Centro de Instrução e Adaptação da Aeronáutica, Força Aérea Brasileira, Lagoa Santa, Brazil.
Department of Individual Sports, Universidade Federal de Santa Maria, Santa Maria, Brazil.
Percept Mot Skills. 2023 Dec;130(6):2343-2361. doi: 10.1177/00315125231199813. Epub 2023 Sep 5.
In this study, we aimed to investigate the impact of acute fatigue on pistol shooting performance among Air Force marksmen. We compared the accuracy, precision, speed-accuracy trade-off, shooting cycle time, and hits on a silhouette target among 12 Brazilian Air Force servicemen ( age = 21.5, - 1.6 years) under both fatigue and non-fatigue conditions in a crossover design. In the fatigued condition, the participants performed a fatigue protocol composed of side runs, vertical jumps, push-ups, running, and burpees exercises before shooting. Participants performed the countermovement jump and the plyometric push-ups tests on a contact mat before and immediately after the fatigue protocol to compare the heights achieved pre- and post-fatigue. Paired tests showed a significant performance reduction of 34.36% and 40.02% for the countermovement jump and plyometric push-ups, respectively, indicating that participants were fatigued in their lower and upper limbs. In the non-fatigued condition, no exercise was performed before shooting. Results indicated no significant differences between conditions on shooting precision ( = .125; ES: .54), speed-accuracy trade-off ( = .261; ES = .33), hits within the silhouette ( = .167; ES = .41), or shooting cycle times ( = .868; ES = .05); but accuracy was greater ( = .025; ES: .54) when fatigued. We concluded that overall shooting performance was not impaired by physical fatigue, and shooting accuracy appeared to be improved. Perhaps physical fatigue was not enough to impair shooting accuracy in this young adult group, as accuracy decline is expected instead when shooters are in an exhausted state. Further research is needed to confirm these findings and test this presumption.
在这项研究中，我们旨在探讨急性疲劳对空军射手手枪射击表现的影响。我们比较了 12 名巴西空军军人（年龄 = 21.5 ± 1.6 岁）在交叉设计中疲劳和非疲劳条件下的准确性、精度、速度-准确性权衡、射击循环时间和对人体轮廓靶的命中情况。在疲劳条件下，参与者在射击前进行了侧跑、垂直跳跃、俯卧撑、跑步和波比跳等疲劳方案。参与者在疲劳方案前后在接触垫上进行了反跳和弹震式俯卧撑测试，以比较疲劳前后的高度。配对测试显示，反跳和弹震式俯卧撑的成绩分别下降了 34.36%和 40.02%，表明参与者的上下肢都疲劳了。在非疲劳条件下，射击前不进行任何运动。结果表明，两种条件下的射击精度（ =.125；ES：.54）、速度-准确性权衡（ =.261；ES =.33）、人体轮廓内的命中（ =.167；ES =.41）或射击循环时间（ =.868；ES =.05）均无显著差异；但疲劳时准确性更高（ =.025；ES：.54）。我们得出结论，整体射击表现不受身体疲劳的影响，且射击准确性似乎有所提高。也许在这个年轻的成年人群体中，身体疲劳还不足以损害射击准确性，因为当射手处于精疲力竭状态时，准确性通常会下降。需要进一步的研究来证实这些发现并验证这一假设。
