Resistance Training
Conditions
Keywords
resistance training, strength and conditioning, physical activity, athletic performance
Brief summary
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.
Interventions
OTHERDominant Limb Overcoming Isometric Conditioning Activity
Each session involved performing 3 sets of 3-second overcoming isometric split squats with a 3-minute rest between sets as a conditioning activity performed by the dominant limb.
OTHERNon-dominant Limb Overcoming Isometric Conditioning Activity
Each session involved performing 3 sets of 3-second overcoming isometric split squats with a 3-minute rest between sets as a conditioning activity performed by non-dominant limb.
Sponsors
Charles University, Czech Republic
University School of Physical Education, Krakow, Poland
The Jerzy Kukuczka Academy of Physical Education in Katowice
Study design
Allocation
NON_RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Intervention model description
The study was performed following a randomized, double-blind crossover design, where each participant performed two experimental sessions.
Eligibility
Sex/Gender
MALE
Age
18 Years to 35 Years
Healthy volunteers
No
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
\-
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Drop Jump Height | Immediately pre- and at 4th and 8th minute post-completion of conditioning activity. | Drop jump height estimated via take-off velocity performed on force plates. Participants performed 2 trials at each time-point. |
| Drop Jump Contact Time | Immediately pre- and at 4th and 8th minute post-completion of conditioning activity. | Drop jump contact time was estimated via time spent on the ground between drop and jump transition performed on force plates. Participants performed 2 trials at each time-point. |
| Drop Jump Reactive Strength Index | Immediately pre- and at 4th and 8th minute post-completion of conditioning activity. | Drop jump reactive strength index was estimated via jump height divided by the contact time performed on force plates. Participants performed 2 trials at each time-point. |
Countries
Poland
Outcome results
None listed