Journal of Sports Science and Physical Education 5(2): 15-23, 2016 - This study was
conducted to determine the relationship between lower body muscle architectures and lunges
performance. Thirty recreationally active, untrained men (mean age = 22.21 ± 1.59 yrs old)
were recruited and involved in two testing sessions; i) anthropometrics and muscle
architecture, and ii) multiple-repetition maximum (RM) lunge test. Muscle thickness,
pennation angle and fascicle length of vastus lateralis (VL), vastus medialis (VM), rectus
femoris (RF) and biceps femoris (BF) were analysed using ultrasonography. Multiple-RM
lunge testing was used as an estimation of 1RM lunges performance. Correlation analysis was
used to determine the relationship between lower body muscle architectures and lunges
performance calculated absolutely and relatively (1RM/body mass). The overall results
showed that muscle thickness and pennation angle of all muscles were significantly positive
correlated with lunges performance. However, fascicle length was shown to be negatively
correlated with lunges performance. Findings of this study suggested the important for having
thicker, more pennated and shorter fascicle of lower body muscle in enhancing lunges
performances that is one of the most specific movements in sport.
This study was conducted to determine and compare the muscle activity during step forward lunge (SFL) and jump forward lunge (JFL) in badminton. Fifteen university badminton players (mean age = 22.07 ± 1.39 years old) were recruited and were assigned to perform SFL and JFL while holding a badminton racquet using their preferred hand. Muscle activation of vastus lateralis (VL), vastus medialis (VM), rectus femoris (RF), biceps femoris (BF), gluteus maximus (GM), medial gastrocnemius (MG), and lateral gastrocnemius (LG) were analysed and compared between SFL and JFL and also between dominant and non-dominant lower limb in each lunge protocol. Results showed for both the dominant and non-dominant lower limb, all the muscle activation was greater during JFL compared to SFL except for the MG muscle. All the muscle activation was also found to be greater in the dominant compared to non-dominant lower limb for both lunge protocols. Overall, findings demonstrated the existence of differences in muscle activation across difference protocols of movement and different site of limbs. This should be taken into consideration for developing training program in order to enhance performance and reduce the risk of injuries.