The aims of the study are: 1. To examine skeletal muscle and blood metabolites during an official basketball game and to relate those to skeletal muscle performance during and after the game. 2. To investigate whether skeletal muscle and blood metabolites are related to game-induced fatigue. 3. To relate field activity during a basketball game with the responses of skeletal muscle and blood metabolites. 4. To investigate how blood lactate reflects muscle lactate concentration during a basketball game. 5. To determine whether temporary fatigue develops during a basketball game. game.
Age range
18 Years – 30 Years
Sex
MALE
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Measurement of countermovement jump height
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).
Bilateral strength peak force and rate of force development on mid-thigh pull
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).
Measurement of maximal sprinting speed over 5 meters
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).
Measurement of maximal sprinting speed over 20 meters
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).
Measurement of the capacity to perform repeated sprints
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).
Measurement of field activity variables during the basketball game
Timeframe: Continuous monitoring during each 40-minute game.
Measurement of heart rate during the basketball game ad recording the average and maximal heart rate of the game.
Timeframe: Continuous monitoring during each 40-minute game.
Measurement of skeletal muscle glycogen content
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).
Measurement of skeletal muscle fiber-type distribution and fiber-type- specific glycogen content.
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).
Measurement of skeletal muscle phosphocreatine levels
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).
Measurement of skeletal muscle lactate
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).
Measurement of effort and fatigue
Timeframe: Change from baseline to the: a. 20th minute (half-time) and 40th minute (end of the game) (N=10), b. 5th minute (mid-1st period) and 25th minute (mid-3rd period) (N=10) and c. 15th minute (mid-2nd period) and 35th minute (mid-4th period) (N=10).