Conte Daniele, Arruda Ademir Felipe Schultz, Clemente Filipe M, Castillo Daniel, Kamarauskas Paulius, Guerriero Aristide
Int J Sports Physiol Perform. 2022 Apr 1;17(4):634-639. doi: 10.1123/ijspp.2021-0097. Epub 2022 Feb 15.
To assess the relationship between external and internal load during official women's rugby seven matches.
Six backs (age = 24.2 [3.2] y; height = 161.5 [7.3] cm; body mass = 59.5 [5.0] kg; playing experience = 5.3 [1.5] y) and 8 forwards (age = 22.4 [2.7] y; height = 167.0 [4.8] cm; body mass = 70.6 [5.6] kg; playing experience = 5.0 [1.5] y) belonging to the women's rugby seven Brazilian national team were monitored across 3 international tournaments during the 2019-20 season, with 2 players excluded from the analysis since they did not participate in any investigated match. Total distance (TD), distance during high-intensity running 18.1 to 20.0 km·h-1 and >20 km·h-1 (sprinting), number of accelerations >1.8 m·s-2 (ACC), and of decelerations <1.8 m·s-2 were used as match load volume measures, while their relative values (TD per minute, high-intensity running per minute, sprinting per minute, ACC per minute, and decelerations per minute) were used as external load match intensity measures. Internal load intensity and volume were assessed using the session rating of perceived exertion (sRPE) and its value multiplied by match duration (sRPE-ML), respectively. Spearman correlations and linear mixed models were used to assess the relationships between internal and external load measures.
A very large relationship (ρ = .830, P < .001) was found between sRPE-ML and TD, with linear mixed models showing that TD statistically affected sRPE-ML (P < .001). Linear mixed models analysis showed that ACC per minute was also affecting the sRPE-ML (P = .017), while sprinting (P = .007) and ACC per minute (P = .005) were the only 2 measures statistically affecting sRPE. However, weak relationships (trivial to large) were found for these and all other measures.
These results highlight that TD is the main external load measure able to anticipate the internal load responses measured via sRPE-ML in elite women's rugby sevens.
评估女子七人制橄榄球正式比赛中外负荷与内负荷之间的关系。
对巴西女子七人制橄榄球国家队的6名后卫（年龄=24.2[3.2]岁；身高=161.5[7.3]厘米；体重=59.5[5.0]千克；比赛经验=5.3[1.5]年）和8名前锋（年龄=22.4[2.7]岁；身高=167.0[4.8]厘米；体重=70.6[5.6]千克；比赛经验=5.0[1.5]年）在2019 - 20赛季的3场国际比赛中进行监测，有2名球员因未参加任何被调查比赛而被排除在分析之外。总距离（TD）、高强度跑步（18.1至20.0千米·小时-1和>20千米·小时-1，即冲刺跑）距离、加速度>1.8米·秒-2（ACC）的次数和减速度<1.8米·秒-2的次数被用作比赛负荷量度指标，而它们的相对值（每分钟TD、每分钟高强度跑步、每分钟冲刺跑、每分钟ACC和每分钟减速度）被用作外负荷比赛强度指标。内负荷强度和量度分别使用主观用力程度会话评分（sRPE）及其值乘以比赛时长（sRPE - ML）来评估。使用斯皮尔曼相关性和线性混合模型来评估内负荷与外负荷指标之间的关系。
发现sRPE - ML与TD之间存在非常强的关系（ρ =.830，P <.001），线性混合模型表明TD对sRPE - ML有统计学影响（P <.001）。线性混合模型分析表明，每分钟ACC也对sRPE - ML有影响（P =.017），而冲刺跑（P =.007）和每分钟ACC（P =.005）是仅有的对sRPE有统计学影响的2个指标。然而，这些指标与所有其他指标之间的关系较弱（从微不足道到较大）。
这些结果突出表明，在精英女子七人制橄榄球比赛中，TD是能够预测通过sRPE - ML测量的内负荷反应的主要外负荷指标。
