Exploring Predictors of Self-Perceived Cardiorespiratory Fitness ≥ 5 Years Beyond Breast Cancer Diagnosis: A Cross-Sectional Study
Abstract
:1. Introduction
2. Materials and Methods
2.1. Design and Participants
2.2. Eligibility Criteria and Group Classification
2.2.1. Inclusion Criteria
- Female sex.
- Age ≥ 18 years.
- Diagnosis of stage I–IIIa breast cancer at least five years prior to enrollment.
- No participation in structured fitness-related assessments within the past three months (to avoid bias in self-reported fitness levels).
2.2.2. Exclusion Criteria
- Any condition preventing the completion of the assessment protocol.
- Inability to understand the study procedures.
2.3. Variables
2.3.1. Demographic and Clinical Data Collection
2.3.2. Physical Fitness
2.3.3. Physical Activity Level
2.3.4. Cancer-Related Fatigue
2.3.5. Mood State
2.3.6. Pain Measures
2.3.7. Health-Related Quality of Life
2.3.8. Statistical Analysis
3. Results
3.1. Demographic and Clinical Characteristics
3.2. Physical Fitness
3.3. Physical Activity Level
3.4. Cancer-Related Fatigue
3.5. Mood State
3.6. Pain
3.7. Health-Related Quality of Life
3.8. Correlation and Multiple Regressions Analysis
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
BPI | Brief Pain Inventory |
BC | Breast cancer |
CI | Confidence interval |
CRF | Cancer-related fatigue |
EVEA | Scale for Mood Assessment |
HRQoL | Health-related quality of life |
ICC | Intraclass correlation coefficient |
IFIS | International Fitness Scale |
LTBCSs | Long-term breast cancer survivors |
VO₂max | Maximal oxygen uptake |
MET | Metabolic equivalent task |
MLTPA | Minnesota Leisure Time Physical Activity |
PA | Physical activity |
PFS | Piper Fatigue Scale |
QLQ-C30 | EORTC Core Quality of Life Quality of Life Questionnaire |
QLQ-BR23 | The breast-cancer-specific module |
SCC | Spearman’s correlation coefficient |
SD | Standard deviation |
VAS | Visual Analogue Scale |
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LTBCSs’ Cardiorespiratory Fitness | ||||
---|---|---|---|---|
Characteristics | Very Poor and Poor | Average | Good and Very Good | p/x2 |
1–2 (IFIS) | 3 (IFIS) | 4–5 (IFIS) | ||
(n = 28) | (n = 28) | (n = 24) | ||
Mean age ± SD (years) | 47.20 ± 8.26 | 49.46 ± 7.09 | 52.04 ± 8.41 | 0.09 a |
Mean time since diagnosis ± SD (months) | 90.15 ± 31.81 | 92.71 ± 28.16 | 88.13 ± 28.17 | 0.85 a |
Mean time since the first surgery ± SD (months) | 86.53 ± 32.69 | 90.42 ± 28.23 | 85.52 ± 28.35 | 0.82 a |
Marital Status, n (%) | ||||
Not married | 5 (17.8) | 7 (25) | 1 (4.1) | 0.06 b |
Married | 17 (60.7) | 19 (69.7) | 19 (79.1) | |
Divorced | 6 (21.4) | 2 (7.1) | 0 (0) | |
Widowed | 0 (0) | 0 (0) | 4 (16.6) | |
Educational level, n (%) | ||||
