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Journal of Physical Fitness and Sports Medicine
ISSN 2186-8131 · Japanese Society of Physical Fitness and Sports Medicine · 602 artikel di indeks
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Artikel Jurnal
Exercise time positively correlates with physical fitness, regardless of overweight, obesity and underweight among primary and secondary students: a Japanese nationwide cross-sectional study
More research is needed to understand how exercise time and physical fitness relate to body size. In particular, there are no studies that have examined the relationship between physical activity and physical fitness, taking into account both overweight/obesity and thinness, using national samples…
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Artikel Jurnal
Relationship between waist circumference and trunk fat percentage in people with physical disabilities
While mortality due to spinal cord injuries (SCI) and urinary tract infections has markedly decreased, the incidence of malignant tumors and lifestyle-related diseases is increasing among people with physical disabilities. However, regular assessment of body weight and composition remains…
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Artikel Jurnal
Examination of locomotor system of elementary school students using diagnostic ultrasound system and lower limb flexibility assessment: toward early detection of Osgood-Schlatter disease during growth period
This study aimed to evaluate a musculoskeletal screening method for elementary school students using ultrasound and lower limb flexibility assessments, with the goal of early detection of Osgood-Schlatter disease during the growth period. A total of 143 boys in the fourth to sixth grades of…
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Artikel Jurnal
Eccentric exercise: neuromuscular characteristics, muscle damage, training effects, and applications
Eccentric contractions involve active muscle lengthening under load, and exercise modalities predominantly comprising eccentric contractions (eccentric exercise) get increasing attention in exercise physiology, rehabilitation, and clinical practice. Compared to concentric contractions, skeletal…
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Artikel Jurnal
Impact characteristics of two American football helmet models
Few studies have compared the impact characteristics of modern American football helmet types. The purpose of this study was to measure and compare the collision biomechanics of the common Vicis Zero1 (2.27 kg) and Riddell Speedflex (2.09 kg) helmets. Linear drop tests were conducted from 1.52…
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Artikel Jurnal
Longitudinal changes in physical activity of early-stage breast cancer survivors in Japan during and after COVID-19 lockdown
This study investigated the changes in the physical activity of Japanese breast cancer survivors during and after the state of emergency declaration (SOED) due to the spread of COVID-19. Participants were survivors of stage I-IIa breast cancer diagnosed between the ages of 18 and 60 years who wore…
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Artikel Jurnal
Toe grip strength training improves gait performance and prevents falls in patients after total knee arthroplasty
Falls after total knee arthroplasty are common in knee osteoarthritis patients due to advanced age and implant-induced sensory function changes. We reported the influence of toe grip strength on falls in knee osteoarthritis patients. This study aimed to determine whether toe grip strength training…
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Artikel Jurnal
Improvements in short sprint performance by combining hopping and transcranial direct current stimulation
The optimization of descending motor commands from the central nervous system is essential for maximizing performance during short-distance running. Recent studies have shown that transcranial direct current stimulation (tDCS) can modulate central nervous system excitability and enhance exercise…
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Artikel Jurnal
Effects of nicotinamide mononucleotide and paprika xanthophyll on endurance performance: a randomized, placebo-controlled, double-blind, parallel group study
Efficient energy production is essential for endurance performance, and thus it is important to promote mitochondrial ATP production. Nicotinamide mononucleotide (NMN) is converted to the coenzyme nicotinamide adenine dinucleotide (NAD+), which contributes to mitochondrial ATP production…
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Artikel Jurnal
Association between changes in implementation of group exercise and incidence of frailty among Japanese non-frail older adults: 2018 and 2020 surveys including the COVID-19 pandemic
The coronavirus disease 2019 (COVID-19) pandemic has hampered group exercise. We aimed to determine the relationship between group-exercise implementation status in 2018 and 2020 and the incidence of frailty in 2020, including the COVID-19 pandemic among older adults in Japan. This longitudinal…
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Artikel Jurnal
Carbohydrate mouth rinse during physical activity to improve cognitive function: a randomized cross-over trial
The dorsolateral prefrontal cortex (DLPFC) is a brain region responsible for executive function. Recent studies have reported that low-intensity physical activity (LPA) can activate this region and improve executive function. Carbohydrate mouth rinse (CMR), an ergogenic conditioning method in…
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Artikel Jurnal
Acceptable walking time as an indicator of walking behavior among Japanese working-age population: a cross-sectional study
Walking for transportation (using your feet to travel to a destination) is influenced by multiple determinants, including psychological perceptions and environmental factors. Acceptable walking time indicates the maximum time (in minutes) a person would walk to reach a destination, and is a…
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Artikel Jurnal
Relationship between running step frequency and oxygen consumption in low-speed running
This study aimed to determine the effect of running step frequency (SF) on oxygen consumption during running on spot (ROS) exercises and low-speed running in adult male and female participants. Twenty Japanese participants (22 ± 1.2 years) were included. ROS exercises and running speeds of 4 km h-1…
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Artikel Jurnal
Prolonged cortical silent period of the cervical muscle in American college football players with sports-related concussions
American football (AF) has a high incidence of sports-related concussions (SRC), raising concerns about the long-term effects on neuromuscular function. This study aimed to compare the cortical silent period (cSP) and the strength of the cervical muscles to investigate neuromuscular function in…
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Artikel Jurnal
Mechanisms of knee injuries in male university rugby union players: a systematic video analysis and injury surveillance study
Knee injuries in rugby union have higher incidence and severity than other injury types. However, the underlying mechanisms and trauma remain unclear. This study aimed to identify knee injury trends and clarify the associated mechanisms in male university rugby players using longitudinal injury…
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Artikel Jurnal
Marathon time and running distance before marathon race on runners who live in cold, snowy regions
We aimed to examine the relationship between marathon time and running distance during 8 months before a race for runners who live in cold, snowy regions and those who do not. A questionnaire was conducted for male runners who participated in the 2018 Hokkaido Marathon held at the end of August…
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Artikel Jurnal
Effects of dynamic stretching in seated or supine position on blood glucose levels among young adult women wearing maternity simulation jacket
During pregnancy, physiological insulin resistance increases due to endocrine factors secreted by the placenta. Gestational diabetes mellitus is an example of a common complication arising from this phenomenon, for which exercise therapy is used as standard treatment. While the acute effects of…
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Artikel Jurnal
Lower leg vascular conductance in triathletes
Triathlon is an endurance sport that requires high aerobic capacity. Previous studies demonstrated that lower-leg vascular conductance (VC) was associated with maximal oxygen uptake. However, it is unclear whether muscular VC is greater in triathletes versus untrained individuals. To test our…
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Artikel Jurnal
Reliability of ultrasonographic measurement of muscle and tendon morphology using overlapping images method
Previous attempts have been made to superimpose ultrasound images (overlapping images method). The merit of this method is that it enables capturing the entire morphology of the muscle and tendon in the longitudinal direction beyond the width of the ultrasound probe. However, the division points…
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Artikel Jurnal
Effects of rugby-specific concussion awareness program on collegiate rugby union players
This study assessed the effects of a rugby-specific concussion awareness program on improving the recognition of relevant symptoms and knowledge of concussion in male collegiate rugby union players. Thirty-one collegiate rugby union players from Japan were offered a concussion awareness program…