Machine Back Extension

Machine Back Extension shows average weight and strength standards as a reference for back. Primary muscles: Erector spinae, Gluteus maximus.

View Shiba App

Average weight: Intermediate

Reference for an intermediate lifter.

Men 264 lb

Women 90 lb

Machine Back Extension: Average weight [1RM]

Level
Beginner	67 lb	28 lb
Novice	147 lb	54 lb
Intermediate	264 lb	90 lb
Advanced	415 lb	135 lb
Elite	591 lb	187 lb

Note: These standards are 1RM estimates based on average lifters. Bodyweight, age, and other personal factors can affect the values. See the detailed tables below.

Machine Back Extension: Strength standards (lb)

By bodyweight
By age

Men by bodyweight (lb) [1RM]

Bodyweight	Beginner	Novice	Intermediate	Advanced	Elite
110	20	65	140	243	367
120	29	80	161	270	400
130	38	95	182	297	433
140	47	109	202	322	463
150	57	124	221	347	493
160	67	138	241	371	521
170	77	153	259	394	549
180	87	167	278	417	575
190	97	181	296	438	601
200	108	195	313	460	626
210	118	208	330	481	650
220	128	222	347	501	674
230	138	235	364	520	696
240	148	248	380	540	719
250	158	260	395	558	740
260	168	273	411	577	761
270	177	285	426	595	782
280	187	297	441	612	802
290	196	309	455	629	821
300	206	321	470	646	841
310	215	333	484	662	859

Men by age [1RM]

Age	Beginner	Novice	Intermediate	Advanced	Elite
15	57	125	225	353	504
20	65	143	257	405	576
25	67	147	264	415	591
30	67	147	264	415	591
35	67	147	264	415	591
40	67	147	264	415	591
45	63	139	250	394	561
50	59	131	235	370	527
55	55	121	217	342	487
60	50	110	198	312	445
65	45	100	179	282	402
70	41	89	161	253	360
75	36	80	144	226	322
80	33	71	129	202	288
85	29	64	115	181	258
90	26	58	104	163	233

Women by bodyweight (lb) [1RM]

Bodyweight	Beginner	Novice	Intermediate	Advanced	Elite
90	17	38	69	108	153
100	20	42	73	114	160
110	22	45	78	119	167
120	24	48	82	124	173
130	27	51	86	129	178
140	29	54	89	133	184
150	31	57	93	138	189
160	32	59	96	142	193
170	34	62	99	146	198
180	36	64	102	149	202
190	38	67	105	153	206
200	40	69	108	156	210
210	41	71	111	159	214
220	43	73	113	162	218
230	44	75	116	165	221
240	46	77	118	168	224
250	47	79	121	171	228
260	49	81	123	174	231

Women by age [1RM]

Age	Beginner	Novice	Intermediate	Advanced	Elite
15	24	46	76	115	159
20	27	52	87	131	182
25	28	54	90	135	187
30	28	54	90	135	187
35	28	54	90	135	187
40	28	54	90	135	187
45	26	51	85	128	177
50	25	48	80	120	166
55	23	44	74	111	154
60	21	40	67	101	140
65	19	36	61	92	127
70	17	33	55	82	114
75	15	29	49	74	102
80	14	26	44	66	91
85	12	23	39	59	82
90	11	21	35	53	74

Note: The displayed load on machines and cables can vary by manufacturer and setup. Use these values as a comparison reference under similar equipment conditions.