Primary school | 8 (28.5) | 14 (50) | 13 (54.1) | 0.35 b |
Secondary school | 9 (32.1) | 5 (17.9) | 4 (16.6) | |
University | 11 (39.2) | 9 (32.1) | 7 (29.1) | |
Employment Status, n (%) | ||||
Homemaker | 10 (35.7) | 5 (17.9) | 11 (45.8) | 0.28 b |
Currently working | 5 (17.8) | 7 (25) | 5 (20.8) | |
Sick leave | 12 (42.8) | 11 (39.3) | 6 (25) | |
Retired | 1 (3.5) | 5 (17.9) | 2 (8.3) | |
Tumor stage, n (%) | ||||
I | 5 (17.8) | 6 (35.7) | 4 (16.6) | 0.53 b |
II | 19 (6.8) | 12 (50) | 18 (75) | |
IIIa | 4 (14.2) | 2 (14.3) | 2 (8.3) | |
Tumor Location, n (%) | ||||
Right side | 11 (39.2) | 9 (32.1) | 6 (25) | 0.57 b |
Left side | 15 (53.5) | 17 (60.7) | 18 (75) | |
Bilateral | 2 (7.1) | 2 (7.1) | 0 (0) | |
Tobacco consumption, n (%) | ||||
Non-smoker | 13 (46.4) | 13 (46.4) | 14 (58.3) | 0.15 b |
Smoker | 10 (35.7) | 5 (17.9) | 3 (12.5) | |
Ex-smoker | 5 (17.8) | 10 (35.7) | 7 (29.1) | |
Alcohol consumption, n (%) | ||||
No consumption | 10 (35.7) | 9 (32.1) | 11 (45.8) | 0.06 b |
Monthly | 7 (25) | 11 (39.3) | 2 (8.33) | |
Weekly | 8 (28.5) | 7 (25) | 11 (45.8) | |
Daily | 3 (10.7) | 1 (13.6) | 0 (0) | |
Family history of breast cancer, n (%) | ||||
No | 11 (39.2) | 16 (55.1) | 13 (54.1) | 0.32 b |
Yes | 17 (60.7) | 12 (42.9) | 11 (45.8) | |
Surgery, n (%) | ||||
Lumpectomy | 6 (21.4) | 5 (17.9) | 5 (20.8) | 0.48 b |
Quadrantectomy | 13 (46.4) | 11 (39.3) | 15 (62.5) | |
Unilateral mastectomy | 8 (28.5) | 9 (32.1) | 4 (16.6) | |
Bilateral mastectomy | 1 (3.5) | 3 (10.7) | 0 (0) | |
Type of treatment, n (%) | ||||
None | 0 (0) | 0 (0) | 0 (0) | 0.06 b |
Radiotherapy | 1 (3.5) | 2 (7.1) | 0 (0) | |
Chemotherapy | 0 (0) | 5 (17.9) | 1 (4.1) | |
Radiotherapy and chemotherapy | 27 (96.4) | 21 (75) | 23 (95.8) | |
Variety of medication, n (%) | ||||
None | 7 (25) | 6 (21.4) | 6 (25) | 0.63 b |
Tamoxifen | 13 (46.4) | 9 (32.1) | 8 (33.3) | |
Other types | 8 (28.5) | 13 (46.4) | 10 (41.6) | |
Metastasis, n (%) | ||||
No | 21 (75) | 24 (85.7) | 21 (87.5) | 0.49 b |
Yes | 7 (25) | 4 (14.3) | 3 (12.5) | |
Recurrence, n (%) | ||||
No | 24 (85.7) | 22 (78.6) | 21 (87.5) | 0.65 b |
Yes | 4 (14.2) | 6 (21.4) | 3 (12.5) | |
Menopause, n (%) | ||||
No | 3 (10.7) | 3 (10.7) | 5 (20.8) | 0.41 b |
Yes | 25 (89.2) | 25 (89.3) | 19 (79.1) | |
Currently seeing a psychologist or in the last three months, n (%) | ||||
No | 12 (42.8) | 10 (35.7) | 11 (45.8) | 0.68 b |
Yes | 16 (57.1) | 18 (64.3) | 13 (54.1) | |
Currently seeing a physiotherapist or in the last three months, n (%) | ||||
No | 11 (39.2) | 10 (35.7) | 9 (37.5) | 0.97 b |
Yes | 17 (60.7) | 18 (64.3) | 15 (62.5) |
Variables | LTBCSs Cardiorespiratory Fitness | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Very Poor/Poor | Average | Good/Very Good | ||||||||
