Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal.
Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal.
Sensors (Basel). 2024 Aug 31;24(17):5686. doi: 10.3390/s24175686.
We aimed to conduct a biophysical comparison of angular (Biorower) and linear (Concept2) rowing ergometers across a wide spectrum of exercise intensities. Sixteen (eleven male) skilled rowers, aged 29.8 ± 8.6 and 23.6 ± 1.5 years, with international competitive experience, performed 7 × 3 min bouts with 30 W increments and 60 s intervals, plus 1 min of all-out rowing on both machines with 48 h in between. The ventilatory and kinematical variables were measured breath-by-breath using a telemetric portable gas analyzer and determined using a full-body markerless system, respectively. Similar values of oxygen uptake were observed between ergometers across all intensity domains (e.g., 60.36 ± 8.40 vs. 58.14 ± 7.55 mL/min/kg for the Biorower and Concept2 at severe intensity). The rowing rate was higher on the Biorower vs. Concept2 at heavy and severe intensities (27.88 ± 3.22 vs. 25.69 ± 1.99 and 30.63 ± 3.18 vs. 28.94 ± 2.29). Other differences in kinematics were observed across all intensity domains, particularly in the thorax angle at the finish (e.g., 19.44 ± 4.49 vs. 27.51 ± 7.59° for the Biorower compared to Concep2 at heavy intensity), likely due to closer alignment of the Biorower with an on-water rowing technique. The overall perceived effort was lower on the Biorower when compared to the Concept2 (14.38 ± 1.76 vs. 15.88 ± 1.88). Rowers presented similar cardiorespiratory function on both rowing ergometers, while important biomechanical differences were observed, possibly due to the Biorower's closer alignment with an on-water rowing technique.
我们旨在对角度（Biorower）和线性（Concept2）划船测功仪进行生物物理比较，涵盖广泛的运动强度范围。16 名（11 名男性）熟练划船运动员，年龄分别为 29.8 ± 8.6 岁和 23.6 ± 1.5 岁，具有国际竞技经验，在两种机器上分别进行了 7×3 分钟的 30 W 递增和 60 s 间隔的划船，以及 48 小时后进行 1 分钟的全力划船。使用遥测便携式气体分析仪逐口气测量呼吸变量，并使用全身无标记系统分别确定运动学变量。在所有强度范围内，两种测功仪的耗氧量值相似（例如，在剧烈强度下，Biorower 和 Concept2 的耗氧量分别为 60.36 ± 8.40 和 58.14 ± 7.55 mL/min/kg）。在重强度和剧烈强度下，Biorower 的划桨率高于 Concept2（27.88 ± 3.22 比 25.69 ± 1.99 和 30.63 ± 3.18 比 28.94 ± 2.29）。在所有强度范围内观察到运动学的其他差异，特别是在划桨结束时的胸角（例如，在重强度下，Biorower 与 Concept2 的胸角分别为 19.44 ± 4.49 和 27.51 ± 7.59°），这可能是由于 Biorower 更接近水上划船技术的对齐方式。与 Concept2 相比，Biorower 的整体感觉努力较低（14.38 ± 1.76 比 15.88 ± 1.88）。划船运动员在两种划船测功仪上均表现出相似的心肺功能，而观察到重要的生物力学差异，这可能是由于 Biorower 更接近水上划船技术的对齐方式。
