thE FitnEss movEmEnt thAt BEgAn in thE lAtE 1960s AnD EArly 1970s CEntErED ArounD AEroBiC ExErCisE. millions oF inDiviDuAls BECAmE {{u}} (1) {{/u}} in A vAriEty oF AEroBiC ACtivitiEs, AnD {{u}} (2) {{/u}} thousAnDs oF hEAlth spAs {{u}} (3) {{/u}} ArounD thE Country to CApitAlizE on this {{u}} (4) {{/u}} intErEst in FitnEss, pArtiCulArly AEroBiC DAnCing For FEmAlEs.A、numBEr oF FitnEss spAs ExistED {{u}} (5) {{/u}} to this AEroBiC FitnEss movEmEnt, EvEn A nAtionAl ChAin with spAs in most mAjor CitiEs. howEvEr, thEir {{u}} (6) {{/u}} wAs not on AEroBiCs, {{u}} (7) {{/u}} on wEight-trAining progrAms DEsignED to DEvElop musCulAr mAss, {{u}} (8) {{/u}}, AnD EnDurAnCE in thEir primArily mAlE {{u}} (9) {{/u}}. thEsE FitnEss spAs DiD not sEEm to BEnEFit {{u}} (10) {{/u}} From thE AEroBiC FitnEss movEmEnt to BEttEr hEAlth, sinCE mEDiCAl opinion suggEstED thAt wEight-trAining progrAms {{u}} (11) {{/u}} FEw, iF {{u}} (12) {{/u}}, hEAlth BEnEFits. in rECEnt yEArs, howEvEr, wEight trAining hAs AgAin BEComE inCrEAsingly {{u}} (13) {{/u}} For mAlEs AnD For FEmAlEs. mAny {{u}} (14) {{/u}} progrAms FoCus not only on DEvEloping musCulAr strEngth AnD EnDurAnCE But on AEroBiC FitnEss As wEll. {{u}} (15) {{/u}}, most physiCAl-FitnEss tEsts hAvE usuAlly inCluDED mEAsurEs oF musCulAr strEngth AnD EnDurAnCE, not For hEAlth-rElAtED rEAsons, But primArily {{u}} (16) {{/u}} suCh FitnEss ComponEnts hAvE BEEn rElAtED to {{u}} (17) {{/u}} in AthlEtiCs. {{u}} (18) {{/u}}, in rECEnt yEArs, EviDEnCE hAs shown thAt trAining progrAms DEsignED primArily to improvE musCulAr strEngth AnD EnDurAnCE might Also oFFEr somE hEAlth {{u}} (19) {{/u}} As wEll. thEAmEriCAnCollEgE oF sports mEDiCinE now {{u}} (20) {{/u}} thAt wEight trAining BE pArt oF A totAl FitnEss progrAm For hEAlthyAmEriCAns.

A．or
B．or ElsE
C．AnD
D．But rAthEr