Article
Multidisciplinary Sciences
Koji Murofushi, Tomoki Oshikawa, Koji Kaneoka, Hiroshi Akuzawa, Daisuke Yamaguchi, Sho Mitomo, Hidetaka Furuya, Kenji Hirohata, Kazuyoshi Yagishita
Summary: The study found differences in muscle activation of lower limb and trunk between Hammerobics-synchronized squats and conventional isometric squats. The former can better activate the abductor hallucis, tibialis anterior, tibialis posterior, peroneus longus, semitendinosus, and multifidus muscles.
SCIENTIFIC REPORTS
(2022)
Article
Physiology
Jacques Abboud, Arianne Lessard, Martin Descarreaux
Summary: This study aimed to characterize superficial lumbar muscle recruitment strategies under the influence of delayed-onset muscle soreness (DOMS) during unexpected trunk perturbations. The results showed that under DOMS effects, there was no attenuation of lumbar muscle activity amplitude, the spatial distribution of muscle activity remained similar, and there were no significant changes in reflex activity latency and trunk flexion movement.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Chan-Yang Ju, Jong-Hyeon Kim, Dong-Ho Lee
Summary: This paper introduces a self-training method for golf using digital fitness technology, which analyzes posture and swing motions to provide guidance. The system detects biased pose joints and utilizes geometric information to offer specific and intuitive feedback for learners to improve their golf swing. This research enhances the accuracy of posture analysis and contributes to the application of digital fitness technologies in self-training.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Analytical
Ran Dong, Soichiro Ikuno
Summary: In golf swing analysis, traditional tools like high-speed cameras and Trackman devices are expensive and inaccessible for golfers. This research proposes using an affordable inertial motion capture system to accurately record golf swing movements, specifically focusing on distinguishing between straight and slice trajectories. The Hilbert-Huang transform (HHT) is employed to analyze the opening motion of the body's left half and the head-up motion, which are associated with a slice trajectory. The research found discernible differences in the golf swing's moment of impact between straight and slice trajectories within the instantaneous frequency domain.
Article
Multidisciplinary Sciences
Sung Eun Kim, Jangyun Lee, Sae Yong Lee, Hae-Dong Lee, Jae Kun Shim, Sung-Cheol Lee
Summary: The study found that the position of the golf ball along the mediolateral direction can have significant effects on weight distribution, shoulder angle, and body center of mass position, causing a chain reaction throughout the golf swing process.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Enrique Navarro, Jose M. Mancebo, Sima Farazi, Malena del Olmo, David Luengo
Summary: This study compared the pressure distribution patterns on the foot insoles of golfers at different skill levels during the golf swing. The results showed differences in pressure distribution patterns between the left and right foot, but the patterns remained almost the same when switching between different clubs. Significant differences were also observed between professional golfers and players with medium and high handicaps in their pressure distribution patterns.
APPLIED SCIENCES-BASEL
(2022)
Article
Computer Science, Information Systems
Kyeong-Ri Ko, Sung Bum Pan
Summary: This study overcomes the limitations of the existing three-dimensional golf swing analysis system by utilizing deep learning technology to analyze three-dimensional quantitative information from sequence images acquired with a single camera. The results demonstrate the feasibility and accuracy of three-dimensional quantitative analysis based on sequence images.
MULTIMEDIA TOOLS AND APPLICATIONS
(2021)
Article
Engineering, Mechanical
Kosuke Okazaki, Nobutaka Tsujiuchi, Akihito Ito, Masahiko Ueda, Yuto Nakamura
Summary: This study used the short-time Fourier transform (STFT) to analyze torque data of golf swings and explored how variations in shaft mass affect the swing. The results confirmed that the shaft mass can influence the spectrogram values and the shaft tip velocity.
JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES
(2023)
Article
Sport Sciences
Zachariah I. Gould, Jon L. Oliver, Rhodri S. Lloyd, Rich Neil, Mark Bull
Summary: The study found a close association between golfers' movement competency as measured by GMS and swing mechanics, with those scoring higher in GMS demonstrating better spine control and greater x-factor during the golf swing.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2021)
Article
Biophysics
Sang Hyeon Kang, Gary A. Mirka
Summary: Recent evidence suggests that maintaining submaximal trunk flexion postures may lead to significant creep deformation of the viscoelastic lumbar tissues. In this study, participants maintained a submaximal trunk flexion posture for 12 minutes, which resulted in significant increases in lumbar flexion angle and EMG-off lumbar flexion angle for the paraspinals.
