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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Psychol Sport Exerc. 2016 Dec 5;31:139–148. doi: 10.1016/j.psychsport.2016.12.001

Table 4.

Twin correlations (95% CI) and standardized estimates (95% CI) of additive (A) genetic influences, dominant (D) genetic influences or shared environmental (C), and unique environmental (E) influences on the Feeling Scale and RPE responses and AD ACL subscales Energy, Calmness, Tiredness and Tension

rMZ rDZ/sibling ACE/ADE model Best fitting

A C D E

Cycle ergometer Exercise FS .20 (.02, .36) .01 (−.15, .16) .00 (.00, .29) .19 (.00, .35) .81 (.65, .98) A = .15 (.00, .31) E = .85 (.69, 1)
RPE .25 (.06, .43) .20 (.04, .34) .08 (.00, .41) .17 (.00, .34) .75 (.59, .89) A = .29 (.13, .43) E = .71 (.57, .87)
Recovery Energy .35 (.17, .50) .24 (.09, .38) .25 (.00, .50) .10 (.00, .36) .65 (.50, .82) A = .37 (.23, .51) E = .63 (.49, .78)
Calmness .24 (.05, .40) .03 (−.11, .18) .00 (.00, .32) .22 (.00, .38) .78 (.62, .95) A = .19 (.02, .34) E = .81 (.66, .98)
Tiredness .10 (−.10, .29) −.02 (−.17, .13) .00 (.00, .23) .09 (.00, .27) .91 (.73, 1) E = 1
Tension .26 (.08, .41) .10 (−.05, .25) .31 (.00, .38) .09 (.00, .41) .75 (.59, .91) A = .24 (.08, .38) E = .76 (.62, .92)

Treadmill Exercise FS .23 (.07, .38) .14 (−.01, .29) .12 (.00, .38) .11 (.00, .30) .77 (.62, .92) C = .19 (.08, .30) E = .81 (.70, .92)
RPE .33 (.20, .48) .20 (.05, .34) .23 (.00, .47) .10 (.00, .36) .67 (.53, .83) A = .35 (.20, .48) E = .65 (.52, .80)
Recovery Energy .23 (.04, .40) .23 (.09, .36) .01 (.00, .39) .21 (.00, .33) .78 (.61, .90) C = .22 (.10, .33) E = .78 (.67, .90)
Calmness .21 (.04, .34) .09 (−.06, .24) .16 (.00, .35) .05 (.00, .37) .79 (.63, .94) A= .21 (.05, .35) E = .79 (.65, .95)
Tiredness .11 (−.07, .27) .13 (−.02, .27) .00 (.00, .28) .13 (.00, .24) .87 (.72, .99) E = 1
Tension .17 (−.02 .34) .03 (−.17, .12) .00 (.00, .25) .13 (.00, .30) .87 (.70, 1) E = 1

Maximal Exercise Recovery Energy .39 (.24 .52) .07 (−.09, .22) .06 (.00, .48) .33 (.00, .52) .61 (.48, .76) A = .37 (.22, .49) E = .63 (.51, .78)
Calmness .38 (.23, .51) .14 (−.03, .29) .11 (.00, .48) .27 (.00, .51) .62 (.49, .78) A = .36 (.21, .49) E = .64 (.51, .79)
Tiredness .33 (.15, .48) .16 (.01, .30) .32 (.00, .46) .00 (.00, .44) .68 (.54, .83) A = .32 (.17, .46) E = .68 (.54, .83)
Tension .09 (−.10 .27) .11 (−05, .27) .00 (.00, .27) .11 (.00, .23) .89 (.73, 1) E = 1