{"id":19163,"date":"2019-06-11T15:23:07","date_gmt":"2019-06-11T15:23:07","guid":{"rendered":"https:\/\/one.sightlinemg.com\/marinecorpstimes\/uncategorized\/2019\/06\/11\/did-lower-back-injuries-drive-the-commandants-decision-on-planks\/"},"modified":"2026-08-08T20:39:19","modified_gmt":"2026-08-08T20:39:19","slug":"did-lower-back-injuries-drive-the-commandants-decision-on-planks","status":"publish","type":"post","link":"https:\/\/one.sightlinemg.com\/marinecorpstimes\/news\/your-marine-corps\/2019\/06\/11\/did-lower-back-injuries-drive-the-commandants-decision-on-planks\/","title":{"rendered":"Did lower back injuries drive the commandant\u2019s decision on planks?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The top Marine\u2019s decision to authorize planks on the Corps\u2019 annual fitness test may have been born out of a visit he made to a <a href=\"https:\/\/www.marinecorpstimes.com\/news\/your-marine-corps\/2019\/04\/11\/marine-officers-are-more-successful-during-raider-selection-but-marsoc-is-fielding-raiders-at-a-steady-rate\/\" target=\"_blank\">3d Raider Battalion<\/a> training facility in May 2018.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">During the visit to the commando unit at Camp Lejeune, North Carolina, Gen. Robert B. Neller was briefed by human performance specialists on the high rate of lower back pain across the base. Staff told Neller the issue could be prevented with a better core stabilization exercise.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to a white paper sent to Neller, and obtained by Marine Corps Times, lower back pain was the \u201cleading\u201d musculoskeletal diagnosis \u201ctreated by all physical therapy and sports medicine clinics across Camp Lejeune\u201d between June 2017 and June 2018.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The paper, which included details of Neller\u2019s visit and a preliminary study on planks, was written following Neller\u2019s discussions with staff at the Raider human performance center.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Emilie Schmidt, a physical therapist with 3d Raider Battalion, recommended to the commandant that the Corps swap out crunches for the plank on the PFT, as evidence showed that the crunch was contributing to lower back pain.<\/p>\n\n\n\t<aside class=\"smg-interstitial-link wp-block-smg-interstitial-link\">\n\t\t<a href=\"https:\/\/one.sightlinemg.com\/marinecorpstimes\/news\/your-marine-corps\/2019\/05\/31\/top-marine-approves-planks-as-an-alternative-to-crunches\/\" class=\"smg-interstitial-link__inner\">\n\t\t\t\t\t\t<div class=\"smg-interstitial-link__content\">\n\t\t\t\t<span class=\"smg-interstitial-link__kicker\">Related<\/span>\n\t\t\t\t<h3 class=\"smg-interstitial-link__title\">Top Marine approves planks as an alternative to crunches<\/h3>\n\t\t\t\t\t\t\t\t\t<p class=\"smg-interstitial-link__excerpt\">Holding a plank for four minutes and 20 seconds will net a Marine a top score on the PFT.<\/p>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/a>\n\t<\/aside>\n\t\n\n\n<p class=\"wp-block-paragraph\">\u201cAn undisputable contributing factor to LBP [ lower back pain] is poor \u201ccore\u201d stabilization,&#8221; which can be prevented or rehabilitated by \u201cproper core conditioning,\u201d according to the paper.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The crunch has been \u201cineffective at assessing functional core strength\u201d and \u201carguably detrimental for back health,\u201d according to the paper.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cIn addition, crunch-type exercises have been shown to be contrary to proper core development, and in fact, have been demonstrated to decrease overall force production capability of the arms and legs when the body is placed in spinal flexion,&#8221; the paper reads.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cTherefore, the current PFT crunch test is not only ineffective at measuring true \u2018core\u2019 stability, endurance, or strength, it is likely contributing to the high incidence of LBP encountered in our rehabilitation clinics,\u201d the paper stated.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Staff at the Raider center conducted a preliminary study on planks and crunches that involved 240 Marines from 3d Raider and the Staff Noncommissioned Officer Academy aboard Camp Lejeune.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to the white paper, 91 percent achieved a perfect score on the crunch portion of the PFT. But, for the plank, only 13 percent achieved a max hold of 180 seconds, while 12 percent failed the test by holding the plank for less than 60 seconds.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cThis is a drastic difference compared to the 13% on the plank-hold assessment, supporting the argument that the crunch fails to accurately measure core strength,\u201d the paper reads.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Marine Corps first publicly announced it was researching planks as an alternative to crunches at the December 2018 meeting of the <a href=\"https:\/\/www.marinecorpstimes.com\/news\/your-marine-corps\/2019\/01\/05\/the-corps-is-considering-planks-as-an-alternative-to-crunches-on-the-pft\/\" target=\"_blank\">Defense Advisory Committee on Women in the Services<\/a>. The Corps\u2019 Force Fitness Division carried out its own testing and research into planks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Come Jan. 1, 2020, Marines will have the option of planks or crunches. But for a max score, Marines will need to hold a plank for four minutes and 20 seconds, not 180 seconds as used in the 3d Raider study.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The score and time chart for the plank was recently published in an <a href=\"https:\/\/www.marines.mil\/News\/Messages\/MARADMINS\/Article\/1869148\/forthcoming-change-to-the-physical-fitness-test-pft\/\" target=\"_blank\">administrative message<\/a> on June 7. According to the scoring rubric, the minimum plank hold time is 1 minute and 3 seconds, which will net a Marine forty points out of 100 point scale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An instructional video on how to perform and score the plank will be posted to the <a href=\"https:\/\/www.fitness.marines.mil\/\" target=_blank>Force Fitness Division<\/a>\u2019s website no later than Sept. 1, 2019, according to the Marine message.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Abdominal crunches may have contributed to lower back pain being the number one musculoskeletal diagnosis across Camp 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By:"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Did lower back injuries drive the commandant\u2019s decision on planks? - Marine Corps Times<\/title>\n<meta name=\"description\" content=\"Abdominal crunches may have contributed to lower back pain being the number one musculoskeletal diagnosis across Camp Lejeune.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Did lower back injuries drive the commandant\u2019s decision on planks?\" \/>\n<meta property=\"og:description\" content=\"Abdominal crunches may have contributed to lower back pain being the number one musculoskeletal diagnosis across Camp Lejeune.\" \/>\n<meta property=\"og:url\" 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