact on power output.

Conclusions:

• Standardized terminology for cluster sets is crucial for future research.
• Further investigation is needed to fully understand the impact of cluster sets on strength and hypertrophy adaptations.
• Cluster sets offer a potential strategy for managing fatigue and optimizing training outcomes.