Int J Sports Physiol Perform. 2021 Jun 1;16(6):779-786. doi: 10.1123/ijspp.2020-0306. Epub 2021 Feb 4.
To quantify the demands of specific on- and off-court sessions, using internal and external training load metrics, in elite squash.
A total of 15 professional squash players (11 males and 4 females) wore a 100-Hz triaxial accelerometer/global positioning system unit and heart rate monitor during on-court "Group," "Feeding," "Ghosting," "Matchplay," and off-court "Conditioning" sessions across a 2-week in-season microcycle. Comparisons of absolute training load (total values) and relative intensity (per minute) were made between sessions for internal (session rating of perceived exertion, differential rating of perceived exertion, TRIMP) and external (Playerload, very high-intensity movements [>3.5 m·s-2]) metrics.
The Group sessions were the longest (79 [12] min), followed by Feeding (55 [15] min), Matchplay (46 [17] min), Conditioning (37 [9] min), and Ghosting (35 [6] min). Time >90% maximum heart rate was the lowest during Feeding (vs all others P < .05) but other sessions were not different (all P > .05). Relative Playerload during Conditioning (14.3 [3.3] arbitrary unit [a.u.] per min, all P < .05) was higher than Ghosting (7.5 [1.2] a.u./min) and Matchplay (6.9 [1.5] a.u./min), with no difference between these 2 sessions (P ≥ .999). Conditioning produced the highest Playerloads (519 [153] a.u., all P < .001), with the highest on-court Playerloads from Group (450 [94] a.u., all P < .001). The highest session rating of perceived exertion (all P < .001), Edward's TRIMP (all P < .001), and TEAM-TRIMP (all P < .019) occurred during the Group sessions.
Squash Matchplay does not systematically produce the highest training intensities and loads. Group sessions provide the highest training loads for many internal and external parameters and, therefore, play a central role within the training process. These findings facilitate planning or adjustment of intensity, volume, and frequency of sessions to achieve desirable physical outcomes.
使用内部和外部训练负荷指标,量化精英壁球中特定场内和场外训练的需求。
在 2 周的赛季微周期内,15 名职业壁球运动员(11 名男性和 4 名女性)在场上的“团体”、“喂球”、“假打”、“比赛”和场外的“体能训练”中佩戴 100Hz 三轴加速度计/全球定位系统单元和心率监测器。对内部(主观感觉用力等级量表、差异主观感觉用力等级量表、TRIMP)和外部(Playerload、高强度动作[>3.5 m·s-2])指标的各项训练负荷(总数值)和相对强度(每分钟)进行比较。
团体训练时间最长(79 [12] 分钟),其次是喂球(55 [15] 分钟)、比赛(46 [17] 分钟)、体能训练(37 [9] 分钟)和假打(35 [6] 分钟)。最大心率的 90%以上时间最低的是喂球(与其他所有时间相比 P <.05),但其他时间没有差异(所有 P >.05)。与假打(7.5 [1.2] 单位/分钟)和比赛(6.9 [1.5] 单位/分钟)相比,体能训练的相对 Playerload 更高(14.3 [3.3] 任意单位/分钟,所有 P <.05),但这两个时间没有差异(P ≥.999)。体能训练产生的 Playerloads 最高(519 [153] 个单位,所有 P <.001),其中最高的场上 Playerloads 来自团体训练(450 [94] 个单位,所有 P <.001)。最高的主观感觉用力等级量表(所有 P <.001)、爱德华氏 TRIMP(所有 P <.001)和 TEAM-TRIMP(所有 P <.019)都发生在团体训练中。
壁球比赛并没有系统地产生最高的训练强度和负荷。团体训练为许多内部和外部参数提供了最高的训练负荷,因此在训练过程中起着核心作用。这些发现有助于规划或调整强度、量和频率,以达到理想的身体效果。