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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934
                               (AMENDMENT NO. 21)*

                     BALLY TOTAL FITNESS HOLDING CORPORATION
                                (Name of Issuer)

                     COMMON STOCK, PAR VALUE $0.01 PER SHARE
                         (Title of Class of Securities)

                                    05873K108
                                 (CUSIP Number)

                 MR. JOSEPH R. THORNTON, CHIEF OPERATING OFFICER
                         PARDUS CAPITAL MANAGEMENT L.P.
                           1001 AVENUE OF THE AMERICAS
                                   SUITE 1100
                               NEW YORK, NY 10018
                                 (212) 719-7550

                     (Name, Address and Telephone Number of
                      Person Authorized to Receive Notices
                               and Communications)

                                 with a copy to

                             JEFFREY D. MARELL, ESQ.
                              CARL L. REISNER, ESQ.
                  PAUL, WEISS, RIFKIND, WHARTON & GARRISON LLP
                           1285 AVENUE OF THE AMERICAS
                          NEW YORK, NEW YORK 10019-6064

                                AUGUST 24, 2006
                     (Date of Event which Requires Filing of
                                 this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the  acquisition  which is the subject to this Schedule 13D, and is filing this
schedule  because of Rule 13d-1(e),  13d-1(f) or 13d-1(g),  check the following
box [_].

Note:  Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Section 240.13d-7 for other
parties to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting  person's
initial  filing on this form with respect to the subject  class of  securities,
and for any  subsequent  amendment  containing  information  which  would alter
disclosures provided in a prior cover page.

The  information  required  on the  remainder  of this  cover page shall not be
deemed to be "filed" for the purposes of Section 18 of the Securities  Exchange
Act of 1934 ("Act") or otherwise  subject to the liabilities of that section of
the Act but shall be subject to all other  provisions of the Act (however,  see
the Notes.)



CUSIP NO.  05873K108                                              PAGE 2 OF 8

                                  SCHEDULE 13D

--------------------------------------------------------------------------------
1        NAME OF REPORTING PERSON

         Pardus European Special Opportunities Master Fund L.P.
--------------------------------------------------------------------------------
2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

         (a)  [_]  Not
         (b)  [X]  Applicable
--------------------------------------------------------------------------------
3        SEC USE ONLY


--------------------------------------------------------------------------------
4        SOURCE OF FUNDS

         WC
--------------------------------------------------------------------------------
5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(D) OR 2(E)

              [_]  Not Applicable
--------------------------------------------------------------------------------
6        CITIZENSHIP OR PLACE OR ORGANIZATION

         United States
--------------------------------------------------------------------------------
                                              7     SOLE VOTING POWER
                                                    6,105,500*
                 NUMBER OF                   -----------------------------------
                   SHARES                     8     SHARED VOTING POWER
                BENEFICIALLY                        -0-
                  OWNED BY                   -----------------------------------
                    EACH                      9     SOLE DISPOSITIVE POWER
                 REPORTING                          6,105,500*
                   PERSON                    -----------------------------------
                    WITH                      10    SHARED DISPOSITIVE POWER
                                                    -0-
--------------------------------------------------------------------------------
11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         6,105,500*
--------------------------------------------------------------------------------
12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

              [_]  Not Applicable
--------------------------------------------------------------------------------
13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         14.8%*
--------------------------------------------------------------------------------
14       TYPE OF REPORTING PERSON

         PN
--------------------------------------------------------------------------------

----------
* Pardus European Special Opportunities Master Fund L.P., a limited partnership
formed under the laws of the Cayman  Islands (the  "Fund"),  is the  beneficial
owner of 6,105,500  shares of the common stock,  par value $0.01 per share (the
"Shares"),  of Bally Total Fitness Holding Corporation,  a Delaware corporation
(the "Company"). Pardus Capital Management L.P., a Delaware limited partnership
("PCM"),  serves as the investment manager of the Fund and possesses sole power
to vote and  direct the  disposition  of all  Shares  held by the Fund.  Pardus
Capital  Management LLC, a Delaware limited  liability  company ("PCM LLC"), as
the general partner of PCM, and Mr. Karim Samii, as the sole member of PCM LLC,
may be  deemed to be the  beneficial  owners  of all  Shares  held by the Fund;
however, PCM LLC and Mr. Samii disclaim beneficial ownership of all Shares held
by the Fund. Based on information  provided by the Company,  as of May 31, 2006
there  were  41,310,827  shares  of  the  Company's  common  stock  issued  and
outstanding. Thus, for the purposes of Reg. Section 240.13d-3, the Fund and PCM
are deemed to  beneficially  own, and PCM LLC and Mr. Karim Samii may be deemed
to beneficially own, 6,105,500 Shares, or approximately 14.8% of the issued and
outstanding Shares.