Bodyweight	Beginner	Novice	Intermediate	Advanced	Elite
110	20	65	140	243	367
120	29	80	161	270	400
130	38	95	182	297	433
140	47	109	202	322	463
150	57	124	221	347	493
160	67	138	241	371	521
170	77	153	259	394	549
180	87	167	278	417	575
190	97	181	296	438	601
200	108	195	313	460	626
210	118	208	330	481	650
220	128	222	347	501	674
230	138	235	364	520	696
240	148	248	380	540	719
250	158	260	395	558	740
260	168	273	411	577	761
270	177	285	426	595	782
280	187	297	441	612	802
290	196	309	455	629	821
300	206	321	470	646	841
310	215	333	484	662	859

Age	Beginner	Novice	Intermediate	Advanced	Elite
15	57	125	225	353	504
20	65	143	257	405	576
25	67	147	264	415	591
30	67	147	264	415	591
35	67	147	264	415	591
40	67	147	264	415	591
45	63	139	250	394	561
50	59	131	235	370	527
55	55	121	217	342	487
60	50	110	198	312	445
65	45	100	179	282	402
70	41	89	161	253	360
75	36	80	144	226	322
80	33	71	129	202	288
85	29	64	115	181	258
90	26	58	104	163	233

Bodyweight	Beginner	Novice	Intermediate	Advanced	Elite
90	17	38	69	108	153
100	20	42	73	114	160
110	22	45	78	119	167
120	24	48	82	124	173
130	27	51	86	129	178
140	29	54	89	133	184
150	31	57	93	138	189
160	32	59	96	142	193
170	34	62	99	146	198
180	36	64	102	149	202
190	38	67	105	153	206
200	40	69	108	156	210
210	41	71	111	159	214
220	43	73	113	162	218
230	44	75	116	165	221
240	46	77	118	168	224
250	47	79	121	171	228
260	49	81	123	174	231

Age	Beginner	Novice	Intermediate	Advanced	Elite
15	24	46	76	115	159
20	27	52	87	131	182
25	28	54	90	135	187
30	28	54	90	135	187
35	28	54	90	135	187
40	28	54	90	135	187
45	26	51	85	128	177
50	25	48	80	120	166
55	23	44	74	111	154
60	21	40	67	101	140
65	19	36	61	92	127
70	17	33	55	82	114
75	15	29	49	74	102
80	14	26	44	66	91
85	12	23	39	59	82
90	11	21	35	53	74

Group	Muscles
Primary muscles	Erector spinae, Gluteus maximus
Secondary muscles	Hamstrings
Stabilizers	External obliques
Grip	None

Level	Description	Distribution
Beginner	Has learned proper form and trained consistently for at least 1 month.	Bottom 5%
Novice	Has trained consistently for at least 6 months.	Top 80%
Intermediate	Has trained consistently for at least 2 years.	Top 50%
Advanced	Has trained consistently for more than 5 years.	Top 20%
Elite	Has specialized in this exercise for more than 5 years.	Top 5%

Bodyweight	Beginner	Novice	Intermediate	Advanced	Elite
110	20	65	140	243	367
120	29	80	161	270	400
130	38	95	182	297	433
140	47	109	202	322	463
150	57	124	221	347	493
160	67	138	241	371	521
170	77	153	259	394	549
180	87	167	278	417	575
190	97	181	296	438	601
200	108	195	313	460	626
210	118	208	330	481	650
220	128	222	347	501	674
230	138	235	364	520	696
240	148	248	380	540	719
250	158	260	395	558	740
260	168	273	411	577	761
270	177	285	426	595	782
280	187	297	441	612	802
290	196	309	455	629	821
300	206	321	470	646	841
310	215	333	484	662	859

Age	Beginner	Novice	Intermediate	Advanced	Elite
15	57	125	225	353	504
20	65	143	257	405	576
25	67	147	264	415	591
30	67	147	264	415	591
35	67	147	264	415	591
40	67	147	264	415	591
45	63	139	250	394	561
50	59	131	235	370	527
55	55	121	217	342	487
60	50	110	198	312	445
65	45	100	179	282	402
70	41	89	161	253	360
75	36	80	144	226	322
80	33	71	129	202	288
85	29	64	115	181	258
90	26	58	104	163	233