JOURNAL OF BIOMECHANICS
(2023)
Article
Chemistry, Multidisciplinary
Jun Lin, Xiaozhang Chen, Xinpei Duan, Zhiming Yu, Wencheng Niu, Mingliang Zhang, Chang Liu, Guoli Li, Yuan Liu, Xingqiang Liu, Peng Zhou, Lei Liao
Summary: This study demonstrates ultra-low subthreshold swing (SS) and ultra-steep slope by integrating atomic-scale resistive filament with conventional MoS2 transistors. The nanoscale resistive filament ensures rapid device switching, leading to ultra-steep SS. The study also shows high on/off ratio and superior reproducibility and reliability. These findings provide exciting potential for future low-power electronics and monolithic integration.
Article
Chemistry, Analytical
Sung Eun Kim, Jayme Carolynn Burket Koltsov, Alexander Wilder Richards, Joanne Zhou, Kornel Schadl, Amy L. Ladd, Jessica Rose
Summary: This study investigates the accuracy of IMU-based golf swing kinematics compared to lab-based 3D motion capture. The results show that IMUs provide a practical and viable alternative for golf swing analysis, offering accessible and wearable biomechanical feedback to enhance performance.
Article
Neurosciences
Stephen J. Preece, Wael Alghamdi
Summary: This study demonstrated a strong correlation between trunk flexion and knee flexor muscle activity, highlighting the importance of trunk flexion in influencing lower limb kinetics and muscle activation patterns. Increasing trunk flexion was found to increase hip and ankle moments, but did not change knee moments. Additionally, there was a notable shift in hamstring activity with increasing trunk flexion, particularly in the medial hamstrings.
Article
Neurosciences
Joyce B. Weersink, Bauke M. de Jong, David M. Halliday, Natasha M. Maurits
Summary: The swinging of the arms during human gait supports efficient lower limb muscle activation, suggesting a neural coupling between the upper and lower limbs. Intermuscular coherence analysis revealed significant coherence between upper and lower limbs, indicating common subcortical and cortical drivers coordinating the rhythmic four-limb gait pattern. Findings suggest that arm swing may serve as an effective rehabilitation therapy for impaired gait in neurological diseases.
JOURNAL OF PHYSIOLOGY-LONDON
(2021)
Article
Medicine, General & Internal
Ammal Imran Qureshi, M. Noah H. Khan, Hamayle Saeed, Bakht Yawar, Misbah Malik, Mariam Saghir, Arif Hasan Khan
Summary: This study investigates the injury patterns among male and female professional golfers and reveals that the elbow is the most common injured region. It also shows a significant relationship between the number of years playing golf and the history of injury.
ANNALS OF MEDICINE AND SURGERY
(2022)
Article
Engineering, Biomedical
Joao R. Vaz, Nick Stergiou, Ana Diniz, Ricardo Dinis, Pedro Pezarat-Correia
Summary: Knee valgus motion during landing tasks is suggested as a predictor of future knee injury. Excessive medial knee displacement (MKD) leads to greater randomness in centre of pressure (CoP) fluctuations, indicating decreased ability to adapt to environmental demands and an increased risk of injury.
SPORTS BIOMECHANICS
(2023)
Article
Chemistry, Analytical
Philipp Bauer, Joao Sa Gomes, Joao Oliveira, Paulo Santos, Pedro Pezarat-Correia, Joao R. Vaz
Summary: The present study aimed to investigate the effects of a continuous visual feedback and the isometric contraction nature on the complexity and variability of force. Results showed that the push isometric task with visual feedback (P-visual) had higher complexity and decreased variability compared to the other tasks. There were no significant differences between the hold isometric task without visual feedback (Hnon-visual) and the hold isometric task with visual feedback (H-visual). These findings suggested that different motor control strategies were induced by the two isometric tasks, and the influence of visual feedback depended on the type of isometric task.
Article
Chemistry, Analytical
Marina Saraiva, Joao Paulo Vilas-Boas, Orlando J. Fernandes, Maria Antonio Castro
Summary: This study aimed to analyze the effect of two motor tasks with different difficulty levels on the static standing posture in healthy young adults. The results showed that performing a concurrent difficult motor task led to impaired postural control, reduced complexity, and adaptability compared to a postural single task and a concurrent easy motor task.
Article
Chemistry, Analytical
Paulo Miranda-Oliveira, Marco Branco, Orlando Fernandes
Summary: In this study, a developed instrument encompassing an IMU was used to assess sprinting and analyze athlete performance. The number of steps, ground contact time, flight time, and step time were determined using a high-speed camera as a reference. The acceleration components and acceleration ratio were correlated with the performance achieved in each split time. The study revealed that the IMU device had high accuracy in identifying step counts and showed a correlation between step time and performance. The importance rating for this study is 8 out of 10.
