CHANGING HAND POSITIONS ALTERS LOWER EXTREMITY BIOMECHANICS DURING LANDING
Background During gameplay, athletes frequently change their trunk and hand placement positions (e.g. ball handling). Changing trunk positions alters lower extremity (LE) biomechanics and subsequent injury risk during sport. However, whether changing hand positions also alters LE biomechanics during...
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| Veröffentlicht in: | British journal of sports medicine 2014-04, Vol.48 (7), p.561-561 |
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| creator | Ambegaonkar, J Oladipo, E Caswell, SV Shimokochi, Y Cortes, N |
| description | Background During gameplay, athletes frequently change their trunk and hand placement positions (e.g. ball handling). Changing trunk positions alters lower extremity (LE) biomechanics and subsequent injury risk during sport. However, whether changing hand positions also alters LE biomechanics during landing (a high LE injury-risk activity) is unclear. Objective To examine if changing hand positions during landing affects LE biomechanics. Design Repeated measures. Setting Laboratory. Participants 30 healthy participants (23.4±4.3 years, 170.7±7.7 cm, 70.2±18.9 kg). Interventions Participants performed 5 landings from a 45cm box in 4 different hand placement (HP) conditions: 1) Holding a basketball at chest level (CH), 2) Holding a basketball at chest with arms straight in front (FR), 3) Holding a basketball straight up over head (UP), and 4) Placing hands on hips (HIP). Main outcome measurements Sagittal hip, knee, ankle angles (°) from initial touchdown to lowest point of the vertical Center of Mass (COM min) displacement were assessed using 3-D motion analyses. Repeated measures ANOVAs and Bonferroni pairwise comparisons examined differences across HP conditions. Results At touchdown, participants had differing hip (P |
| doi_str_mv | 10.1136/bjsports-2014-093494.5 |
| format | Article |
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Changing trunk positions alters lower extremity (LE) biomechanics and subsequent injury risk during sport. However, whether changing hand positions also alters LE biomechanics during landing (a high LE injury-risk activity) is unclear. Objective To examine if changing hand positions during landing affects LE biomechanics. Design Repeated measures. Setting Laboratory. Participants 30 healthy participants (23.4±4.3 years, 170.7±7.7 cm, 70.2±18.9 kg). Interventions Participants performed 5 landings from a 45cm box in 4 different hand placement (HP) conditions: 1) Holding a basketball at chest level (CH), 2) Holding a basketball at chest with arms straight in front (FR), 3) Holding a basketball straight up over head (UP), and 4) Placing hands on hips (HIP). Main outcome measurements Sagittal hip, knee, ankle angles (°) from initial touchdown to lowest point of the vertical Center of Mass (COM min) displacement were assessed using 3-D motion analyses. Repeated measures ANOVAs and Bonferroni pairwise comparisons examined differences across HP conditions. Results At touchdown, participants had differing hip (P<.001), but not knee (P=.09), or ankle (P=.22) flexion angles across conditions. At COMmin, participants had differing hip (P=.01), knee (P=<.001), and ankle (P<.001)angles across conditions, resulting in differing hip (P=.01)and knee (P<.001) but similar ankle (P=.06) flexion excursions across conditions. Specifically, participants had lower hip excursions in UP than in FR (P=.03) and HIP (P=.009), and lower knee excursions in CH than in FR (P=.02), UP (P=.003), and UP (P<.001). Conclusions Overall, when landing with hands up or across the chest, participants landed in an extended posture and with decreased range of motion. Conversely, when landing with hands in front, participants had increased joint flexion angles associated with an increased range of motion. Changing hand placements during landing may alter LE biomechanics, and influence subsequent injury risk during landing. Clinicians should incorporate exercises that include hand position changes when designing injury prevention programs to decrease LE injury risk.