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To compare the effects of muscular endurance and resisted strengthening protocols on abdominal strength and endurance in a sample of young subjects.Randomized Clinical Trial.University fitness laboratory.79 healthy subjects, (45 males and 34 females) aged 23.5 ± 5.8 years.Measurements were taken at baseline and 12 weeks. Abdominal strength and endurance were evaluated using an isokinetic dynamometer...