We investigated the effects of seated versus prone leg curl training on hamstrings muscle hypertrophy and susceptibility to eccentric exercise-induced damage.Part 1: Twenty healthy adults conducted with one (Seated-Leg) other (Prone-Leg), at 70% one-repetition maximum (1RM), 10 repetitions per set, 5 sets session, 2 sessions week for 12 wk. Magnetic resonance imaging (MRI)-measured volume individual whole was assessed pre- posttraining. Part 2: Nineteen participants from part 1 another...

The size of the plantar intrinsic and extrinsic foot muscles has been shown to be associated with toe flexor strength (TFS). Previous studies adopted limited or a compartment containing several as an independent variable for TFS. Among muscles, therefore, it is unclear which muscle(s) primarily contributes TFS production. present study aimed clarify this subject.In 17 young adult men, series anatomical cross-sectional area individual was obtained along length lower leg length, respectively,...

The biarticular triceps brachii long head (TBLong) is lengthened more in the overhead than neutral arm position. We compared hypertrophy after elbow extension training performed vs. Using a cable machine, 21 adults conducted extensions (90-0°) with one (Overhead-Arm) and other (Neutral-Arm) position at 70% one-repetition maximum (1RM), 10 reps/set, 5 sets/session, 2 sessions/week for 12 weeks. Training load was gradually increased (+5% 1RM/session) when preceding session completed without...

Abstract Human plantar intrinsic foot muscles consist of 10 that originate and insert within the sole foot. It is known anatomical cross‐sectional area (ACSA) muscle thickness two muscles, flexor hallucis brevis (FHB) abductor (ABH), associate with morphological parameters foot, such as total truncated length navicular height. However, it unclear how size for each associates various profiles This study aimed to elucidate this subject. By using magnetic resonance imaging (MRI), serial images...

Abstract Purpose This study examined the relationships of knee extensor strength and quadriceps femoris size with sprint performance in sprinters. Methods Fifty-eight male sprinters 40 body size-matched non-sprinters participated this study. The isometric isokinetic strengths were measured using a dynamometer. measurements performed slow fast velocities at 60°/s 180°/s, respectively. muscle volume (MV) was magnetic resonance imaging. relative MV calculated by normalizing to mass. Results...

Shimozawa, Y, Kurihara, T, Kusagawa, Hori, M, Numasawa, S, Sugiyama, Tanaka, Suga, Terada, RS, Isaka, and M. Point prevalence of the biomechanical dimension dysfunctional breathing patterns among competitive athletes. J Strength Cond Res 37(2): 270-276, 2023-There is growing evidence associations between altered numerous musculoskeletal psychological conditions. The diaphragmatic unknown athletic populations. purpose this study was to examine populations with a clinical measure assess...

Toe muscular strength plays an important role in enhancing athletic performance because the forefoot is only part of body touching ground. In general, increases with age throughout adolescence, and sex-related difference becomes evident during childhood adolescence. However, toe known to be levelled off after late adolescence both sexes. For adolescent populations, therefore, association physical might differ and/or sex. This study aimed investigate differences relationships between vertical...

Abstract Background Older adults are known to have more pronated foot posture and decreased toe flexor strength (TFS), as well mobility in daily life compared young adults. Although is reported be an influential factor for walking biomechanics adults, there less information on this subject older Age‐related reduction TFS shown associated with impairments of functional performance, but it poorly understood whether influences the relationships between performances. Therefore, present study...

A shorter joint moment arm (MA) may help maintain the necessary muscle force when contractions are repeated. This beneficial effect contribute to reducing energy cost during running. In this study, we examined correlation between patellar tendon MA and running performance in endurance runners. The quadriceps femoris volume (MV) 42 male runners 14 body size-matched untrained participants were measured using a 1.5-T magnetic resonance system. was significantly than (p = 0.034, d 0.65)....

The plantar flexor torque plays an important role in achieving superior sprint performance sprinters. Because of the close relationship between joint and muscle size, a simple assumption can be made that greater muscles (i.e., triceps surae muscles) are related to better performance. However, previous studies have reported absence these relationships. Furthermore, examine relationships, only few calculated volume (MV) flexors. In this study, we hypothesized MVs may not morphological factors...

In classic ballet, choreography often involves tiptoe standing. Tiptoe standing requires a high and stable foot arch structure, which is achieved by contraction of the plantar intrinsic muscles (PIFMs). Long-term repetitive loading with specific movement can induce hypertrophic adaptation associated muscles. For dancers, however, limited information on size individual PIFMs available from previous studies. The purpose this study was to determine differences in sizes 10 between dancers non-dancers.