</description><identifier>ISSN: 0306-3674</identifier><identifier>EISSN: 1473-0480</identifier><identifier>DOI: 10.1136/bjsports-2014-093494.5</identifier><language>eng</language><publisher>London: BMJ Publishing Group</publisher><subject>Accident prevention ; Ankle ; Basketball ; Biomechanics ; Hands ; Range of motion ; Risk factors ; Sports injuries ; Sports medicine</subject><ispartof>British journal of sports medicine, 2014-04, Vol.48 (7), p.561-561</ispartof><rights>Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions</rights><rights>Copyright BMJ Publishing Group Apr 2014</rights><rights>Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions2014</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b2311-2bf4d558c9ed2759755a935330d7ca9d4cd1ed598d83dab6727fb0ebe339fb283</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttp://bjsm.bmj.com/content/48/7/561.2.full.pdf$$EPDF$$P50$$Gbmj$$H</linktopdf><linktohtml>$$Uhttp://bjsm.bmj.com/content/48/7/561.2.full$$EHTML$$P50$$Gbmj$$H</linktohtml><link.rule.ids>114,115,314,780,784,3196,23571,27924,27925,77600,77631</link.rule.ids></links><search><creatorcontrib>Ambegaonkar, J</creatorcontrib><creatorcontrib>Oladipo, E</creatorcontrib><creatorcontrib>Caswell, SV</creatorcontrib><creatorcontrib>Shimokochi, Y</creatorcontrib><creatorcontrib>Cortes, N</creatorcontrib><title>CHANGING HAND POSITIONS ALTERS LOWER EXTREMITY BIOMECHANICS DURING LANDING</title><title>British journal of sports medicine</title><description>Background During gameplay, athletes frequently change their trunk and hand placement positions (e.g. ball handling). Changing trunk positions alters lower extremity (LE) biomechanics and subsequent injury risk during sport. However, whether changing hand positions also alters LE biomechanics during landing (a high LE injury-risk activity) is unclear. Objective To examine if changing hand positions during landing affects LE biomechanics. Design Repeated measures. Setting Laboratory. Participants 30 healthy participants (23.4±4.3 years, 170.7±7.7 cm, 70.2±18.9 kg). Interventions Participants performed 5 landings from a 45cm box in 4 different hand placement (HP) conditions: 1) Holding a basketball at chest level (CH), 2) Holding a basketball at chest with arms straight in front (FR), 3) Holding a basketball straight up over head (UP), and 4) Placing hands on hips (HIP). Main outcome measurements Sagittal hip, knee, ankle angles (°) from initial touchdown to lowest point of the vertical Center of Mass (COM min) displacement were assessed using 3-D motion analyses. Repeated measures ANOVAs and Bonferroni pairwise comparisons examined differences across HP conditions. Results At touchdown, participants had differing hip (P<.001), but not knee (P=.09), or ankle (P=.22) flexion angles across conditions. At COMmin, participants had differing hip (P=.01), knee (P=<.001), and ankle (P<.001)angles across conditions, resulting in differing hip (P=.01)and knee (P<.001) but similar ankle (P=.06) flexion excursions across conditions. Specifically, participants had lower hip excursions in UP than in FR (P=.03) and HIP (P=.009), and lower knee excursions in CH than in FR (P=.02), UP (P=.003), and UP (P<.001). Conclusions Overall, when landing with hands up or across the chest, participants landed in an extended posture and with decreased range of motion. Conversely, when landing with hands in front, participants had increased joint flexion angles associated with an increased range of motion. Changing hand placements during landing may alter LE biomechanics, and influence subsequent injury risk during landing. Clinicians should incorporate exercises that include hand position changes when designing injury prevention programs to decrease LE injury risk.</description><subject>Accident prevention</subject><subject>Ankle</subject><subject>Basketball</subject><subject>Biomechanics</subject><subject>Hands</subject><subject>Range of motion</subject><subject>Risk factors</subject><subject>Sports injuries</subject><subject>Sports medicine</subject><issn>0306-3674</issn><issn>1473-0480</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqNkUFPgzAYhhujiXP6FwyJFy_MfrSl9DgZbhg2DLCop4ZCSUa2Mel28N8LQS8ejKf38jzv9yUvQreAJwDEfVC1OTTt0dgOBmpjQaigE3aGRkA5sTH18DkaYYJdm7icXqIrY2qMwWHYG6FnfzFdzcPV3OpyZr3EaZiF8Sq1plEWJKkVxa9BYgVvWRIsw-zdegzjZdA7oZ9as3XSm1FndnmNLqp8a_TNd47R-inI_IUdxfPQn0a2cgiA7aiKlox5hdClw5ngjOWCMEJwyYtclLQoQZdMeKVHyly53OGVwlppQkSlHI-M0f3Qe2ibj5M2R7nbmEJvt_leNycjgYHLiSAYOvTuF1o3p3bffSeB8-4q5y77k2JYYAAqeEe5A1W0jTGtruSh3ezy9lMClv0Q8mcI2Q8hhyFkXw-DqHb1f50vPo-Fsg</recordid><startdate>201404</startdate><enddate>201404</enddate><creator>Ambegaonkar, J</creator><creator>Oladipo, E</creator><creator>Caswell, SV</creator><creator>Shimokochi, Y</creator><creator>Cortes, N</creator><general>BMJ Publishing Group</general><general>BMJ Publishing Group LTD</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TS</scope><scope>3V.