(PF) and isometric rate of force development (RFD) during single-joint knee extension 8 , 9 and the isometric mid-thigh pull (IMTP). 10 , 11 In addition, these associations are stronger when RFD is calculated over longer epochs (eg, r = .57 at 30 ms [from onset of force production] compared with
Paul Comfort, Thomas Dos’Santos, Paul A. Jones, John J. McMahon, Timothy J. Suchomel, Caleb Bazyler and Michael H. Stone
Claire J Brady, Andrew J Harrison, Eamonn P Flanagan, G Gregory Haff and Thomas M Comyns
This investigation examined the relationships between the isometric mid-thigh pull (IMTP), isometric squat (ISqT) and sprint acceleration performance in track & field sprinters, and to determine whether there are differences between males and females.
Fifteen male and ten female sprinters performed 3 maximal effort IMTPs, ISqTs and 3 x 30 m from blocks.
Among males, results showed significant negative correlations between IMTP and ISqT peak force, relative peak force, force at 100, 150 and 200 ms, rate of force development (0 – 150, 0 – 200 ms) and impulse (0 – 200 ms) and 0 – 5 m time (r = -0.517 to -0.714; P < 0.05). IMTP impulse significantly predicted 0 – 5 m time (B = -0.582, P = 0.023). ISqT relative peak force significantly predicted 0 – 5 m time (B = -0.606, P = 0.017). Among females, no IMTP or ISqT variables significantly correlated with any sprint times. Males measured significantly higher than females for all IMTP measures except for relative peak force. Males were significantly faster than females at all splits. When comparing measures of the ISqT, there were no significant differences between males and females.
Variables measured during the IMTP and ISqT significantly correlated with 0 – 5 m sprint performance in male athletes. Isometric strength can have a sizable influence on 0 – 5 m time, but in some cases the maximum effect could be very small.
Claire J. Brady, Andrew J. Harrison, Eamonn P. Flanagan, G. Gregory Haff and Thomas M. Comyns
C , et al . Relationships of isometric mid-thigh pull variables to weightlifting performance . J Sports Med Phys Fitness . 2013 ; 53 : 573 – 581 . PubMed ID: 23903539 23903539 3. Buckner SL , Jessee MB , Mattocks KT , et al . Determining strength: a case for multiple methods of
Antonio Dello Iacono, Stephanie Valentin, Mark Sanderson and Israel Halperin
on isometric midthigh-pull kinetics . Int J Sports Physiol Perform . 2016 ; 11 ( 2 ): 255 – 260 . doi: 10.1123/ijspp.2015-0222 4. Wang R , Hoffman JR , Tanigawa S , et al . Isometric mid-thigh pull correlates with strength, sprint, and agility performance in collegiate rugby union players
Nick Dobbin, Richard Hunwicks, Ben Jones, Kevin Till, Jamie Highton and Craig Twist
Med . 2014 ; 44 ( 5 ): 603 – 623 . PubMed doi:10.1007/s40279-014-0145-2 10.1007/s40279-014-0145-2 17. De Witt JK , English KL , Crowell JB , et al . Isometric mid-thigh pull reliability and relationship to deadlift 1RM . J Strength Cond Res . 2016 . PubMed doi:10.1519/JSC.0000000000001605
Aaron T. Scanlan, Neal Wen, Joshua H. Guy, Nathan Elsworthy, Michele Lastella, David B. Pyne, Daniele Conte and Vincent J. Dalbo
Res . 2018 ; 32 ( 9 ): 2677 – 2691 . PubMed ID: 29401204 doi: 10.1519/JSC.0000000000002459 29401204 4. Townsend J , Bender D , Vantrease W , et al . Isometric mid-thigh pull performance is associated with athletic performance and sprinting kinetics in Division I men And women’s basketball
Paul Comfort, Christopher Thomas, Thomas Dos’Santos, Paul A. Jones, Timothy J. Suchomel and John J. McMahon
.2015-0222 10.1123/ijspp.2015-0222 26217049 16. Beckham G , Mizuguchi S , Carter C , et al . Relationships of isometric mid-thigh pull variables to weightlifting performance . J Sports Med Phys Fitness . 2013 ; 53 ( 5 ): 573 – 581 . PubMed 23903539 17. Beckham GK , Sato K , Mizuguchi
Jason Lake, Peter Mundy, Paul Comfort, John J. McMahon, Timothy J. Suchomel and Patrick Carden
International Conference of Biomechanics in Sports ; July 12–16 , 2014 . Johnson City, TN, USA . 6. Beckham GK , Suchomel TJ , Bailey CA , Sole CJ , Grazer JL . The relationship of the reactive strength index-modified and measures of force development in the isometric mid-thigh pull . 32nd
Reza Abdollahipour, Ludvík Valtr and Gabriele Wulf
.W. ( 2016 ). The effects of attentional focusing instructions on force production during the isometric mid-thigh pull . Journal of Strength and Conditioning Research, 30 , 919 – 923 . PubMed ID: 27003451 doi: 10.1519/JSC.0000000000001194 Hooyman , A. Wulf , G. , & Lewthwaite , R. ( 2014
Harry G. Banyard, Kazunori Nosaka, Alex D. Vernon and G. Gregory Haff
fatigue by tracking reductions in peak force using maximal isometric force assessments (isometric mid-thigh pull) or PV with ballistic power tests (countermovement jump). 32 , 33 These tests are proven to be valid and reliable, but these assessments do not precisely identify how training loads can be