The research aimed to raise the level of junior speed swimmers for the age group (13-14 years) by identifying the effect of a proposed training program for lactic production (SP-2) and muscle strength, the percentage of lactic concentration in the blood, and muscle strength on the measurement of speed swimmers, and the researcher used the method approach Experimental on a sample consisting of (20) swimmers for the age group (13-14) years. The research tools: a Casio stopwatch model (3.w-stopwatch) that records to the nearest 1/100th of a second, a dynamometer to measure the strength of the muscles of the back and legs, a manometer to measure grip strength, a dry spirometer to measure vital capacity, Accu sport device for measuring lactic acid in the blood, Lactate Test Strips for measuring lactic acid in the blood, Oximetr for measuring the percentage of oxygen in the blood. Statistical treatments: arithmetic mean - standard deviation - median - skew coefficient - simple correlation coefficient - "t" test - percentage improvement %.The most important results: The increase in blood oxygen saturation is an indicator of the improvement of aerobic and anaerobic performance, the possibility of improving muscle strength in light of the increase in the concentration of lactic acid in the blood, the level of the swimmers can be predicted in terms of Some physical and physiological variables. The most important recommendations: Conducting such a study on the three levels of endurance training "Maglisco" for the development of aerobic capacity (En-1), (En-2), (En-3) on the same age group in order to identify the percentages of contribution and impact of these levels in the level and physical components, increasing the trainers’ interest in physiological measurements (lactic ratio in the blood, oxygen percentage in the blood, vital capacity, and others), the need to rely on measuring the concentration of lactic in the blood to assess the training status of swimmers, the need to use physiological indicators for swimmers in the design and preparation of programs appropriate training for their physiological capabilities