title: Lower extremity muscle activity during different types and speeds of underwater movement.
abstract: To compare the activity of lower extremity muscles during land walking (LW), water walking (WW), and deep-water running (DWR), 9 healthy young subjects were tested at self-selected low, moderate, and high intensities for 8 sec with two repetitions. Surface EMG electrodes were placed on the tibialis anterior (TA), soleus (SOL), medial gastrocnemius (GAS), rectus femoris (RF), and biceps femoris (BF). During DWR, the SOL and GAS activities were lower than LW and WW. The BF activities were higher during DWR than LW and WW. It was considered that the lower activity of SOL and GAS depended on water depth, and higher activity of BF occurred by greater flexion of the knee joint or extension of the hip joint during exercise.
authors: Institute of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan. s0530485@ipe.tsukuba.ac.jp
authors: Koichi
authors: K
authors: Kaneda
authors: Hitoshi
authors: H
authors: Wakabayashi
authors: Daisuke
authors: D
authors: Sato
authors: Takeo
authors: T
authors: Nomura
mesh_terms: D000328:Adult; D004576:Electromyography; D006801:Humans; D007101:Immersion; D007866:Leg / Q000502:physiology*; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology; D005082:Physical Exertion / Q000502:physiology*; D014743:Videotape Recording; D016138:Walking / Q000502:physiology*