Purpose: Toe flexor strength (TFS) has been determined to evaluate the toe muscle function. However, it is unclear how and size relationships of muscles vary depending on toes intended for force production. We aimed clarify this by examining relationship between TFS size, hypothesized produced all (TFS-All), great (TFS-Great) lesser (TFS-Lesser) would be specifically associated with specialized in each corresponding flexion. Methods: The maximal anatomical cross-sectional area (ACSAmax) was...

<title>Abstract</title> During tiptoe standing, especially with the single-legged support, foot joints in ballet dancers are heavily loaded. Thus, activity of plantar intrinsic muscles (PIFMs), which stabilize joints, may be important reducing postural sway during standing. We compared PIFM and bipedal standing examined its relationship to dancers. In 11 female dancers, electromyography (EMG) amplitudes PIFMs center pressure (COP) data were recorded tasks. The EMG normalized those maximal...

Minimizing postural sway during tiptoe standing is essential for ballet dancers. Investigation of the activity plantar intrinsic foot muscles (PIFMs) may provide insight into in Herein, we compared PIFM between dancers and non-dancers examined its relationship with sway.

Abstract Purpose: This study examined the relationships of knee extensor strength and quadriceps femoris size with sprint performance in sprinters. Methods: Fifty-eight male sprinters 40 body size-matched non-sprinters participated this study. The isometric isokinetic strengths were measured using a dynamometer. measurements performed slow fast velocities at 60°/s 180°/s, respectively. muscle volume (MV) was magnetic resonance imaging. relative values MV normalized to mass. Results: absolute...

BackgroundPostural stability during tiptoe standing is essential for ballet dancers. Investigation of the activity plantar intrinsic foot muscles (PIFMs) may provide insight into postural control in Herein, we compared PIFM between dancers and non-dancers examined its relationship with sway.MethodsWe enrolled 14 female 13 non-dancers. Electromyography (EMG) amplitudes 64 channels PIFMs center pressure (COP) data were recorded bipedal tasks performed ankle flexion angles 20°, 40°, 60°...

Abstract Background Plantar intrinsic foot muscles (PIFMs) are composed of 10 and play an essential role in achieving functional diversity the foot. Previous studies have identified that morphological profiles PIFMs vary between individuals. The a muscle theoretically reflect its output potentials: physiological cross-sectional area (PCSA) is proportional to maximum force generation, fiber length (FL) shortening velocity. This implies PCSA FL may be useful variables for characterizing...

Plantar intrinsic foot muscles (PIFMs) are composed of 10 and play an essential role in achieving functional diversity the foot. Previous studies have identified that morphological profiles PIFMs vary between individuals. The a muscle theoretically reflect its output potentials: physiological cross-sectional area (PCSA) is proportional to maximum force generation, fiber length (FL) shortening velocity. This implies PCSA FL may be useful variables for characterizing individual PIFM. purpose...

Abstract Background Older adults are known to have more pronated foot posture and decreased toe flexor strength (TFS), as well mobility compared young adults. Although is reported be an influential factor for walking biomechanics in adults, there less information on this subject older Age-related reduction TFS shown associated with impairments of functional performance, but it poorly understood whether influences the relationships between performances. Therefore, present study aimed...

Abstract Background: Older adults are known to have more pronated foot posture and decreased toe flexor strength (TFS), as well mobility in daily life compared young adults. Although is reported be an influential factor for walking biomechanics adults, there less information on this subject older Age-related reduction TFS shown associated with impairments of functional performance, but it poorly understood whether influences the relationships between performances. Therefore, present study...

Abstract Toe flexor strength (TFS) has been shown to be associated with the size of toe muscles. However, it is unclear how relationship between muscle and TFS varies depending on toe(s) intended for force production. We hypothesized that produced by all toes (TFS-All), great (TFS-Great), lesser (TFS-Lesser) would specifically muscles specialized in each flexion. The maximal anatomical cross-sectional area (ACSA max ) was measured magnetic resonance imaging fifteen healthy young men. three...

<h3>Background</h3> Recurrent ankle sprains (RAS) are often preventable through sensorimotor training interventions. However, implementation of RAS prevention programs for athletes is limited because a lack resources, time, and understanding long-term negative consequences associated with RAS. Prospective, longitudinal documentation self-reported physical functions in over the duration an athletic season without participation needed to highlight importance specific injury managements...