Grippers

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A mass market, plastic-handled gripper Gripper.jpg
A mass market, plastic-handled gripper
A gripper being closed Gripclosed.jpg
A gripper being closed

Grippers, sometimes called hand grippers, are primarily used for testing and increasing the strength of the hands; this specific form of grip strength has been called crushing grip, [1] which has been defined as meaning the prime movers are the four fingers, rather than the thumb. [2]

Contents

There are differences from brand to brand, but the common feature of standard grippers is that they use a torsion spring fitted with two handles. The exact dimensions of these elements vary, as well as the materials used to make them; the springs are made from various types of steel, and the handles are generally made from wood, plastic, steel, or aluminum.

History

Grippers from the early part of the 20th century to the middle of the 20th century typically had wooden handles, were quite easy for a strong person to close, and were a regularly advertised product in bodybuilding-weightlifting magazines. [3] Such mass market grippers were largely replaced with inexpensive plastic-handled grippers that are commonly found in sporting goods and exercise equipment stores today.

Top early 20th century professional strongman Thomas Inch had two challenge nutcracker grippers in the 1930s that defied nearly all who tried to close them, [4] and besides their status as a specific challenge, the design and application of this gripper was praised as a sound way to assess grip strength. [5]

In 1964, Iron Man magazine introduced the “Iron Man Super Heavy Grip Developer,” [6] and unlike mass market grippers, these grippers had steel handles, thick springs and were very difficult to close. The popularity of these grippers was limited, and they were discontinued in 1977. [7]

In 1990, IronMind reintroduced the original Iron Man grippers, [8] and then later that year, the company began modifying the design with the stated goal of improving the accuracy, durability and appearance of the gripper, not just making grippers that could tax the strongest men in the world. [9] IronMind also introduced aluminum handles with permanent markings. [10] These two features were later adopted by other manufacturers, including those in low-cost manufacturing centers such as China and India, and have become common on the more difficult grippers, regardless of brand. At the same time, interest in grippers that challenged even the strongest people in the world broadened beyond audiences directly involved with training or physical performance, [11] and have been reported on in such publications as The Sacramento Bee , [12] and BusinessWeek . [13]

Strength levels

Grippers come in a range of strengths, suitable for everyone from beginners to World's Strongest Man winners, such as Magnus Samuelsson, whose YouTube video clip closing the No. 4 Captains of Crush Gripper has been viewed over 2 million times. [14]

In 1991, IronMind began certifying people who could close its toughest grippers under official conditions, and it maintains lists of the people certified on the Captains of Crush No. 3, [15] Captains of Crush No. 3.5 [16] and Captains of Crush No. 4, [17] Closing grippers of this strength level has been compared to crushing a raw potato in one's bare hand. [18] In 2011, IronMind began certifying women who officially closed the Captains of Crush No. 2 Gripper. [19]

Use

The user holds the gripper in one hand and squeezes the two handles together until they touch. Once touched, the handles are released and the movement is repeated. Variations of this basic movement include negatives [see below], and a variety of partial movements. For example, if the strength of the gripper is beyond that of the user, the user might apply maximum force, moving the handles as far as possible, even if the handles cannot be made to touch. Another partial movement involves using two hands to squeeze the handles within approximately 19 mm (3/4 inch) of each other, releasing one hand, and then using the other hand to make the handles of the gripper touch each other. Negatives involve starting the gripper handles touching and then resisting as the gripper opens up, in an eccentric contraction.

Training

Historically, users trained with grippers by doing high repetitions, but it has been argued that while this was necessary in the days before more challenging grippers were available, this is an inefficient way to increase strength, and that lower repetitions are preferred, consistent with other strength-training protocols [20] [21] Joe Kinney, the first man certified for closing the Captains of Crush No. 4 gripper, [17] [22] is credited with introducing the idea of negatives to gripper training. [23] The idea of starting a gripper from the "deep set" position (approximately 19 mm space in between the handles) originated from an ebook that was inspired by Kinney's success, but then focused on training principles and techniques developed by the author, not Kinney. [24] [25] Randall Strossen has argued that the generally accepted principles of effective strength training apply to grippers, just as they do to any other movement. [10] Performing strongman John Brookfield developed strap holds, the idea of hanging a small weight from a strap or belt which is kept in place by squeezing the handles of a gripper hard enough to keep the weight from falling [26] one of many training innovations he pioneered. [27] Arm wrestlers were among the first to establish specific training protocols using grippers, as part of a larger strength training program for their sport. [28]

