Can Hip Joint Position affect Quadriceps Muscle Responses during Knee Extension Exercise?

Abstract

<jats:title>Abstract</jats:title><jats:p>This study investigated the acute effects of seated and supine knee extension exercise on muscle swelling, torque, and work output. Twelve resistance-trained men performed two isokinetic concentric-only knee-extension training protocols at different hip positions in a counter-balanced order. They completed the knee extension exercise in the seated (hip angle at 85°) and supine (hip angle at 180°) positions. The torque and work output were assessed during each set. Moreover, muscle thickness of the middle and proximal vastus lateralis and rectus femoris were evaluated before and after each protocol and used as an indicator of muscle swelling. Middle rectus femoris and proximal vastus lateralis thickness increased significantly (p=0.01) with no difference between exercise variations. However, the middle vastus lateralis thickness increased (p=0.01) only after the seated knee extension exercise (~7%). Knee extensors’ peak torque and work output were approximately 8% higher (p=0.04) in the seated when compared to the supine hip position. There was a similar decrease in torque and work output throughout both protocols (p=0.98). In conclusion, seated knee extension exercises produced greater torque, work output, and muscle swelling in the vastus lateralis when compared to the supine knee extension exercise.</jats:p>

Muscle Swelling of the Triceps Surae in Response to Straight-Leg and Bent-Leg Calf Raise Exercises in Young Women

“…In this study, we observed that the magnitude of swelling of the triceps surae muscles differs depending on the specific calf raise exercise. Our findings are in line with previous investigations that observed differential muscle swelling and fluid shift in other muscles (e.g., quadriceps and pectoralis major) when performing different resistance exercises (1,19,27). The first major finding of this study was the greater gastrocnemius muscle swelling observed after STRA-leg than BENT-leg calf raise.…”

“…Interestingly, there appears to be a relationship between muscle swelling measures and muscle hypertrophy (12). Ultrasound imaging has been used to detect changes in muscle size after exercise (12,26,27). However, most studies investigating resistance exercise-induced muscle swelling have focused on the quadriceps (12,26,27).…”

“…Ultrasound imaging has been used to detect changes in muscle size after exercise (12,26,27). However, most studies investigating resistance exercise-induced muscle swelling have focused on the quadriceps (12,26,27). Therefore, findings characterizing swelling effects of different resistance exercises for other muscles such as triceps surae are limited or nonexistent.…”

Hip-knee-ankle physiotherapy for the improvement of the biomechanical environment of the lower limb in knee disorders: a systematic review

“…Furthermore, Kaya et al 28 discovered that neuromuscular control exercise following ACL-R surgery restored knee proprioceptive enhancement in participants with less risk factors for lower extremity alignment. 12 strength-training males were given two isometric concentric unilateral knee extensions to complete at various hip locations by Vieira et al 55 . Results indicated that knee extension motions created higher force and output more power in the sitting position compared to the supine position.…”