CUSIP NO.  05873K108                                              PAGE 3 OF 8

                                  SCHEDULE 13D

--------------------------------------------------------------------------------
1        NAME OF REPORTING PERSON

         Pardus Capital Management L.P.
--------------------------------------------------------------------------------
2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

         (a)  [_]  Not
         (b)  [X]  Applicable
--------------------------------------------------------------------------------
3        SEC USE ONLY


--------------------------------------------------------------------------------
4        SOURCE OF FUNDS

         WC
--------------------------------------------------------------------------------
5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(D) OR 2(E)

              [_]  Not Applicable
--------------------------------------------------------------------------------
6        CITIZENSHIP OR PLACE OR ORGANIZATION

         United States
--------------------------------------------------------------------------------
                                              7     SOLE VOTING POWER
                                                    6,105,500*
                 NUMBER OF                   -----------------------------------
                   SHARES                     8     SHARED VOTING POWER
                BENEFICIALLY                        -0-
                  OWNED BY                   -----------------------------------
                    EACH                      9     SOLE DISPOSITIVE POWER
                 REPORTING                          6,105,500*
                   PERSON                    -----------------------------------
                    WITH                      10    SHARED DISPOSITIVE POWER
                                                    -0-
--------------------------------------------------------------------------------
11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         6,105,500*
--------------------------------------------------------------------------------
12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

              [_]  Not Applicable
--------------------------------------------------------------------------------
13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         14.8%*
--------------------------------------------------------------------------------
14       TYPE OF REPORTING PERSON

         IA
--------------------------------------------------------------------------------

----------
* The Fund is the  beneficial  owner of 6,105,500  Shares of the  Company.  PCM
serves as the  investment  manager of the Fund and possesses sole power to vote
and direct the  disposition  of all Shares  held by the Fund.  PCM LLC,  as the
general  partner of PCM, and Mr. Karim Samii, as the sole member of PCM LLC may
be deemed to be the beneficial owners of all Shares held by the Fund;  however,
PCM LLC, and Mr. Samii disclaim beneficial  ownership of all Shares held by the
Fund.  Based on information  provided by the Company,  as of May 31, 2006 there
were 41,310,827  shares of the Company's  common stock issued and  outstanding.
Thus, for the purposes of Reg. Section  240.13d-3,  the Fund and PCM are deemed
to  beneficially  own,  and PCM  LLC  and Mr.  Karim  Samii  may be  deemed  to
beneficially own,  6,105,500  Shares, or approximately  14.8% of the issued and
outstanding Shares.



CUSIP NO.  05873K108                                              PAGE 4 OF 8

                                  SCHEDULE 13D

--------------------------------------------------------------------------------
1        NAME OF REPORTING PERSON

         Pardus Capital Management LLC
--------------------------------------------------------------------------------
2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

         (a)  [_]  Not
         (b)  [X]  Applicable
--------------------------------------------------------------------------------
3        SEC USE ONLY


--------------------------------------------------------------------------------
4        SOURCE OF FUNDS

         WC
--------------------------------------------------------------------------------
5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(D) OR 2(E)

              [_]  Not Applicable
--------------------------------------------------------------------------------
6        CITIZENSHIP OR PLACE OR ORGANIZATION

