Effects of Isometric Conditioning Activity on Subsequent Jumping Performance in Volleyball Players

The Jerzy Kukuczka Academy of Physical Education in Katowice

Status: Completed

Conditions: Resistance Training

Treatments: Other: Non-dominant Limb Overcoming Isometric Conditioning Activity; Other: Dominant Limb Overcoming Isometric Conditioning Activity

Study type: Interventional

Funder types: Other

Identifiers

NCT06459050

PRIMUS 22/HUM/019

Details and patient eligibility

About

The pairing of high-effort exercise, called conditioning activity, with a biomechanically similar high-velocity power movement is considered a valid method to effectively facilitate muscle power adaptations. Research has mainly focused on using this method in exercises performed by both limbs, even though sports tasks are often executed through motion sequences produced by a single limb alternately. However, available studies have focused solely on the dominant leg, leaving it unclear if the effectiveness is similar in both legs and how it transfers between them. Therefore, this study aims to evaluate the immediate effects of the isometric split squat exercise on single-leg drop jump performance in volleyball players, considering their training status.

Enrollment: 20 patients

Sex: Male

Ages: 18 to 35 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• no lower-limb serious injury, including tendon or muscle tear,
• participation in regular resistance training and competition.
• for the elite group participants competed at the highest national volleyball league for at least two consecutive seasons.
• for the amateur group participants competed in junior groups outside the highest league level.

Exclusion criteria

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Crossover Assignment

Masking: Double Blind

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20 participants in 2 patient groups

Dominant Limb Conditioning Activity

Experimental group

Description:

Each participant performed a single-leg drop jump for both the dominant and non-dominant limbs before and after completing the CA.

Treatment:

Other: Dominant Limb Overcoming Isometric Conditioning Activity

Non-dominant Limb Conditioning Activity

Experimental group

Description:

Each participant performed a single-leg drop jump for both the non-dominant and non-dominant limbs before and after completing the CA.

Treatment:

Other: Non-dominant Limb Overcoming Isometric Conditioning Activity