Stress and recovery perception, creatine kinase levels, and performance parameters of male volleyball athletes in a preseason for a championship

Abstract

Background: Training load and adequate recovery have been identified as essential elements to improve wellbeing and performance in team sports and avoid non-functional overreaching and overtraining. Objective: This cohort study sought to analyze the stress and recovery perceptions, creatine kinase levels (CK), and vertical jump performance of volleyball athletes at different training times during a championship preseason. Methods: Thirteen high-level male volleyball players (23.80 ± 5.40 years, 91.50 ± 8.80 kg, and 193.10 ± 6.40 cm) completed the RESTQ-Sport questionnaire on stress and recovery perception, and blood samples were collected to evaluate CK levels. These measures were performed six times over 16 weeks, while jumps such as squat jump (SJ), countermovement jump (CMJ), and countermovement jump arm (CMJA) were performed at three of those times for specific performance evaluation. Results: The stress perception and recovery perception indices increased and decreased, respectively, in the precompetitive phase, while CK levels presented an initial rise, maintenance over the training period, and a drop. Vertical jump heights increased significantly throughout the preparatory period regardless of the type of jump. In all training phases, CMJA values exceeded CMJ and SJ values, and CMJ values exceeded SJ values. Conclusions: Positive adaptations were elicited by training stimuli, resulting in improvements in performance. Conversely, load training variables indicated higher levels of stress and muscle damage, together with lower perceptions of recovery during the championship preseason.

Relationships between Fitness Status and Blood Biomarkers in Professional Soccer Players

“…Our study revealed that CMJ with hands on hips, and CMJ with free hands increased significantly after the PS phase. These results were verified by recent researches that showed that CMJ performance was improved after PS [ 7 , 58 , 72 , 76 ]. However, results are inconsistent since recent studies found no improvements in CMJ performance in team sports athletes [ 77 – 80 ].…”

Relationships of the 5-Jump Test (5JT) Performance of Youth Players With Volleyball Specific’ Laboratory Tests for Explosive Power

“…Second, the players performed the CMJ with free countermovement positions while squatting down and extending the knees in a continuous movement, and their hands were freely used while jumping. In volleyball players, the SJ and the CMJ assess volleyball-specific skills ( Berriel et al, 2020 ; Formenti et al, 2020 ). These tests appear more appropriate considering the metabolic pathways and biomechanics properties of spike jump, block jump, and other volleyball-related moves ( Wagner et al, 2009 ).…”

“…These tests appear more appropriate considering the metabolic pathways and biomechanics properties of spike jump, block jump, and other volleyball-related moves ( Wagner et al, 2009 ). These tests are used to evaluate players’ performance at different training times during a championship preseason ( Berriel et al, 2020 ). The CMJ test plays a role in discriminating players of different competitive levels ( Formenti et al, 2020 ).…”

Specific features of blood parameters in volleyball players and wrestlers in preparatory period of training cycle

“…Вченими було доведено, що рівень білків або ферментів скелетних м'язів у сироватці крові можуть бути маркерами функціонального стану м'язової тканини і сильно коливатися як при патологічних, так і фізіологічних станах [3,12,21,32]. Маркерами пошкодження м'язів можуть виступати креатинкіназа, креатинін, лактатдегідрогеназа, міоглобін, тропонін, аспартатамінотрансфераза [4,6,19]. Тому вивчення сучасних лабораторних маркерів структурно-функціонального порушення м'язової тканини у спортсменів, які відображають енергетичний обмін, ураження паравертебральних м'язів [8], або, навпаки, є показником працездатності організму та функціональної активності м'язів [14,18,24] має незаперечливе практичне значення для сучасної спортивної медицини.…”