</scope><scope>7RV</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>88I</scope><scope>8AF</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BTHHO</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>M0S</scope><scope>M1P</scope><scope>M2O</scope><scope>M2P</scope><scope>MBDVC</scope><scope>NAPCQ</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope></search><sort><creationdate>201404</creationdate><title>CHANGING HAND POSITIONS ALTERS LOWER EXTREMITY BIOMECHANICS DURING LANDING</title><author>Ambegaonkar, J ; Oladipo, E ; Caswell, SV ; Shimokochi, Y ; Cortes, N</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-b2311-2bf4d558c9ed2759755a935330d7ca9d4cd1ed598d83dab6727fb0ebe339fb283</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Accident prevention</topic><topic>Ankle</topic><topic>Basketball</topic><topic>Biomechanics</topic><topic>Hands</topic><topic>Range of motion</topic><topic>Risk factors</topic><topic>Sports injuries</topic><topic>Sports medicine</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ambegaonkar, J</creatorcontrib><creatorcontrib>Oladipo, E</creatorcontrib><creatorcontrib>Caswell, SV</creatorcontrib><creatorcontrib>Shimokochi, Y</creatorcontrib><creatorcontrib>Cortes, N</creatorcontrib><collection>CrossRef</collection><collection>Physical Education Index</collection><collection>ProQuest Central (Corporate)</collection><collection>Nursing & Allied Health Database</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>BMJ Journals</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Research Library (Corporate)</collection><collection>Nursing & Allied Health Premium</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>ProQuest Central Basic</collection><jtitle>British journal of sports medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ambegaonkar, J</au><au>Oladipo, E</au><au>Caswell, SV</au><au>Shimokochi, Y</au><au>Cortes, N</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>CHANGING HAND POSITIONS ALTERS LOWER EXTREMITY BIOMECHANICS DURING LANDING</atitle><jtitle>British journal of sports medicine</jtitle><date>2014-04</date><risdate>2014</risdate><volume>48</volume><issue>7</issue><spage>561</spage><epage>561</epage><pages>561-561</pages><issn>0306-3674</issn><eissn>1473-0480</eissn><abstract>Background During gameplay, athletes frequently change their trunk and hand placement positions (e.g. ball handling). Changing trunk positions alters lower extremity (LE) biomechanics and subsequent injury risk during sport. However, whether changing hand positions also alters LE biomechanics during landing (a high LE injury-risk activity) is unclear. Objective To examine if changing hand positions during landing affects LE biomechanics. Design Repeated measures. Setting Laboratory. Participants 30 healthy participants (23.4±4.3 years, 170.7±7.7 cm, 70.2±18.9 kg). Interventions Participants performed 5 landings from a 45cm box in 4 different hand placement (HP) conditions: 1) Holding a basketball at chest level (CH), 2) Holding a basketball at chest with arms straight in front (FR), 3) Holding a basketball straight up over head (UP), and 4) Placing hands on hips (HIP). Main outcome measurements Sagittal hip, knee, ankle angles (°) from initial touchdown to lowest point of the vertical Center of Mass (COM min) displacement were assessed using 3-D motion analyses. Repeated measures ANOVAs and Bonferroni pairwise comparisons examined differences across HP conditions. Results At touchdown, participants had differing hip (P<.001), but not knee (P=.09), or ankle (P=.22) flexion angles across conditions. At COMmin, participants had differing hip (P=.01), knee (P=<.001), and ankle (P<.001)angles across conditions, resulting in differing hip (P=.01)and knee (P<.001) but similar ankle (P=.06) flexion excursions across conditions. Specifically, participants had lower hip excursions in UP than in FR (P=.03) and HIP (P=.009), and lower knee excursions in CH than in FR (P=.02), UP (P=.003), and UP (P<.001). Conclusions Overall, when landing with hands up or across the chest, participants landed in an extended posture and with decreased range of motion. Conversely, when landing with hands in front, participants had increased joint flexion angles associated with an increased range of motion. Changing hand placements during landing may alter LE biomechanics, and influence subsequent injury risk during landing. Clinicians should incorporate exercises that include hand position changes when designing injury prevention programs to decrease LE injury risk.</abstract><cop>London</cop><pub>BMJ Publishing Group</pub><doi>10.1136/bjsports-2014-093494.5</doi><tpages>1</tpages></addata></record> |
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| source | BMJ Journals - NESLi2 |
| subjects | Accident prevention Ankle Basketball Biomechanics Hands Range of motion Risk factors Sports injuries Sports medicine |
| title | CHANGING HAND POSITIONS ALTERS LOWER EXTREMITY BIOMECHANICS DURING LANDING |
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