J Sport Rehabil. 2022 May 1;31(4):420-427. doi: 10.1123/jsr.2021-0245. Epub 2022 Feb 2.
Although training with an aquabag (AB) has gained popularity, there is a lack of evidence of its effect. This study wanted to evaluate the effect of AB implementation on muscle activity of core and lower limb muscles during 3 functional exercises.
Cross-sectional observational study.
Twenty healthy subjects performed a squat, lunge, and step-up, while using a stick and an AB. Surface electromyography signals were recorded from the trunk, pelvis, and thigh muscles in the dominant leg. Linear-mixed models were used to analyze the normalized surface electromyography signals.
Results demonstrated a significant increase in muscle activity of the back muscles during all 3 exercises (P < .001 to P = .003), abdominals during squat (P = .034) and step-up (P = .046), hamstrings during lunge (P = .008) and step-up (P = .008), and gluteal muscles during lunge (P < .001 and P = .010, respectively).
These results indicate that an AB promotes functional strength training by demanding compensatory/additional activity of both stabilizing muscles (specifically in the core and pelvis regions) and prime movers of the lower limb. The authors recommend the use of an AB to enhance training and rehabilitation effects.
虽然使用水袋进行训练已经越来越流行，但目前缺乏其效果的相关证据。本研究旨在评估在 3 项功能性运动中使用水袋对核心和下肢肌肉的肌肉活动的影响。
横断面观察性研究。
20 名健康受试者使用棒和水袋进行深蹲、弓步和上台阶练习。记录主导腿的躯干、骨盆和大腿肌肉的表面肌电信号。采用线性混合模型分析表面肌电信号的归一化值。
结果表明，在所有 3 项运动中，背部肌肉的肌肉活动均显著增加（P <.001 至 P =.003），在深蹲（P =.034）和上台阶（P =.046）时腹部肌肉活动增加，在弓步（P =.008）和上台阶（P =.008）时腿筋肌肉活动增加，在弓步（P <.001 和 P =.010）和上台阶（P =.008 和 P =.010）时臀肌肌肉活动增加。
这些结果表明，水袋通过要求稳定肌肉（特别是核心和骨盆区域）和下肢原动肌进行代偿/额外活动，促进功能性力量训练。作者建议使用水袋来增强训练和康复效果。
