Results 1 to 10 of about 398,371 (285)

Electromyographic Activation of the Pectoralis Major and Triceps Brachii Muscles During Standard, Diamond, and Wide Hand Position Push-Ups [PDF]

Muscles
Studies examining the electromyographic activation of pectoralis major (PM) and triceps brachii (TB) muscles during push-ups of varied hand positions are limited, and findings are inconsistent.
Konstantina Intziegianni, Epifanios Katsamis, Marcos Michaelides, Koulla Parpa   +3 more
doaj   +2 more sources

The Effect of a Novel Achilles Brace on Concentric and Eccentric Achilles Tendon Loading During Tendon Tear Mechanisms [PDF]

Life
(1) Achilles tendon rupture is one of the most severe lower-limb injuries, frequently occurring during movements involving maximal dorsiflexion with the knee at near-full extension.
Roni Gottlieb, Shai Greenberg, Asaf Shalom, Julio Calleja Gonzalez   +3 more
doaj   +2 more sources

Propolis polyphenols: A review on the composition and anti-obesity mechanism of different types of propolis polyphenols

Frontiers in Nutrition, 2023
Obesity, one of the most common nutritional diseases worldwide, can lead to dyslipidemia, high blood sugar, high blood pressure, and inflammation. Some drugs have been developed to ameliorate obesity.
Liuying Zhu, Jinwu Zhang, Hui Yang, Guangyan Li, Guangyan Li, Hongyan Li, Zeyuan Deng, Bing Zhang   +7 more
doaj   +1 more source

Nighttime as Experiences: The Influence of Perceived Value on Urban Waterfront Night Cruise Loyalty

SAGE Open, 2022
Urban river tourism can benefit considerably from nighttime business; however, few studies have examined tourist loyalty in the context of urban waterfront night cruises (UWNCs).
Gouxiong Yu, Jinwen (Jimmy) Tang, Junli Na, Tiancheng Ma   +3 more
doaj   +1 more source

Speed Matters in Nordic Hamstring Exercise: Higher Peak Knee Flexor Force during Fast Stretch-Shortening Variant Compared to Standard Slow Eccentric Execution in Elite Athletes

Sports, 2023
Hamstring strain injuries are prevalent in many sports. Research has demonstrated that the Nordic hamstring exercise (NHE), a knee-dominant exercise addressing the posterior chain muscles, can aid in reducing the risk of hamstring injuries in athletes ...
Jesper Augustsson, Tobias Alt, Håkan Andersson   +2 more
doaj   +1 more source

Elliptical concentrators [PDF]

Applied Optics, 2006
Nonimaging optics is a field devoted to the design of optical components for applications such as solar concentration or illumination. In this field, many different techniques have been used to produce optical devices, including the use of reflective and refractive components or inverse engineering techniques.
García Botella, Ángel, Álvarez FernándezBalbuena, Antonio, Bernabeu Martínez, Eusebio   +2 more
openaire   +4 more sources

Surface Electromyographic Activity of the Rectus Abdominis and External Oblique during Isometric and Dynamic Exercises

Journal of Functional Morphology and Kinesiology, 2022
Exercises for the abdominal muscles are widely used in athletic activities for strength training and prevention of low back disorders. The timing and volume of muscle activation for various movements have not yet been clarified.
Athanasios Mandroukas, Yiannis Michailidis, Angelos E. Kyranoudis, Kosmas Christoulas, Thomas Metaxas   +4 more
doaj   +1 more source

10% Higher Rowing Power Outputs After Flexion-Extension-Cycle Compared to an Isolated Concentric Contraction in Sub-Elite Rowers

Frontiers in Physiology, 2020
The resulting muscular performance is considered notably higher during a stretch shortening cycle (SSC) compared to an isolated concentric contraction. Thus, the present study examined the occurrence and magnitude of rowing performance enhancement after ...
Steffen Held, Tobias Siebert, Lars Donath   +2 more
doaj   +1 more source

Elbow Joint Angles in Elbow Flexor Unilateral Resistance Exercise Training Determine Its Effects on Muscle Strength and Thickness of Trained and Non-trained Arms

Frontiers in Physiology, 2021
The present study compared two unilateral arm curl resistance exercise protocols with a different starting and finishing elbow joint angle in the same ROM for changes in elbow flexors strength and muscle thickness of the trained and non-trained arms ...
Shigeru Sato, Riku Yoshida, Ryosuke Kiyono, Kaoru Yahata, Koki Yasaka, João Pedro Nunes, Kazunori Nosaka, Masatoshi Nakamura, Masatoshi Nakamura   +8 more
doaj   +1 more source

Structural Behavior of GFRP - RC Slender Columns Under Various Eccentricity Loading Conditions

Civil and Environmental Engineering, 2023
Glass fibers reinforced polymer (GFRP) were used to longitudinally and transversally 12 columns and while the other 4 columns were reinforced with steel or steel and GFRP as reference specimens. This research dealt with several parameters under different
Hamed Rusul Z., Hassan Hassan F.
doaj   +1 more source