Ratings and accuracy

To explain the amount of variability to expect, grippers have been likened to uncalibrated barbell plates, [10] [29] which at its most basic level means that they will have greater variations than calibrated barbell plates (i.e., barbell plates that must conform to narrowly defined, pre-established standards), [30] but there is evidence that substantial levels of accuracy are achievable for grippers. [10]

Grippers are commonly rated in such units as pounds per square inch to inch-pounds to inches, but arguments have been presented that in many cases these numbers have little real meaning and in all cases they are not as transparent as the label (in pounds or kilos) on a barbell plate, so they should be viewed with caution. [10] Similarly, “calibration” is sometimes misused, as when a gripper is rated, whether subjectively [31] or objectively, [32] Instead of made to conform to an external standard.

Misconceptions

Along with misstatements about calibration, two other misconceptions about grippers were introduced in 2003. [33] One of the notions was that the characteristics of the springs in grippers would change over the course of a certain number of repetitions before they stabilized, in a process that was labeled “seasoning.” [33]

An alternative view is that a spring will bend when the force required to close the gripper exceeds the spring's mechanical limits, but that such bending does not occur in grippers that are properly designed and built. [10] Such bending would make the gripper easier to close on successive attempts, while the grippers with springs that did not bend would remain constant. [10]

The arm of a torsion spring with the sharper bend was termed the “dogleg”, [33] and while noting that it would make no difference in the force required to close the gripper, it was stated that it took “less effort” [33] to initially deflect the gripper if one pushed on the dogleg. Others have argued that grippers are symmetric with regard to forces applied to the handles and that the dogleg is another myth, and this has been demonstrated with an analysis of the underlying physics, [34] but the concepts remain in use. [35] Subjective reports and objective facts about grippers don't always match. [36]

Non-traditional grippers

Traditional grippers are used by the whole hand at once, although the thumb is stationary and the other four fingers apply the force required to close the gripper, but specialty grippers exist that allow the fingers to be trained one or two at a time. [37] [38] Traditional grippers have handles of fixed lengths, but at different times, grippers have been introduced that have variable-length handles, allowing the user to change the amount of leverage and the range of motion involved when closing the gripper. [39]

Collectors

Grippers have a longstanding tradition in physical culture and different models are sought out by specialist collectors, with England’s David Horne possibly having the world’s foremost collection. [40] [41]

Another premiere collector and with the World's Largest Known Private Collection of Hand Grippers belongs to Joe Musselwhite from Texas with 338 hand grippers (and growing) from 17 different countries and over 40 different brand names. This record was established on September 1, 2014.