Bodyweight	Beginner	Novice	Intermediate	Advanced	Elite
90	17	38	69	108	153
100	20	42	73	114	160
110	22	45	78	119	167
120	24	48	82	124	173
130	27	51	86	129	178
140	29	54	89	133	184
150	31	57	93	138	189
160	32	59	96	142	193
170	34	62	99	146	198
180	36	64	102	149	202
190	38	67	105	153	206
200	40	69	108	156	210
210	41	71	111	159	214
220	43	73	113	162	218
230	44	75	116	165	221
240	46	77	118	168	224
250	47	79	121	171	228
260	49	81	123	174	231

Age	Beginner	Novice	Intermediate	Advanced	Elite
15	24	46	76	115	159
20	27	52	87	131	182
25	28	54	90	135	187
30	28	54	90	135	187
35	28	54	90	135	187
40	28	54	90	135	187
45	26	51	85	128	177
50	25	48	80	120	166
55	23	44	74	111	154
60	21	40	67	101	140
65	19	36	61	92	127
70	17	33	55	82	114
75	15	29	49	74	102
80	14	26	44	66	91
85	12	23	39	59	82
90	11	21	35	53	74

Machine Back Extension

Average weight: Intermediate

Machine Back Extension: Average weight [1RM]

Machine Back Extension: Strength standards (lb)

Men by bodyweight (lb) [1RM]

Men by age [1RM]

Women by bodyweight (lb) [1RM]

Women by age [1RM]

Muscles worked

Track and analyze in the Shiba app

How to read the table

More exercises

Full body

Chest

Back

Shoulders

Arms

Legs

Core

Bodyweight	Beginner	Novice	Intermediate	Advanced	Elite
110	20	65	140	243	367
120	29	80	161	270	400
130	38	95	182	297	433
140	47	109	202	322	463
150	57	124	221	347	493
160	67	138	241	371	521
170	77	153	259	394	549
180	87	167	278	417	575
190	97	181	296	438	601
200	108	195	313	460	626
210	118	208	330	481	650
220	128	222	347	501	674
230	138	235	364	520	696
240	148	248	380	540	719
250	158	260	395	558	740
260	168	273	411	577	761
270	177	285	426	595	782
280	187	297	441	612	802
290	196	309	455	629	821
300	206	321	470	646	841
310	215	333	484	662	859

Age	Beginner	Novice	Intermediate	Advanced	Elite
15	57	125	225	353	504
20	65	143	257	405	576
25	67	147	264	415	591
30	67	147	264	415	591
35	67	147	264	415	591
40	67	147	264	415	591
45	63	139	250	394	561
50	59	131	235	370	527
55	55	121	217	342	487
60	50	110	198	312	445
65	45	100	179	282	402
70	41	89	161	253	360
75	36	80	144	226	322
80	33	71	129	202	288
85	29	64	115	181	258
90	26	58	104	163	233

Bodyweight	Beginner	Novice	Intermediate	Advanced	Elite
90	17	38	69	108	153
100	20	42	73	114	160
110	22	45	78	119	167
120	24	48	82	124	173
130	27	51	86	129	178
140	29	54	89	133	184
150	31	57	93	138	189
160	32	59	96	142	193
170	34	62	99	146	198
180	36	64	102	149	202
190	38	67	105	153	206
200	40	69	108	156	210
210	41	71	111	159	214
220	43	73	113	162	218
230	44	75	116	165	221
240	46	77	118	168	224
250	47	79	121	171	228
260	49	81	123	174	231

Age	Beginner	Novice	Intermediate	Advanced	Elite
15	24	46	76	115	159
20	27	52	87	131	182
25	28	54	90	135	187
30	28	54	90	135	187
35	28	54	90	135	187
40	28	54	90	135	187
45	26	51	85	128	177
50	25	48	80	120	166
55	23	44	74	111	154
60	21	40	67	101	140
65	19	36	61	92	127
70	17	33	55	82	114
75	15	29	49	74	102
80	14	26	44	66	91
85	12	23	39	59	82
90	11	21	35	53	74