population ageing is a global phenomenon . in the mid-21st century , the number of older persons was 202 million which consisted of 8% in the whole population , but it reached about 841 million which is 4 times higher than that in 1950 .
fukuoka et al . ( 2016 ) predicted that the number of the older persons will triple by 2,050 to attain 2 billion , reaching 21% of world population .
south korea is one of the great examples of the phenomenon . this country has shown the fastest growing rate of the ageing population in the world .
for instance , while other advanced countries such as france , the united states , and japan have taken 115 yr , 73 yr and 24 yr , respectively , korea has taken 18 yr to enter the aged society ( ahn et al . , 2014 ) .
in addition , the proportion of population who are over 65 yr in korea will be reached to be nearly 37% by 2050 ( choi et al . , 2016 ) .
the dramatic increase of the numbers of older persons in the population of korea has brought about a variety of social issues such as physical and mental health , social relationship , and financial problem . of those issues ,
most elderly people face various and serious health problems which can hugely affect their lives ( spar and la rue , 2002 ) .
indeed , health problems in the elderly can cause enormous economic damage at the level of the government and can lead to the huge losses of their autonomy and independence at the level of the individual .
therefore , health is the most important issue not only for the elderly , but for the government .
campos ( 2011 ) argues that  it is difficult to define or discuss health without mention of wellness because the two terms are closely interwoven .  in the words , the definition of health includes wellness which implies a sense of welling in all aspects of life .
( 2006 ) define wellness as : a lifelong process that at any given time produces a positive state of personal well - being , of feeling good about yourself ; of optimal physical , psychological , and social functioning ; and the control and minimization of both internal and external risk factors for both diseases and negative health conditions .
it suggests that what you believe , feel and do have an influence on your health . in the same vein ,
hoeger and hoeger ( 2007 ) assert that  wellness implies a constant and deliberate effort to stay healthy and achieve the highest potential for well - being .
 based on both definitions , kim ( 2000 ) classifies wellness into five dimensions : ( a ) physical wellness can be defined as the ability to carry out daily tasks through physical activity and proper nutrition ; ( b ) social wellness can be the ability to build healthy , nurturing and supportive relationships and to foster a strong connection with others ; ( c ) spiritual wellness can be characterized as a guiding sense of meaning or value in life ; ( d ) intellectual wellness can be the ability to learn knowledge and skills and apply them to daily tasks ; and ( e ) emotional wellness can be defined as the ability to handle emotions and express them appropriately and comfortably .
the improvement of wellness for the elderly may play an important role in increasing overall quality of life ( liao and brunner , 2016 ) . for the elderly , however , aging may lead to gradual loss of physical , mental , social and intellectual functions and in turn
sport and physical activity has been recognized as an important agent in improving wellness in the elderly ( kim and lee , 2011 ; stephenson et al . , 2007 ) .
considering the positive effects of physical activities in wellness for the elderly , in this study researcher introduces a new form of exercise known as pilates developed by joseph pilates in the early 20th century that contributes to improving the balance , muscle strength and coordination .
pilates emphasizes the mind - body connection and it is also getting popular in korea .
moreover , it is not necessary to have the open space to practice it ( mokhtari et al .
the exercise can be performed on a mat or with equipments such as the reformer , cadillac , and chair ( roh , 2015 ) . to date , previous research has focused on its positive role for youth and adults ( cromwell et al . , 2007 ; johnson et al . , 2007 ) .
however , there has been little research on how a pilates exercise affects on the elderly s wellness .
therefore , the purpose of this study is to examine the effect of a 12-week pilates intervention on wellness of the elderly .
the participants of this research were sampled from the elderly ( aging over 65 yr old ) who participated in continuing education centers located in incheon metropolitan city .
researcher explained the purpose of the study and 93 elderly agreed to participate in pilates exercise in the beginning of this study , but 5 participants dropped out due to personal reasons such as health issue ( 4 ) and the lack of time ( 1 ) . as a result ,
a total of 88 participants ( 63 females : 68.574.43 yr , 26 males : 68.84.69 yr ) completed a 12-week pilates intervention for this research .
all participants received a pilates exercise training , 3 sessions of 50 min per week for a duration of 12 weeks .
pilates exercises which were used in this study were based on the programs that were used in previous studies ( kaesler et al .
the exercises were performed into two parts . for the first six weeks , pilates on the mats was performed and the second part was performed with bands for the rest six weeks .
this questionnaire was composed of 23 items ; 4 items in background information and 19 items in wellness .
before and after performing the exercises , all participants completed a questionnaire to measure the efficiency of pilates exercises on wellness .
wellness scale was developed by kim ( 2000 ) with 19 questions consisted of five subvariables such as physical ( 5 items ) , social ( 4 items ) , spiritual ( 3 items ) , intellectual ( 3 items ) , and emotional wellness ( 4 items ) .
the responses to all items were made by the likert scale with 1 point in  not at all  and 5 point in  strongly agree  . to test the validity of the questionnaire ,
a meeting of a panel of experts was held with 3 professors in a realm of socio - psychology .
a principle component analysis was conducted to minimize the number of factors and varimax rotation was used as a rotation method .
the reliability coefficient ranged from 0.708 to 0.847 which was judged to be very reliable .
