Background Glucose and lipid tolerance reportedly exhibit diurnal variations, being lower in the evening than morning. Therefore, effects of exercise on glucose blood levels at different times day may differ. This study aimed to investigate short-term endurance intervention morning versus late afternoon 24-h variability levels. Methods Twelve healthy young men participated a randomized crossover trial. The participants were assigned (09:00–11:00) or (16:00–18:00) for week, consisting...

Introduction The fencing lunge (lunge), characterized by minimal body rotation, offers a movement well-suited for 2D video analysis. However, to the best of our knowledge, validity analysis has not been verified. This study aimed validate comparing lower limb joints (hip, knee, and ankle joints) angles during using both 3D motion methods. Methods Twenty-two male fencers performed trials that were simultaneously recorded eight capture cameras (Qualisys Miqus M1) two digital (Sony AX-450...

Abstract A noninvasive, immediate, and convenient method for assessing muscle tissue status during exercise-induced damage (EIMD) has not been established. This study was designed to assess determine parameters suitable measuring EIMD after eccentric exercise, using multi-frequency bioimpedance analysis (BIA). Thirty-five young male participants performed dumbbell exercises with their left arm, BIA were measured at various time points up 168 h post exercise a device. At all-time points,...

Assessing muscle mechanical properties such as hardness and stiffness has important clinical implications. The use of ultrasound elastography to assess individual or been increasing in recent years. Several different methods are currently use, including strain shear wave elastography, which capable capturing the distribution within muscles. In present review, we outline some current basic applications illustrate how technologies may further advance understanding well functions.

ABSTRACT Introduction In this study we examined changes in fascicle length and pennation of vastus intermedius (VI) lateralis (VL) from rest to isometric contraction. Methods Fourteen healthy men performed submaximal (30% 50% maximal voluntary contraction; MVC) knee extensions at 60° 110° flexion (0° = full extension). Panoramic images VL VI were obtained during contractions measure using extended field‐of‐view ultrasonography, after confirmation that the technique could be used reliably...

Yoshimura, A, Inami, T, Schleip, R, Mineta, S, Shudo, K, and Hirose, N. Effects of self-myofascial release using a foam roller on range motion morphological changes in muscle: crossover study. J Strength Cond Res 35(9): 2444-2450, 2021-Self-myofascial (FR) is effective improving (ROM) at least some conditions. However, its mechanism still unclear. Therefore, this study investigated potential acute muscle after the FR intervention aimed to clarify increases ROM by intervention. We...

Despite the known beneficial effects of creatine in treating exercise-induced muscle damage (EIMD), its effectiveness remains unclear. This study investigates recovery effect monohydrate (CrM) on EIMD. Twenty healthy men (21-36 years) were subjected to stratified, randomized, double-blind assignments. The (CRE) and placebo (PLA) groups ingested crystalline cellulose, respectively, for 28 days. They subsequently performed dumbbell exercises while emphasizing eccentric contraction elbow...

This study aimed to investigate the acute change of static stretching (SS) on autonomic nerve activity and clarify effect SS systemic circulation. Twenty healthy young, male volunteers performed a 1-min motion right triceps surae muscle, repeated five times. The balance was obtained using second derivatives photoplethysmogram readings before (pre), during, after (post) SS. Heart rate blood pressure (BP) were also measured. significantly changed parasympathetic dominance by as compared with...

We recently reported that wearing unstable rocker shoes (Masai Barefoot Technology: MBT ) may enhance recovery from marathon race‐induced fatigue. However, this earlier study only utilized a questionnaire. In study, we evaluated utilizing objective physiological measures of marathon‐induced muscle damages. Twenty‐five university student novice runners were divided into two groups. After running full marathon, one group wore ( group), and the control CON ordinary daily for 1 week following...

Abstract Prolonged running results in lowering of the foot arch and a low is associated with subsequent chronic injuries. Foot posture alteration recovery following marathon run remain unknown. Therefore, present study aimed to evaluate full run. The three‐dimensional data 11 collegiate runners were obtained using an optical scanner system before, immediately, 1 day, 3 days, 8 days after marathon. navicular height ratio significantly decreased from before (navicular height: 44.2 ± 5.0 mm;...

Previous studies suggest that marathon running induces lower extremity muscle damage. This study aimed to examine inter- and intramuscular differences in hamstring damage after a using transverse relaxation time (T2)-weighted magnetic resonance images (MRI). 20 healthy collegiate runners (15 males) were recruited for this study. T2-MRI was performed before (PRE) at 1 (D1), 3 (D3), 8 days (D8) marathon, the T2 values of each distal, middle, proximal sites calculated. Results indicated no...

Abstract Changes in biceps brachii muscle hardness assessed by a push-in meter (PM) and strain elastography (SE) were compared between eccentric (ECC) concentric contractions (CON) of the elbow flexors to test hypothesis that would increase greater after ECC. Ten men performed 5 sets 10 ECC with their non-dominant arms CON dominant using dumbbell corresponding 50% maximum voluntary isometric contraction (MVIC) force at 90º flexion. Before 1–4 days exercise, MVIC force, joint angles,...

This study aimed to investigate the relationship between muscle shear modulus of biceps brachii, urinary titin N-terminal fragment (UTF), and other damage markers after eccentric exercise. Seventeen healthy males performed five sets ten exercises with dumbbells weighing 50% maximum voluntary contraction (MVC) at elbow joint. Muscle range interest set only brachii measured by ultrasound wave elastography, UTF, MVC, motion (ROM), soreness (SOR) were recorded before, immediately after, 1, 24,...

This study aimed to evaluate the effects of different target distances on various leg joints in fencing lunge (lunge). Fifteen fencers performed lunges from three (normal, short, and long). Joint angle data sagittal plane hip, knee, ankle front rear legs were measured using a 3D motion analysis system (Miqus M3). variables compared between each distance one-way repeated-measures variance Friedman tests (p < 0.05). The results showed significant differences extensions, ranges motion,...

Inami, T, Nakagawa, K, Yonezu, Fukano, M, Higashihara, A, Iizuka, S, Abe, and Narita, T. Tracking of time-dependent changes in muscle hardness after a full marathon. J Strength Cond Res 33(12): 3431-3437, 2019-We sought to identify individual marathon track using ultrasound strain elastography (SE). Twenty-one collegiate runners were recruited. Muscle (i.e., ratio, SR) was measured SE for the rectus femoris (RF), vastus lateralis (VL), biceps (BF) long head, tibialis anterior (TA),...

This study aimed to investigate the acute effect of static stretching (SS) on peripheral vascular tonus and clarify SS systemic circulation. Twenty healthy young male volunteers performed a 1-min motion right triceps surae muscle, repeated five times. The (|d/a| ratio) was obtained using second derivatives photoplethysmogram readings before, during, after SS. Heart rate blood pressure (BP) were also measured. |d/a| ratio BP transiently, but significantly, elevated during returned baseline...

Center of pressure (COP) is a sudden displacement at the time lateral ankle sprain (LAS). It has been suggested that distribution plantar and quantity COP are important for assessing risk LAS. Therefore, we evaluated during single-leg balance test with eyes closed (SLB-C) to identify factors characteristics in people repeated cases LAS.We recruited 22 collegiate athletes divided them into an instability group (IG; n=11) control (CG; n=11). We measured lower extremity muscle activity SLB-C...