Abelleira-Lamela Tomás, Marcos-Pardo Pablo Jorge, Abraldes J Arturo, González-Gálvez Noelia, Espeso-García Alejandro, Esparza-Ros Francisco, Vaquero-Cristóbal Raquel
Facultad del Deporte, UCAM Universidad Católica de Murcia, 30107 Murcia, Spain.
SPORT Research Group (CTS-1024), CIBIS (Centro de Investigación para el Bienestar y la Inclusión Social), University of Almeria, 04120 Almeria, Spain.
Sensors (Basel). 2024 Dec 3;24(23):7740. doi: 10.3390/s24237740.
Outdoor fitness equipment (OFE) are strength training installations comparable to those found in indoor gyms but are located outdoors with greater accessibility. However, the scientific evidence supporting their effectiveness remains limited. The objective of this study was to analyze and compare the electromyographic (EMG) activity of upper limb muscle groups during the use of a traditional seated chest press (SCP) machine, a classic OFE SCP (OFE-SCP), and a new OFE-SCP featuring a load selector system (BIOFIT-SCP). The sample was composed of 34 active young men. EMG activity of five muscle groups was analyzed: the anterior deltoid (AD), the clavicular (CP) and sternal (SP) heads of the pectoralis major, and the lateral (LHTB) and long heads of the triceps brachii (LongHTB), under different intensities. The OFE-SCP showed significantly lower EMG activity compared with the SCP and BIOFIT-SCP in all muscles and phases ( < 0.001). Significantly lower EMG activity for the SP in all three phases was found on the BIOFIT-SCP compared with the SCP ( < 0.001), but it was significantly higher for the LHTB and AD in the BIOFIT-SCP compared with the SCP during the full and concentric phases ( < 0.05 to < 0.001). In conclusion, training with the OFE-SCP generates less EMG activity than traditional machine training, while, in general, BIOFIT-SCP proved effective for strength training comparable to the SCP.
户外健身器材（OFE）是一种力量训练设施，与室内健身房中的器材类似，但位于户外，使用起来更加便捷。然而，支持其有效性的科学证据仍然有限。本研究的目的是分析和比较在使用传统坐姿推胸机（SCP）、经典户外健身器材坐姿推胸机（OFE-SCP）以及一种配备负荷选择系统的新型户外健身器材坐姿推胸机（BIOFIT-SCP）时上肢肌肉群的肌电图（EMG）活动。样本由34名活跃的年轻男性组成。分析了五个肌肉群在不同强度下的EMG活动：三角肌前束（AD）、胸大肌锁骨部（CP）和胸骨部（SP），以及肱三头肌外侧头（LHTB）和长头（LongHTB）。在所有肌肉和阶段中，与SCP和BIOFIT-SCP相比，OFE-SCP的EMG活动显著更低（<0.001）。与SCP相比，在BIOFIT-SCP上，SP在所有三个阶段的EMG活动均显著更低（<0.001），但在全程和向心阶段，与SCP相比，BIOFIT-SCP上LHTB和AD的EMG活动显著更高（<0.05至<0.001）。总之，使用OFE-SCP进行训练所产生的EMG活动比传统器械训练少，而总体而言，BIOFIT-SCP被证明在力量训练方面与SCP同样有效。