20.0 ( ibm co. , armonk , ny , usa ) was used to analyze all data collected in this study .
first , an exploratory factor analysis and a reliability analysis were conducted to verify the validity and reliability of the questionnaire .
second , the paired t - test was conducted to verify the difference between pre- and posttest . the significance level of (  )
the participants of this research were sampled from the elderly ( aging over 65 yr old ) who participated in continuing education centers located in incheon metropolitan city .
researcher explained the purpose of the study and 93 elderly agreed to participate in pilates exercise in the beginning of this study , but 5 participants dropped out due to personal reasons such as health issue ( 4 ) and the lack of time ( 1 ) . as a result ,
a total of 88 participants ( 63 females : 68.574.43 yr , 26 males : 68.84.69 yr ) completed a 12-week pilates intervention for this research .
all participants received a pilates exercise training , 3 sessions of 50 min per week for a duration of 12 weeks .
pilates exercises which were used in this study were based on the programs that were used in previous studies ( kaesler et al .
for the first six weeks , pilates on the mats was performed and the second part was performed with bands for the rest six weeks .
this questionnaire was composed of 23 items ; 4 items in background information and 19 items in wellness .
before and after performing the exercises , all participants completed a questionnaire to measure the efficiency of pilates exercises on wellness .
wellness scale was developed by kim ( 2000 ) with 19 questions consisted of five subvariables such as physical ( 5 items ) , social ( 4 items ) , spiritual ( 3 items ) , intellectual ( 3 items ) , and emotional wellness ( 4 items ) .
the responses to all items were made by the likert scale with 1 point in  not at all  and 5 point in  strongly agree  . to test the validity of the questionnaire ,
a meeting of a panel of experts was held with 3 professors in a realm of socio - psychology .
a principle component analysis was conducted to minimize the number of factors and varimax rotation was used as a rotation method . a reliability coefficient which represents internal consistency
the reliability coefficient ranged from 0.708 to 0.847 which was judged to be very reliable .
20.0 ( ibm co. , armonk , ny , usa ) was used to analyze all data collected in this study .
first , an exploratory factor analysis and a reliability analysis were conducted to verify the validity and reliability of the questionnaire .
second , the paired t - test was conducted to verify the difference between pre- and posttest . the significance level of (  )
the collected data went through descriptive statistics such as mean and standard deviation and paired t - test was used to determine whether the mean difference between pre- and posttest .
there were statistically significant differences in physical ( t=2.762 , p<0.01 ) , social ( t=3.362 , p<0.001 ) , spiritual ( t=2.307 , p<0.05 ) and emotional wellness ( t=2.489 , p<0.05 ) for the elderly between pre- and post - pilates intervention .
this research examined the effect of a 12-week pilates exercise on wellness in elderly women .
findings of the study revealed that pilates exercises might be a useful tool for helping older persons to improve various dimensions of wellness . in other words , pilates exercisesprogram for 12 weeks significantly improved elderly s wellness such as physical , social , spiritual and emotional wellness . after reviewing the literature
, it was found that the pilates exercise contributes to improving physical wellness in the elderly ( hall et al . , 1999 ;
( 2015 ) , which studied on the effects of pilates exercise training on physical fitness and welling in the elderly , argue that pilates exercise can be considered a proper physical activity for the elderly .
consequently , this exercise increases physical fitness and in turn it improves overall quality of life .
previous studies also have shown that pilates exercise reinforces emotional wellness in older persons ( siqueira rodrigues et al . , 2010 ) .
2015 ) investigated the effect of 12-week pilates exercises of older adults who completed for duration of 12 weeks .
the results revealed that pilates exercises improve aspects of the health - related quality of life of older adults .
in addition , kim and lee ( 2011 ) investigated the effect of leisure sports on wellness in the elderly .
older persons who spent more time in active exercises build a better relationship with others and have interpersonal relation skills . the more they participated in physical activities , the more they are socially healthy . in this study
, therefore , pilates exercises may play an important role in improving overall wellness in the elderly and in turn it may affects older persons overall health and wellbeing .
this research focuses primarily on the effect of a 12-week pilates intervention on wellness in the elderly . in other words ,
therefore , future research should be designed with a control group such as other exercise group or nonexercise group .
 the purpose of this study is to examine the efficiency of 12-week pilates exercises on wellness in the elderly . 
 before pilates exercises training , the 88 elderly ( 63 females , 25 males ) were given and completed a wellness scale . 
 then , the elderly participated in pilates exercises and completed the same scale afterwards . results of paired t - test showed that participants in 12-week pilates exercises experienced significant improvement in physical ( t=2.762 , p<0.01 ) , social ( t=3.362 , p<0.001 ) , spiritual ( t=2.307 , p<0.05 ) , and emotional wellness ( t=2.489 , p<0.05 ) . 
 consequently , pilates exercises helped improve wellness of the elderly . 