The aim of this study is to examine the effects of rope-jump training program in physical education lessons on strength, speed and VO[subscript 2] max in 10-12 year old boys. 240 male students; rope-jump group (n = 120) and control group (n = 120) participated in the study. Rope-Jump group continued 10 weeks of regular physical education and sport lessons and at the same time rope jump training program exercise 3 days a week, while the control group continued physical education and sports lessons only. Body weight, body fat percentage, leg strength, 20m speed test and VO[subscript 2] max test measurements were taken before and after the 10 week period in both groups. The obtained data were evaluated in the SPSS 16 program. In the statistical analysis, t test was used in dependent and independent groups. As a result of pre-test and post-test, significant differences were found in all parameters except speed of control group (p<0.05). When the measurement differences between pre-test and post-test were compared according to the groups, it was determined that weight, body fat ratio, 20m sprint, VO[subscript 2] max and leg strength measurements were significantly different in favor of rope jump group (p<0.05). In 10-12 year old boys, rope-jump training program was the result of having a positive effect on strength, VO[subscript 2] max and especially speed. As a result, the inclusion of rope-jump programs in physical education and sports lesson curriculum, and in sports branch training programs may contribute to the development of children's motor skills and accelerate the development of the children.