1–2 | 3 | 4–5 | ||||||||
(IFIS) | (IFIS) | (IFIS) | p Values | Cohen’s d | p Values | Cohen’s d | p Values | Cohen’s d | ||
(n = 28) | (n = 28) | (n = 24) | 1–2 vs. 3 | 1–2 vs. 3 | 1–2 vs. 4–5 | 1–2 vs. 4–5 | 3 vs. 4–5 | 3 vs. 4–5 | ||
IFIS, mean ± SD (95% CI) a | ||||||||||
General physical fitness | 2.79 ± 0.94 (2.43–3.15) | 3.25 ± 0.79 (2.94–3.55) | 3.95 ± 0.92 (3.55–4.35) | 0.07 | 0.53 | <0.01 ** | >1.20 | <0.01 ** | 0.81 | |
Muscular strength | 2.34 ± 0.89 (2.00–2.68) | 2.75 ± 0.84 (2.42–3.07) | 3.69 ± 0.87 (3.31–4.07) | 0.06 | 0.47 | <0.01 ** | >1.20 | <0.01 ** | 1.10 | |
Speed/agility | 2.37 ± 0.82 (2.06–2.69) | 2.89 ± 0.68 (2.62–3.15) | 3.73 ± 0.91 (3.34–4.13) | 0.01 * | 0.69 | <0.01 ** | >1.20 | <0.01 ** | 1.05 | |
Flexibility | 2.44 ± 0.98 (2.07–2.82) | 2.71 ± 0.97 (2.33–3.09) | 3.60 ± 0.78 (3.27–3.94) | 0.31 | 0.28 | <0.01 ** | >1.20 | <0.01 ** | 1.01 | |
MLTPA (MET hour/week), n (%) b | ||||||||||
Inactive (≤ 3) | 12 (42.8) | 4 (14.3) | 5 (20.8) | 0.07 | - | 0.02 * | - | 0.53 | - | |
Low activity (3.1–7.4) | 9 (32.1) | 14 (50) | 8 (33.3) | |||||||
Active (≥ 7.5) | 7 (25) | 10 (35.7) | 11 (45.8) | |||||||
PFS domains, mean ± SD (95% CI) a | ||||||||||
Behavioral/severity | 3.71 ± 3.10 (2.53–4.89) | 3.77 ± 2.86 (2.66–4.88) | 1.13 ± 1.43 (0.51–1.75) | 0.94 | 0.02 | <0.01 ** | 1.07 | 0.02 * | 1.17 | |
Affective | 4.21 ± 3.29 (2.95–5.46) | 4.05 ± 13.09 (2.85–5.25) | 1.30 ± 2.14 (0.37–2.23) | 0.70 | 0.02 | <0.01 ** | 1.05 | <0.01 ** | 0.29 | |
Sensory | 4.31 ± 3.15 (3.11–5.51) | 4.26 ± 3.00 (3.09–5.43) | 1.45 ± 2.08 (0.55–2.35) | 0.86 | 0.02 | <0.01 ** | 1.07 | <0.01 ** | 1.09 | |
Cognitive/mood | 3.91 ± 3.12 (2.73–5.10) | 3.96 ± 2.89 (2.84–5.08) | 1.37 ± 1.93 (0.54–2.21) | 0.94 | 0.02 | <0.01 ** | 0.98 | <0.01 ** | 1.05 | |
Total fatigue score | 4.02 ± 2.92 (2.90–5.13) | 4.04 ± 2.77 (2.96–5.11) | 1.31 ± 1.67 (0.58–2.03) | 0.89 | 0.01 | <0.01 ** | 1.14 | <0.01 ** | 1.19 | |
PFS (Cut score type A), (%) b | ||||||||||
No fatigue | 0–0.9 | 6 (21.4) | 6 (21.4) | 14 (58.3) | 0.66 | - | 0.03 * | - | <0.01 ** | - |
Mild | 1–3.9 | 5 (17.8) | 8 (28.6) | 8 (33.3) | ||||||
Moderate | 4–6.9 | 13 (46.4) | 9 (32.1) | 2 (8.3) | ||||||
Severe | 7–10 | 4 (14.2) | 5 (17.9) | 0 (0) | ||||||
PFS (Cut score type B), (%) b | ||||||||||
No fatigue | 0–0.9 | 6 (21.4) | 6 (21.4) | 14 (58.3) | 0.90 | - | 0.01* | - | <0.01 ** | - |
Mild | 1–2.9 | 5 (17.8) | 5 (17.9) | 6 (25) | ||||||
Moderate | 3–5.9 | 9 (32.1) | 11 (39.3) | 4 (16.6) | ||||||
Severe | 6–10 | 8 (28.5) | 6 (21.4) | 0 (0) | ||||||
EVEA, mean ± SD (95% CI) a | ||||||||||
Sadness–depression | 3.45 ± 2.79 (2.39–4.51) | 3.08 ± 2.92 (1.95–4.22) | 2.03 ± 2.15 (1.10–2.96) | 0.58 | 0.13 | 0.22 | 0.57 | 0.32 | 0.41 | |