         United States
--------------------------------------------------------------------------------
                                              7     SOLE VOTING POWER
                                                    6,105,500*
                 NUMBER OF                   -----------------------------------
                   SHARES                     8     SHARED VOTING POWER
                BENEFICIALLY                        -0-
                  OWNED BY                   -----------------------------------
                    EACH                      9     SOLE DISPOSITIVE POWER
                 REPORTING                          6,105,500*
                   PERSON                    -----------------------------------
                    WITH                      10    SHARED DISPOSITIVE POWER
                                                    -0-
--------------------------------------------------------------------------------
11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         6,105,500*
--------------------------------------------------------------------------------
12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

              [_]  Not Applicable
--------------------------------------------------------------------------------
13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         14.8%*
--------------------------------------------------------------------------------
14       TYPE OF REPORTING PERSON

         OO
--------------------------------------------------------------------------------

----------
* The Fund is the  beneficial  owner of 6,105,500  Shares of the  Company.  PCM
serves as the  investment  manager of the Fund and possesses sole power to vote
and direct the  disposition  of all Shares  held by the Fund.  PCM LLC,  as the
general partner of PCM, and Mr. Karim Samii, as the sole member of PCM LLC, may
be deemed to be the beneficial owners of all Shares held by the Fund;  however,
PCM LLC and Mr. Samii disclaim  beneficial  ownership of all Shares held by the
Fund.  Based on information  provided by the Company,  as of May 31, 2006 there
were 41,310,827  shares of the Company's  common stock issued and  outstanding.
Thus, for the purposes of Reg. Section  240.13d-3,  the Fund and PCM are deemed
to  beneficially  own,  and PCM  LLC  and Mr.  Karim  Samii  may be  deemed  to
beneficially own,  6,105,500  Shares, or approximately  14.8% of the issued and
outstanding Shares.



CUSIP NO.  05873K108                                              PAGE 5 OF 8

                                  SCHEDULE 13D

--------------------------------------------------------------------------------
1        NAME OF REPORTING PERSON

         Mr. Karim Samii
--------------------------------------------------------------------------------
2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

         (a)  [_]  Not
         (b)  [X]  Applicable
--------------------------------------------------------------------------------
3        SEC USE ONLY


--------------------------------------------------------------------------------
4        SOURCE OF FUNDS

         WC
--------------------------------------------------------------------------------
5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(D) OR 2(E)

              [_]  Not Applicable
--------------------------------------------------------------------------------
6        CITIZENSHIP OR PLACE OR ORGANIZATION

         United States
--------------------------------------------------------------------------------
                                              7     SOLE VOTING POWER
                                                    6,105,500*
                 NUMBER OF                   -----------------------------------
                   SHARES                     8     SHARED VOTING POWER
                BENEFICIALLY                        -0-
                  OWNED BY                   -----------------------------------
                    EACH                      9     SOLE DISPOSITIVE POWER
                 REPORTING                          6,105,500*
                   PERSON                    -----------------------------------
                    WITH                      10    SHARED DISPOSITIVE POWER
                                                    -0-
--------------------------------------------------------------------------------
11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         6,105,500*
--------------------------------------------------------------------------------
12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

              [_]  Not Applicable
--------------------------------------------------------------------------------
13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         14.8%*
--------------------------------------------------------------------------------
14       TYPE OF REPORTING PERSON

         IN
--------------------------------------------------------------------------------

----------
* The Fund is the beneficial owner of 6,105,500 Shares of the Company. PCM
serves as the investment manager of the Fund and possesses sole power to vote
and direct the disposition of all Shares held by the Fund. PCM LLC, as the
general partner of PCM, and Mr. Karim Samii, as the sole member of PCM LLC, may
be deemed to be the beneficial owners of all Shares held by the Fund; however,
PCM LLC and Mr. Samii disclaim beneficial ownership of all Shares held by the
Fund. Based on information provided by the Company, as of May 31, 2006 there
were 41,310,827 shares of the Company's common stock issued and outstanding.
Thus, for the purposes of Reg. Section 240.13d-3, the Fund and PCM are deemed
to beneficially own, and PCM LLC and Mr. Karim Samii may be deemed to
beneficially own, 6,105,500 Shares, or approximately 14.8% of the issued and
outstanding Shares.



