Gauging proximity to failure in the bench press: generalized velocity-based vs. %1RM-repetitions-to-failure approaches

被引:0
作者
Qin, Xuelin [1 ]
Liu, Beibei [2 ]
Garcia-Ramos, Amador [3 ,4 ]
机构
[1] Nanjing Sport Inst, Res Inst, Dept Sport Sci, Nanjing, Peoples R China
[2] Nanjing Univ, Jinling Hosp, Affiliated Hosp, Med Sch,Dept Rehabil, Nanjing 210002, Jiangsu, Peoples R China
[3] Univ Granada, Fac Sport Sci, Dept Phys Educ & Sport, Granada, Spain
[4] Univ Catolica Santisima Concepcion, Fac Educ, Dept Sports Sci & Phys Conditioning, Concepcion, Chile
关键词
Level of effort; Monitoring; Resistance training; Velocity-based training; LIFTING VELOCITY; STRENGTH GAINS; MAXIMUM NUMBER; REPETITIONS; RECOVERY; EXERCISE; RESERVE;
D O I
10.1186/s13102-025-01098-2
中图分类号
R49 [康复医学];
学科分类号
100215 ;
摘要
BackgroundThis study compared the accuracy of three generalized approaches for estimating proximity to failure during the Smith machine bench press: (i) the relationship between relative load (%1RM) and maximum repetitions performed to failure (%1RM-RTF), (ii) the relationship between maximum repetitions to failure and fastest set velocity (RTF-velocity), and (iii) the relationship between repetitions left in reserve (RIR) and lifting velocity (RIR-velocity).MethodsNineteen physically active men (22.9 +/- 2.7 years old) with at least two years of resistance training experience participated. Their 1-repetition maximum (1RM = 86.8 +/- 16.7 kg) was determined during the first session. In the second session, participants performed single sets to failure at 60% and 80% 1RM, with proximity to failure (2RIR and 4RIR) estimated using each approach.ResultsThe RIR-velocity relationship was the only approach that did not significantly deviate from the intended RIR (errors = -0.4 to 0.6 repetitions). In contrast, both the %1RM-RTF and RTF-velocity relationships overestimated the intended RIR at 60%1RM for both 2RIR (2.9 and 5.8 repetitions, respectively) and 4RIR (2.8 and 5.7 repetitions, respectively), while no significant differences were observed at 80%1RM (errors = -0.6 to 0.9 repetitions). The RIR-velocity relationship generally demonstrated the lowest absolute errors compared to the actual RIR (1.3 +/- 0.7 repetitions), with greater differences compared to the other two approaches at lighter loads and closer proximities to failure.ConclusionsIn the absence of individual relationships, the general RIR-velocity relationship should be used by coaches to control the proximity to failure of their athletes during the bench press exercise.
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页数:8
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