How does training affect performance?

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Across
  1. 1. point at which lactic acid accumulates rapidly in the blood
  2. 3. ability of a muscle or muscle group to exert a force against a resistance
  3. 5. in the presence of oxygen
  4. 7. training that uses the aerobic energy system as the main source of energy
  5. 10. training that incorporates high intensity work with limited recovery
  6. 11. growth
  7. 13. the lowest level at which we can train and still make some fitness gains
  8. 14. apply resistance without changing muscle length
  9. 16. the amount of air the lungs can hold
  10. 17. implies that gains in fitness occur when training load is increased as improvements occur
  11. 21. principle that implies that greatest gains occur when training resembles competition movement
  12. 23. measures the energy value of food
Down
  1. 1. by product of the incomplete breakdown of CHO in the absence of oxygen
  2. 2. number of heartbeats/minute while at rest
  3. 4. referred to as the "detraining effect"
  4. 6. in the absence of oxygen
  5. 8. refers to wasting or a decrease in size
  6. 9. process of breaking down glucose in the absence of oxygen to produce energy
  7. 12. range through which joints and body parts are able to move
  8. 15. amount of blood ejected by the left ventricle during a contraction
  9. 18. ability of working muscles to use the oxygen being delivered
  10. 19. process of restoring ATP to its former state
  11. 20. glucose stored in the body. Used for fuel when blood glucose levels decline
  12. 22. generally is the use of free weights to lengthen and then contract muscle fibres