Department of Kinesiology, California State University San Marcos, San Marcos, California, USA.
Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina, USA.
Ergonomics. 2024 Nov;67(11):1633-1643. doi: 10.1080/00140139.2024.2344688. Epub 2024 Apr 22.
Occupations including first responders and military require manual tasks; therefore changes in hand strength and dexterity could affect performance. We hypothesised that pinch strength, grip strength, and dexterity will change after unloaded and loaded exercise. Twenty-four male (25 ± 4.0 yrs; 86.3 ± 9.3 kg) and 10 female (25 ± 6.0 yrs; 62.1 ± 5.9 kg) participants completed 3 conditions for 5 minutes: (1) no exercise (2) run with no load at 3.0 m/s and (3) run wearing a 9.1 kg belt. Heart rate was different among conditions ( ≤ 0.05). Pinch strength was significantly different for the non-dominant hand after exercise ( = 0.005) for male participants, but not for the dominant hand. Grip strength was significantly different for the non-dominant hand between loaded and unloaded run ( = 0.035) for male participants. Pinch and grip strength did not change after exercise for female participants. Dexterity times were not different after exercise, but female participants were significantly faster ( ≤ 0.039) than male participants.
职业包括急救人员和军人，需要进行手动任务；因此，手部力量和灵活性的变化可能会影响表现。我们假设未负重和负重运动后，捏力、握力和灵巧度会发生变化。24 名男性（25±4.0 岁；86.3±9.3kg）和 10 名女性（25±6.0 岁；62.1±5.9kg）参与者完成了 3 种 5 分钟的条件：（1）不运动；（2）以 3.0m/s 的速度无负荷跑步；（3）穿 9.1kg 腰带跑步。心率在条件之间不同（ ≤ 0.05）。对于男性参与者，非优势手的捏力在运动后明显不同（ = 0.005），但优势手则不同。非优势手的握力在男性参与者的负重和非负重跑步之间存在显著差异（ = 0.035）。女性参与者的捏力和握力在运动后没有变化。运动后灵巧度时间没有差异，但女性参与者明显比男性参与者快（ ≤ 0.039）。