Anxiety | 3.32 ± 2.81 (2.25–4.39) | 3.53 ± 2.92 (2.40–4.66) | 2.13 ± 1.63 (1.42–2.83) | 0.79 | 0.07 | 0.29 | 0.52 | 0.15 | 0.59 | |
Anger–hostility | 2.62 ± 2.86 (1.53–3.70) | 2.52 ± 2.60 (1.51–3.53) | 1.44 ± 1.60 (0.75–2.14) | 0.89 | 0.04 | 0.45 | 0.51 | 0.21 | 0.50 | |
Happiness | 6.45 ± 9.61 (2.79–10.11) | 5.33 ± 2.15 (4.50–6.17) | 6.20 ± 2.57 (5.09–7.31) | 0.43 | 0.16 | 0.15 | 0.04 | 0.20 | 0.37 | |
VAS (cm), mean ± SD (95% CI) a | ||||||||||
Affected arm | 2.79 ± 2.87 (1.70–3.88) | 2.57 ± 2.63 (1.55–3.59) | 1.39 ± 1.94 (0.54–2.23) | 0.64 | 0.08 | 0.08 | 0.57 | 0.09 | 0.51 | |
Unaffected arm | 1.75 ± 2.98 (0.62–2.89) | 1.71 ± 2.89 (0.59–2.83) | 0.78 ± 1.88 (−0.03–1.5) | 0.98 | 0.01 | 0.21 | 0.39 | 0.10 | 0.38 | |
BPI, mean ± SD (95% CI) a | ||||||||||
Intensity | 3.31 ± 2.76 (2.25–4.36) | 2.21 ± 2.17 (1.37–3.05) | 1.05 ± 1.97 (0.20–1.91) | 0.15 | 0.44 | <0.01 ** | 0.94 | 0.02 * | 0.56 | |
Interference | 3.18 ± 2.95 (2.06–4.30) | 2.01 ± 2.59 (1.00–3.02) | 0.58 ± 1.47 (−0.05–1.21) | 0.12 | 0.42 | <0.01 ** | 1.12 | 0.02 * | 0.68 |
LTBCSs Cardiorespiratory Fitness | |||||||||
---|---|---|---|---|---|---|---|---|---|
Variables | Very Poor and Poor | Average | Good and Very Good | ||||||
1–2 | 3 | 4–5 | |||||||
(IFIS) | (IFIS) | (IFIS) | p values | Cohen’s d | p Values | Cohen’s d | p Values | Cohen’s d | |
(n = 28) | (n = 28) | (n = 24) | 1–2 vs. 3 | 1–2 vs. 3 | 1–2 vs. 4–5 | 1–2 vs. 4–5 | 3 vs. 4–5 | 3 vs. 4–5 | |
Functioning Scales QLQ-C30, mean ± SD (95% CI) | |||||||||
Physical Functioning | 32.18 ± 18.86 (25.00–39.35) | 35.10 ± 24.14 (25.74–44.46) | 22.98 ± 11.47 (24.01–33.94) | 0.83 | 0.13 | 0.82 | 0.59 | 0.55 | 0.64 |
Role functioning | 72.38 ± 25.77 (62.57–82.18) | 83.45 ± 14.38 (77.87–89.03) | 90.97 ± 13.57 (85.10–96.84) | 0.15 | 0.53 | <0.01 ** | 0.90 | 0.02 * | 0.54 |
Emotional functioning | 66.66 ± 34.78 (53.43–79.89) | 83.33 ± 23.56 (74.19–92.47) | 90.57 ± 22.37 (80.90–100.25) | 0.05 * | 0.56 | <0.01 ** | 0.82 | 0.13 | 0.32 |
Cognitive functioning | 54.59 ± 30.42 (43.02–66.16) | 62.49 ± 27.91 (51.67–73.32) | 81.15 ± 29.00 (68.61–93.69) | 0.36 | 0.27 | <0.01 ** | 0.89 | <0.01 ** | 0.66 |
Social functioning | 56.89 ± 27.28 (46.51–67.27) | 57.73 ± 36.42 (43.61–71.86) | 73.18 ± 25.98 (61.95–84.42) | 0.74 | 0.03 | 0.11 | 0.61 | 0.15 | 0.49 |
Symptom Scales QLQ-C30, mean ± SD (95% CI) | |||||||||
Fatigue | 82.60 ± 31.17 (69.12–96.08) | 75.59 ± 29.21 (64.26–86.92) | 61.49 ± 32.76 (49.03–73.95) | 0.09 | 0.23 | 0.02 * | 0.66 | 0.27 | 0.45 |
Nausea and Vomiting | 51.72 ± 32.83 (39.23–64.21) | 34.12 ± 27.70 (23.38–44.86) | 20.29 ± 24.76 (9.58–31.00) | 0.04 * | 0.58 | <0.01 ** | 1.08 | 0.05 * | 0.53 |
