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Zeynep Hazar Kanik, Seyit Citaker, Canan Yilmaz Demirtas, Neslihan Celik Bukan, Bulent Celik, and Gurkan Gunaydin

can imagine). 16 Maximal Isometric Strength Quadriceps muscle strength was assessed using a handheld digital dynamometer (Nicholas Manual Muscle Tester; Lafayette® Instrument, Lafayette, IN). The subjects were seated with hips and knees at 90° flexion and were instructed to extend the knee fully. The

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A. Dallaway, J. Hattersley, J. Tallis, D. Renshaw, C. Griffen, and M. Duncan

doi: 10.1371/journal.pone.0048044 Rantanen , T. , Era , P. , & Heikkinen , E. ( 1994 ). Maximal isometric strength and mobility among 75-year-old men and women . Age and Ageing, 23 ( 2 ), 132 – 137 . PubMed ID: 8023721 doi: 10.1093/ageing/23.2.132 Rantanen , T. , Era , P

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Thomas Cattagni, Vincent Gremeaux, and Romuald Lepers

her maximal isometric strength (90 y). It is worth noting that the equation used to calculate DL’s physiological age only included females aged from 21 to 75 years, which may have led to an overestimation of her physiological age. Indeed, an accelerated decline in physical performance has been

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Reid Reale, Gary Slater, Gregory R. Cox, Ian C. Dunican, and Louise M. Burke

isometric strength, lower body power, and repeated sprint ability (RSA) tests (Figure  2 ). Subjects performed familiarization sessions on Day −1, with preintervention testing undertaken on Day 0 and replicated on Day 6. Testing occurred at the same time daily, following morning blood collection and a

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Anthony C. Santago II, Meghan E. Vidt, Xiaotong Li, Christopher J. Tuohy, Gary G. Poehling, Michael T. Freehill, and Katherine R. Saul

. 2016 ; 44 : 238 – 244 . PubMed. doi:10.1016/j.gaitpost.2015.12.038 27004665 10.1016/j.gaitpost.2015.12.038 17. Rantanen T , Era P , Heikkinen E . Physical activity and the changes in maximal isometric strength in men and women from the age of 75 to 80 years

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Shaun O’Leary, Carlijn Hoogma, Øystein Molland Solberg, Sara Sundberg, Ashley Pedler, and Luke Van Wyk

, Ostergaard K , Danneskiold-Samsoe B . Maximal isometric strength of the cervical musculature in 100 healthy volunteers . Spine . 1999 ; 24 ( 13 ): 1343 – 1348 . PubMed ID: 10404577 doi:10.1097/00007632-199907010-00012 10404577 10.1097/00007632-199907010-00012 35. Seng K-Y , Peter V-S , Lam

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Ty B. Palmer, Jose G. Pineda, and Rachel M. Durham

squat device to ensure the same stance for each trial. For each assessment, participants were instructed to keep their cervical spine in a neutral position. All participants wore tennis shoes and no weight belts or knee wraps were permitted during testing. 21 Before the maximal isometric strength

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Janie Cournoyer, David Koncan, Michael D. Gilchrist, and T. Blaine Hoshizaki

maximal isometric strength in children is not well defined in the literature. The relationship between grip strength and neck strength demonstrated by Hamilton et al 13 was used to calculate the scaling factor. The ratio of grip strength of an 11.5-year-old to a 15-year-old was determined to be 49.1%. 13

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Darren Steeves, Leo J. Thornley, Joshua A. Goreham, Matthew J. Jordan, Scott C. Landry, and Jonathon R. Fowles

-water performance in elite flatwater kayakers. Future studies may consider looking at the contribution of the leg muscles by monitoring the force production on the footrest. Practical Application Maximal isometric strength has been used as a performance marker and to study the adaptation to training in other sports

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Andrés Pérez, Domingo J. Ramos-Campo, Cristian Marín-Pagan, Francisco J. Martínez-Noguera, Linda H. Chung, and Pedro E. Alcaraz

individual’s best performance was used for data analysis. Following the methodology proposed by Boullosa et al, 19 jump height and peak power during the concentric phase (in watts per kilogram) were analyzed. Maximal isometric strength and neuromuscular activity were also determined in the knee extensors of