OCR A Level PE - Year 1 | 265 Questions and Answers with complete solution

Abduction - Movement of the limbs away from the midline of the body. Acceleration - The rate of change in velocity. Acceleration (m/s//s) = (final velocity - initial velocity)/time. Actin-Myosin Filaments - Proteins which form the contractile units of skeletal muscle. Action Potential - Positive electrical charge inside the nerve and muscle cells which conducts the nerve impulses down the neuron and into the muscle fibre. Active Recovery - Low-intensity activity post exercise to maintain elevated heart and breathing rates. Adaptation - A physiological change in response to training. Adduction - Movement of the limbs towards the midline of the body. Aerobic Capacity - The ability of the body to inspire, transport and utilise oxygen to perform sustained periods of aerobic activity. Aerobic Work - Low intensity, long-duration exercise in the presence of oxygen. Aggression - Intent to harm outside the laws of the sports event. Agonist - A muscle responsible for creating movement at a joint. Also known as the prime mover. Air Resistance - The force that opposes the motion through the air.