CUSIP NO.  05873K108                                              PAGE 6 OF 8


         Pursuant to Rule 13d-2(a) of the General Rules and  Regulations  under
the Securities  Exchange Act of 1934, as amended (the "Act"),  the  undersigned
hereby amends the Schedule 13D  Statement  originally  filed by Pardus  Capital
Management L.P., a Delaware  limited  partnership  ("PCM"),  dated September 6,
2005, as amended by Amendment No. 1, dated September 6, 2005,  Amendment No. 2,
dated September 6, 2005,  Amendment No. 3, dated  September 8, 2005,  Amendment
No. 4, dated  September 15, 2005,  Amendment  No. 5, dated  September 23, 2005,
Amendment  No. 6, dated  October 6, 2005,  Amendment  No. 7, dated  October 17,
2005,  Amendment  No. 8, dated October 24, 2005,  Amendment No. 9, 2005,  dated
November 17, 2005,  Amendment No. 10, dated December 5, 2005, Amendment No. 11,
dated December 8, 2005, Amendment No.12, dated December 29, 2005, Amendment No.
13, dated January 10, 2006, Amendment No. 14, dated January 12, 2006, Amendment
No. 15, dated  January 17,  2006,  Amendment  No. 16,  dated  January 23, 2006,
Amendment No. 17, dated  January 23, 2006,  Amendment No. 18, dated January 27,
2006,  Amendment No. 19, dated April 20, 2006, and Amendment No. 20, dated July
27, 2006 (as amended,  the "Schedule  13D"),  relating to the common stock, par
value  $0.01  per  share  (the  "Shares"),   of  Bally  Total  Fitness  Holding
Corporation,  a Delaware corporation (the "Company").  This Amendment No. 21 to
the  Schedule  13D  is  being  filed  on  behalf  of  Pardus  European  Special
Opportunities  Master Fund L.P., a limited partnership formed under the laws of
the Cayman Islands (the "Fund"), PCM, Pardus Capital Management LLC, a Delaware
limited  liability  company ("PCM LLC"), and Mr. Karim Samii  (individually,  a
"Reporting Person", and collectively, the "Reporting Persons").

Item 1.  SECURITY AND ISSUER.

         No material change.

Item 2.  IDENTITY AND BACKGROUND.

         No material change.

Item 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         No material change.

Item 4.  PURPOSE OF TRANSACTION.

         This Item 4 is hereby amended by adding the following:

         "On August 24, 2006,  after a series of discussions,  the Fund and the
Company  entered  into  a  confidentiality   agreement  (the   "Confidentiality
Agreement")  pursuant to which,  among  other  things,  the  Company  will make
available  to the Fund and its  representatives,  including a  consulting  firm
engaged by the Fund to prepare a report for the Reporting Persons in respect of
the  Company  and its  operations,  certain  non-public  information  about the
Company for the purpose of  evaluating  and  negotiating  a possible  strategic
transaction  with the  Company.  Subject  to certain  exceptions,  the Fund has
agreed to maintain the  confidentiality of any confidential  information of the
Company  provided to it and has also agreed,  in exchange for the  agreement of
the  Company to provide  an  appropriate  and  adequate  public  summary of all
material  non-public  information  provided to the Fund and its representatives
pursuant to the Confidentiality  Agreement,  that for a period ending three (3)
business  days  after the  Deadline  Date (as  defined  in the  Confidentiality
Agreement,  which in any event shall not be later than 1:00 p.m. on October 16,
2006),  the  Reporting  Persons  will not  purchase or sell,  or enter into any
agreements  to  purchase  or sell,  or  otherwise  transact  in any way in, any
securities  (or  beneficial  ownership  thereof) of the  Company,  or rights or
options to acquire any  securities  (or  beneficial  ownership  thereof) of the
Company,  including  derivative  securities  representing  the right to vote or
economic  benefits of any such  securities.  The Company and the Fund have also
agreed,   subject  to  the   confidentiality   obligations   contained  in  the
Confidentiality  Agreement,  that  nothing  contained  in  the  Confidentiality
Agreement  shall  prevent or  prohibit  the Fund from  nominating  persons  for
election  to the  Company's  board of  directors,  bringing  business  before a
meeting of the  Company's  stockholders,  conducting  a proxy  solicitation  in
support of director  nominees of the Fund or in respect of any other  matter or
using any of the  confidential  information  of the  Company  contained  in the
report  of  the  consulting  firm  engaged  by the  Fund  to  the  extent  such
information  is  publicly  disclosed  in  accordance  with  the  terms  of  the
Confidentiality  Agreement. A copy of the Confidentiality Agreement is attached
hereto as Exhibit 29 and incorporated herein by reference.




