{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T00:51:39Z","timestamp":1777855899792,"version":"3.51.4"},"reference-count":46,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2019,5,1]],"date-time":"2019-05-01T00:00:00Z","timestamp":1556668800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Am J Mens Health"],"published-print":{"date-parts":[[2019,5]]},"abstract":"<jats:p>\n                    The aim of this study was to evaluate the effect of long-term running training on muscle strength of men aged 50 and above. The study involved two groups of men aged 50 and above: physically active (E, n = 34) and inactive (NE, n = 20). Body composition was assessed with the electrical bioimpedance method. The isometric maximum voluntary contraction (MVC) was the main measurement. The value of muscle torque achieved by a group of synergists (operating in the given joint) during a short isometric contraction was evaluated. Ten groups of flexor and extensor muscles of the elbow, shoulder, hip, knee, and torso joints were measured. In addition, a 3 s measurement of grip strength of the right (F\n                    <jats:sub>r<\/jats:sub>\n                    ) and left (F\n                    <jats:sub>l<\/jats:sub>\n                    ) hand was taken using a hand dynamometer. The obtained values enabled to calculate the symmetry index (SI).\n                  <\/jats:p>\n                  <jats:p>Men who had been running regularly were characterized by a significantly lower strength level ( p &lt; .05). Results in the NE group were determined to a great extent by significantly different body weights ( p &lt; .001) and a significantly higher body fat mass (FAT) content ( p &lt; .001). SI was statistically higher in the reference group ( p &lt; .05).<\/jats:p>\n                  <jats:p>Long-distance run training reduces FAT while maintaining a high level of muscle strength. These studies indirectly confirm the effect of strengthening slow-twitch motor units in men aged 50 (Doherty &amp; Brown 1993; Kanda &amp; Hashizume 1989). In addition, stimulating the body through physical effort helps it also to maintain a high level of strength symmetry, which is a preventive factor in reducing the number of injuries.<\/jats:p>","DOI":"10.1177\/1557988319859108","type":"journal-article","created":{"date-parts":[[2019,6,21]],"date-time":"2019-06-21T01:43:41Z","timestamp":1561081421000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Strength Abilities in Men 50+ as an Effect of Long-Distance Run Training"],"prefix":"10.1177","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6037-5144","authenticated-orcid":false,"given":"Dagmara","family":"Iwa\u0144ska","sequence":"first","affiliation":[{"name":"J\u00f3zef Pi\u0142sudski University of Physical Education, Faculty of Physical Education, Department of Anatomy and Biomechanics, Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna","family":"Mr\u00f3z","sequence":"additional","affiliation":[{"name":"J\u00f3zef Pi\u0142sudski University of Physical Education, Faculty of Physical Education, Department of Physiology and Sports Medicine, Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Agnieszka","family":"W\u00f3jcik","sequence":"additional","affiliation":[{"name":"J\u00f3zef Pi\u0142sudski University of Physical Education, Faculty of Physiotherapy, Department of Physiotherapy, Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katarzyna","family":"Witek","sequence":"additional","affiliation":[{"name":"J\u00f3zef Pi\u0142sudski University of Physical Education, Faculty of Physical Education, Department of Physiology, Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna","family":"Czajkowska","sequence":"additional","affiliation":[{"name":"J\u00f3zef Pi\u0142sudski University of Physical Education, Faculty of Tourism and Recreation, Department of Recreation, Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ma\u0142gorzata","family":"Kusztelak","sequence":"additional","affiliation":[{"name":"Mazovian Rehabilitation Center \u201cSTOCER,\u201d Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2019,6,20]]},"reference":[{"key":"bibr1-1557988319859108","volume-title":"Strength and speed characteristics of selected muscle groups and the level of anaerobic capacity in men form different age","author":"Adach Z.","year":"2002"},{"key":"bibr2-1557988319859108","first-page":"1150","volume":"27","author":"Allen M. 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