Department of Exercise Science, Faculty of Kinesiology & Physical Education, University of Toronto, Toronto, Ontario, Canada.
Department of Experimental Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
J Strength Cond Res. 2019 Dec;33(12):3491-3500. doi: 10.1519/JSC.0000000000002618.
Rosenblat MA, Perrotta AS, and Vicenzino B. Polarized vs. threshold training intensity distribution on endurance sport performance: A systematic review and meta-analysis of randomized controlled trials. J Strength Cond Res 33(12): 3491-3500, 2019-The objective of this review was to systematically search the literature to identify and analyze data from randomized controlled trials that compare the effects of a polarized training model (POL) vs. a threshold training model (THR) on measurements of sport performance in endurance athletes. This systematic review and meta-analysis is registered with PROSPERO (CRD42016050942). The literature search was performed on November 6, 2016 and included SPORTDiscus (1800-present), CINAHL Complete (1981-present), and Medline with Full Text (1946-present). Studies were selected if they included: random allocation, endurance-trained athletes with greater than 2 years of training experience and VO2max/peak >50 ml·kg·min, a POL group, a THR group, assessed either internal (e.g., VO2max) or external (e.g., time trial) measurements of endurance sport performance. The databases SPORTDiscus, Medline and CINAHL yielded a combined 329 results. Four studies met the inclusion criteria for the qualitative analysis, and 3 for the meta-analysis. Two of the 4 studies included in the review scored a 4/10 on the PEDro Scale and 2 scored a 5/10. With respect to outcome measurements, 3 studies included time-trial performance, 3 included VO2max or VO2peak, 2 studies measured time-to-exhaustion, and one study included exercise economy. There was sufficient data to conduct a meta-analysis on time-trial performance. The pooled results demonstrate a moderate effect (ES = -0.66; 95% CI: -1.17 to -0.15) favoring the POL group over the THR group. These results suggest that POL may lead to a greater improvement in endurance sport performance than THR.
罗森布拉特 MA、佩罗塔 AS 和维琴佐尼 B. 耐力运动表现的极化与阈值训练强度分布：随机对照试验的系统评价和荟萃分析。J 力量与体能研究 33(12):3491-3500,2019-本综述的目的是系统地搜索文献，以确定和分析比较极化训练模式（POL）与阈值训练模式（THR）对耐力运动员运动表现测量影响的随机对照试验的数据。本系统评价和荟萃分析已在 PROSPERO（CRD42016050942）注册。文献检索于 2016 年 11 月 6 日进行，包括 SPORTDiscus（1800 年至今）、CINAHL Complete（1981 年至今）和 Medline with Full Text（1946 年至今）。如果研究符合以下标准，则将其纳入：随机分配、具有 2 年以上训练经验和 VO2max/峰值>50ml·kg·min 的耐力训练运动员、POL 组、THR 组，评估内部（例如，VO2max）或外部（例如，计时赛）耐力运动表现的测量。SPORTDiscus、Medline 和 CINAHL 三个数据库的综合结果为 329 个。四项研究符合定性分析的纳入标准，三项研究符合荟萃分析的纳入标准。综述中纳入的 4 项研究中有 2 项得分为 4/10（PEDro 量表），2 项得分为 5/10。关于结果测量，有 3 项研究包括计时赛表现，3 项研究包括 VO2max 或 VO2peak，2 项研究测量力竭时间，1 项研究包括运动经济性。有足够的数据进行计时赛表现的荟萃分析。汇总结果表明，POL 组的效果优于 THR 组，效果中等（ES=-0.66；95%CI：-1.17 至-0.15）。这些结果表明，与 THR 相比，POL 可能会导致耐力运动表现的更大改善。