CUSIP NO.  05873K108                                              PAGE 7 OF 8


         The Reporting  Persons  intend to review the Fund's  investment in the
Company on a continuing  basis and, subject to the  Confidentiality  Agreement,
may engage in discussions  with  management,  the Company's board of directors,
other  stockholders  of the Company and other relevant  parties  concerning the
business, operations, board composition,  management, strategy and future plans
of the Company. Depending on various factors including, without limitation, the
Company's  financial  position  and  strategic  direction,  the  outcome of the
discussions  and  actions   referenced  above,  price  levels  of  the  Shares,
conditions  in  the  securities   market  and  general  economic  and  industry
conditions,  the  Reporting  Persons may in the future take such  actions  with
respect to the Fund's  investment in the Company as the Reporting  Persons deem
appropriate  including,  without  limitation,  purchasing  additional Shares or
selling some or all of the Fund's  Shares,  engaging in short selling of or any
hedging or similar  transactions  with respect to the Shares  and/or  otherwise
changing the Reporting  Persons'  intention with respect to any and all matters
referred to in Item 4 of Schedule 13D.

         Except as otherwise  described in this Item 4 of this Schedule 13D, as
amended,  the acquisition of the Shares by the Fund is for investment  purposes
on behalf of the Fund."

Item 5.  INTEREST IN SECURITIES OF THE ISSUER.

         No material change.

Item 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
         TO SECURITIES OF THE ISSUER.

         This Item 6 is hereby amended by adding the following:

         "On August 24, 2006,  after a series of discussions,  the Fund and the
Company entered into the  Confidentiality  Agreement  pursuant to which,  among
other   things,   the  Company  will  make   available  to  the  Fund  and  its
representatives  certain  non-public  information  about  the  Company  for the
purpose of evaluating and negotiating a possible strategic transaction with the
Company. A copy of the Confidentiality  Agreement is attached hereto as Exhibit
29 and incorporated herein by reference."

Item 7.  MATERIAL TO BE FILED AS EXHIBITS.

                  Exhibit 28:    Joint Filing Agreement, dated August 25, 2006,
                                 among the Reporting Persons.

                  Exhibit 29:    Confidentiality  Agreement, dated as of August
                                 24,  2006,  by and  between  the  Fund and the
                                 Company.



CUSIP NO.  05873K108                                              PAGE 8 OF 8


                                    SIGNATURE


                  After reasonable inquiry and to the best of its or his
knowledge and belief, each of the undersigned certifies that the information set
forth in this statement is true, complete and correct.

Dated:  August 25, 2006

                                    PARDUS EUROPEAN SPECIAL OPPORTUNITIES
                                    MASTER FUND L.P.

                                      By: Pardus Capital Management L.P.,
                                          its Investment Manager

                                      By: Pardus Capital Management LLC,
                                          its general partner


                                      By: /s/ Karim Samii
                                          -----------------------------------
                                          Name:  Karim Samii
                                          Title: Sole Member



                                    PARDUS CAPITAL MANAGEMENT L.P.

                                      By: Pardus Capital Management LLC,
                                          its general partner


                                      By: /s/ Karim Samii
                                          -----------------------------------
                                          Name:  Karim Samii
                                          Title: Sole Member



                                    PARDUS CAPITAL MANAGEMENT LLC


                                      By: /s/ Karim Samii
                                          -----------------------------------
                                          Name:  Karim Samii
                                          Title: Sole Member



                                      /s/ Karim Samii
                                      ---------------------------------------
                                      Karim Samii




Attention:  Intentional  misstatements  or omissions of fact constitute  Federal
criminal violations (See 18 U.S.C. 1001).