Article
Nutrition & Dietetics
Joana M. Correia, Paulo D. G. Santos, Pedro Pezarat-Correia, Claudia S. Minderico, Jorge Infante, Goncalo V. Mendonca
Summary: This study compared the effects of resistance training combined with time-restricted eating (TRE) and habitual diet on body composition and strength performance in trained young males. Both interventions resulted in decreased fat mass, but no changes in fat-free mass. Non-TRE was associated with better lower body jump performance, while TRE led to higher peak force and dynamic strength in the upper body. These findings suggest that the combination of TRE and resistance training may be beneficial for upper body high-speed strength, but not lower body training.
Article
Biochemistry & Molecular Biology
Santos Villafaina, Pablo Tomas-Carus, Vanda Silva, Ana Rodrigues Costa, Orlando Fernandes, Jose A. Parraca
Summary: In this study, it was found that people with fibromyalgia (FM) have different muscle oxygen levels compared to healthy controls during a fatigue protocol. Additionally, the peak torque and total work performed were significantly lower in people with FM.
Article
Materials Science, Biomaterials
Joao R. Vaz, Luis M. Silva, Nick Stergiou
Summary: Physiological processes exhibit circadian rhythms with approximately 24-hour oscillations. Motor performance and walking can be affected by these rhythms. This study explores how the fluctuations in healthy gait, which have a fractal-like structure, are influenced by the time of day and chronotype.
Article
Chemistry, Multidisciplinary
Catarina M. Amaro, Ana M. Amaro, Beatriz B. Gomes, Maria Antonio Castro, Rui Mendes
Summary: This study aimed to evaluate the differences in visual behavior of basketball players at different shooting positions and angles. Tobii Pro Glasses 3 was used to measure the number and duration of fixations on the target during shooting. Results showed statistically significant differences in fixations, duration, and accuracy between different shooting distances. There were no significant differences between different shooting angles. Shooting accuracy was higher when the athlete focused on the target for a longer time, particularly in free throw shooting.
APPLIED SCIENCES-BASEL
(2023)
Article
Sport Sciences
James W. Kearney, Megan N. Sax van der Weyden, Nelson Cortes, Orlando Fernandes, Joel R. Martin
Summary: Sixty percent of law enforcement officers experience low back pain, with the duty belt commonly reported as a contributing factor. A study found that the duty belt does not alter muscular activity during hip hinging or lifting objects from the ground, and the tactical vest is perceived as more comfortable and less restrictive.
JOURNAL OF FUNCTIONAL MORPHOLOGY AND KINESIOLOGY
(2023)
Article
Psychology, Clinical
Marina Saraiva, Maria Antonio Castro, Joao Paulo Vilas-Boas
Summary: Postural control relies on both automatic processes and attentional resources. The dual-task paradigm can be used to examine how the performance of motor and/or cognitive tasks interfere with each other. Studies have shown that when individuals perform two tasks simultaneously, postural stability can decrease due to the attention resources needed for task performance. However, the cortical and muscular activity patterns during dual-task performance are not well understood.
EUROPEAN JOURNAL OF INVESTIGATION IN HEALTH PSYCHOLOGY AND EDUCATION
(2023)
Article
Psychology, Clinical
Joel Marouvo, Nuno Tavares, Goncalo Dias, Maria Antonio Castro
Summary: This study aimed to analyze the influence of cryotherapy on shoulder proprioception in badminton athletes. Thirty federated badminton athletes were included in this study. The results showed that cryotherapy had no significant impact on joint position and force senses.
EUROPEAN JOURNAL OF INVESTIGATION IN HEALTH PSYCHOLOGY AND EDUCATION
(2023)
Article
Health Care Sciences & Services
Carolina Alexandra Cabo, Orlando Fernandes, Maria Mendoza-Munoz, Sabina Barrios-Fernandez, Laura Munoz-Bermejo, Rafael Gomez-Galan, Jose A. Parraca
Summary: Research shows that exercise training programmes can improve older adults' health-related quality of life and well-being. This study aims to investigate the effects of an active retirement programme on Portuguese older adults, focusing on body composition, physical fitness, HRQoL, and physical activity level (PAL).
Article
Medicine, General & Internal
Nuno Batalha, Joao Paulo Sousa, Orlando Fernandes, Eduardo Dias, Jose A. Parraca, Santos Villafaina
Summary: The COVID-19 confinement had significant impact on the physical condition of handball players, particularly in terms of shoulder rotator and range of motion. The study found that the 11-week detraining period imposed by the pandemic resulted in reduced peak torque, increased fatigue index, and decreased range of motion in the shoulder rotator. Furthermore, the ball release velocity during both standing and jump shots was significantly reduced. Strengthening and recovering the shoulder rotator and range of motion seems necessary to prevent shoulder injuries after a detraining period.
MEDICINA-LITHUANIA
(2023)
