부산대학교 도서관

Context: A strength-endurance diagram predicts that a person should be able to perform 30 repetitions of an exercise if the resistance level is 60% of 1-repetition maximum (1RM). Objective: To compare the number of repetitions predicted by the diagram with recorded repetitions of a shoulder exercise. Design: Single-group comparison with a standard. Setting: University. Participants: 34 healthy adults (20 women, 14 men) with a mean age of 29 years (range 20-49). Main Outcome Measures: The number of repetitions that subjects could perform in good form of a shoulder exercise with resistance of 60% 1RM. Results: The mean number of repetitions was 21 (± 3, range 15-28), which was significantly different than the 30 repetitions that the diagram predicted. Conclusions: The strength-endurance diagram did not accurately predict the number of repetitions of a shoulder exercise that subjects could perform. [ABSTRACT FROM AUTHOR]