Notes

  1. ↑ "ironmind captain of crush grippers - SFUK Reviews". Sfuk.tripod.com. Archived from the original on 2008-12-31. Retrieved 2011-09-07.
  2. ↑ Strossen, Randall J. CTD (Crushed-to-Dust) Cube: The 3 Faces of Grip Strength. IronMind
  3. ↑ Hoffman, Bob. Strength and Health, January 1947, p. 48. York Barbell Company: York, Pennsylvania.
  4. ↑ Horne, David, Iron Grip, The Thomas Inch Gripper, Vol. 1 - No. 3, June 2001, pp. 4-5
  5. ↑ Aston, Edward. How To Develop A Powerful Grip (second edition). The Mitre Press: London, 1946.
  6. ↑ Rader, Peary. Iron Man. October–November–December 1964. Vol. 24, No. 1, p. 58
  7. ↑ Roark, Joe (April 1990). "The Iron Man Hand Grippers" (PDF). Iron Game History. 1 (2): 18–19. Retrieved 2011-09-07.
  8. ↑ Iron Man, September 1990, p. 96
  9. ↑ IronMind catalog. “Tools of the trade for serious strength athletes . . . most of them unique, all of them top quality”. Volume 1 - Number 1, 1990, p. 6
  10. 1 2 3 4 5 6 7 Strossen, Randall J.; Kinney, J.B.; Holle, Nathan (2009). Captains of Crush Grippers: What they are and how to close them (Second ed.). Ironmind. ISBN   978-0-926888-84-5.
  11. ↑ "Class Notes - Spotlight - Randall Strossen". Stanford Magazine. September–October 2008. Retrieved 2011-09-08.
  12. ↑ Robertson, Blair (2008-05-02). "He build his company on a very firm handshake". The Sacramento Bee. p. B1.
  13. ↑ Lee, Louise (2009-02-13). "Ironmind Captains of Crush: A Lesson in Clever Marketing". Archived from the original on March 3, 2009. Retrieved 2011-09-07.
  14. ↑ "World's Strongest Arms . Retrieved on 2011-11-03
  15. ↑ "Who's Who No. 3 Captains of Crush Grippers". IronMind. Archived from the original on 2010-01-08. Retrieved 2011-09-07.
  16. ↑ "Who's Who No. 3.5 Captains of Crush Grippers". IronMind. Retrieved 2011-09-07.
  17. 1 2 "Who's Who No. 4 Captains of Crush Grippers". IronMind. Retrieved 2011-09-07.>.
  18. ↑ "Class Notes - Spotlight - Randall Strossen". Stanford Magazine. September/October 2008. Retrieved 2011-11-02.
  19. ↑ "Captains of Crush No. 2 Gripper: A New Certification for Women," Archived 2011-09-28 at the Wayback Machine May 12, 2011. Retrieved on 2011-11-03.
  20. ↑ Training manual for Captains of Crush Grippers. IronMind, 2007
  21. ↑ "Captains of Crush Hand Grippers - Training and FAQ". Captainsofcrushgrippers. Archived from the original on 2011-09-02. Retrieved 2011-09-07.
  22. ↑ Strossen, Randall J. “Kinney Do It? Yes! Joe’s the First 4-Evermore,” MILO: A Journal For Serious Strength Athletes, Volume 5 - Number 4 (March 1998), pp. 8 - 11. IronMind
  23. ↑ Strossen, Randall J. J. B. Kinney Grabs a Challenge and Wins. MILO: A Journal For Serious Strength Athletes, Volume 5 - Number 2 (September 1997), pp. 29 - 32). IronMind.
  24. ↑ Piche, Bill. The KTA Program [previously called, Kinney Training Adapted]. Ebook retrieved September 2, 2003
  25. ↑ Strossen, Randall J. "Certification on Captains of Crush Grippers: "Credit Card Sets," "Old Rules" and "New Rules"". Ironmind. Retrieved 2011-09-07.
  26. ↑ Brookfield, John. Handgrippers: Closing The Gap. MILO: A Journal For Serious Strength Athletes, Volume 4 - Number 2 (July 1996), pp. 22- 23. IronMind.
  27. ↑ Brookfield, John. The Mastery of Hand Strength. Second Edition. IronMind.
  28. ↑ Doherty, Mark J. Arm-Wrestling For Everyone. Quinlan Press: Boston, 1986.
  29. ↑ IronMind Catalog. 1999–2000. Vol. 9, p. 38
  30. ↑ "International Weightlifting Federation Technical and Competition Rules" (PDF). Archived from the original (PDF) on 2011-02-08. Retrieved 2010-02-20.
  31. ↑ Siversson, Mikael. Gripper in Competition. Iron Grip, Vol. 3, No. 2. Edited by David Horne & Elizabeth Talbott, pp. 24-25.
  32. ↑ Morton Gripper Calibration Device (PDF), retrieved 2010-02-19
  33. 1 2 3 4 Szimanski, John (2003). Torsion Spring Grippers. Piedmont Design Associates. pp. 10–11. ISBN   0-9743143-1-5.
  34. ↑ Weir, Joe. "Myths and Misconceptions: Torsion Springs, The Dog Leg and 'Handedness'" . Retrieved 2010-02-20.
  35. ↑ Piche, Bill. KTA [formerly: Kinney Training Adapted]. c. 2003
  36. ↑ Strossen, Randall J. (2009-07-16). "Another Gripper Myth Bites the Dust". IronMind News. Retrieved 2011-09-09.
  37. ↑ "IronMind Highlights — Captains of Crush Hand Grippers and Other Grip Milestones". Captainsofcrushgrippers. Archived from the original on 2009-06-18. Retrieved 2011-09-07.
  38. ↑ "IMTUG: The Two-Finger Utility Gripper". Ironmind. Retrieved 2011-09-07.
  39. ↑ Lewis. Jim. JB Gripper Basic Training Manual, 2007.
  40. ↑ Horne, David & Talbott, Elizabeth. David Horne’s Gripper Collection. Part Three. Iron Grip, Vol. 4, No. 2 (April 2004), pp. 15- 16.
  41. ↑ Strossen, Randall J. (2010-02-21). "World of Grip Strongest Hands Series: David Horne Wins Second Leg". Ironmind. Retrieved 2011-09-07.

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