Pain | 8.62 ± 17.03 (2.14–15.09) | 10.71 ± 24.09 (1.37–20.05) | 2.17 ± 7.62 (−1.12–5.47) | 0.89 | 0.10 | 0.29 | 0.49 | 0.17 | 0.48 |
Single Items QLQ-C30, mean ± SD (95% CI) | |||||||||
Dyspnea | 50.57 ± 33.17 (37.95–63.19) | 37.49 ± 29.61 (26.01–48.98) | 25.36 ± 29.67 (12.53–38.19) | 0.13 | 0.42 | 0.01 * | 0.80 | 0.10 | 0.41 |
Insomnia | 35.63 ± 35.55 (22.10–49.15) | 21.42 ± 27.53 (10.74–32.10) | 10.14 ± 23.42 (0.01–20.27) | 0.12 | 0.45 | <0.01 ** | 0.85 | 0.06 | 0.44 |
Appetite loss | 60.34 ± 35.19 (46.95–73.73) | 52.38 ± 31.98 (39.97–64.78) | 34.78 ± 30.94 (21.40–48.16) | 0.33 | 0.24 | 0.02 * | 0.77 | 0.06 | 0.56 |
Constipation | 22.98 ± 35.74 (9.38–36.58) | 7.14 ± 16.62 (0.69–13.58) | 2.89 ± 9.60 (−1.25–7.05) | 0.06 | 0.57 | 0.02 * | 0.77 | 0.33 | 0.31 |
Diarrhea | 28.73 ± 37.50 (14.46–43.00) | 29.16 ± 31.95 (16.77–41.55) | 15.94 ± 22.17 (6.35–25.53) | 0.76 | 0.01 | 0.37 | 0.42 | 0.14 | 0.48 |
Financial Difficulties | 9.19 ± 23.39 (0.29–18.09) | 16.66 ± 26.44 (6.41–26.92) | 10.14 ± 18.62 (2.08–18.19) | 0.13 | 0.30 | 0.31 | 0.04 | 0.40 | 0.29 |
Global Health Status QLQ-C30, mean ± SD (95% CI) | |||||||||
Global health status | 10.28 ± 25.44 (−0.71–21.29) | 22.98 ± 34.62 (9.81–36.15) | 33.33 ± 36.28 (19.26–47.40) | 0.19 | 0.42 | 0.03 * | 0.74 | <0.01 ** | 0.29 |
Summary Score QLQ-C30, mean ± SD (95% CI) | |||||||||
Summary score | 58.66 ± 17.02 (52.18–65.13) | 65.69 ± 13.13 (60.60–70.79) | 74.66 ± 11.65 (69.62–79.70) | 0.12 | 0.46 | <0.01 ** | 1.10 | <0.01 ** | 0.72 |
Functional Scales QLQ-BR23, mean ± SD (95% CI) | |||||||||
Body image | 54.31 ± 23.21 (45.48–63.13) | 62.60 ± 18.76 (54.92–69.48) | 77.17 ± 19.97 (68.53–85.81) | 0.15 | 0.39 | <0.01 ** | 1.06 | 0.01 * | 0.75 |
Sexual functioning | 69.82 ± 30.97 (58.04–81.60) | 76.78 ± 26.19 (66.63–86.94) | 86.95 ± 24.20 (76.48–97.42) | 0.35 | 0.24 | 0.01 * | 0.62 | 0.04 * | 0.40 |
Sexual enjoyment | 16.66 ± 18.89 (9.47–23.85) | 26.78 ± 21.43 (18.47–35.09) | 22.46 ± 22.81 (12.59–32.32) | 0.05 * | 0.50 | 0.18 | 0.28 | 0.49 | 0.20 |
Future perspective | 32.18 ± 25.94 (22.31–42.05) | 36.90 ± 22.84 (28.04–45.75) | 26.08 ± 26.50 (14.62–37.54) | 0.46 | 0.19 | 0.21 | 0.23 | 0.06 | 0.44 |
Symptom Scales QLQ-BR23, mean ± SD (95% CI) | |||||||||
Systemic therapy side effects | 47.12 ± 38.33 (32.54–61.70) | 47.61 ± 36.77 (33.36–61.87) | 72.46 ± 35.74 (57.00–87.92) | 0.96 | 0.01 | 0.02 * | 0.68 | 0.01 * | 0.69 |
Breast symptoms | 32.51 ± 23.40 (23.61–41.41) | 33.50 ± 18.84 (26.19–40.81) | 17.75 ± 22.46 (8.03–27.46) | 0.61 | 0.05 | <0.01 ** | 0.64 | <0.01 ** | 0.76 |
Arm symptoms | 30.74 ± 30.62 (19.09–42.39) | 28.57 ± 25.19 (18.80–38.34) | 17.39 ± 24.60 (6.75–28.03) | 0.94 | 0.08 | 0.11 | 0.48 | 0.05 * | 0.45 |
Upset by hair loss | 33.33 ± 30.42 (21.75–44.90) | 37.30 ± 33.01 (24.49–25.10) | 23.18 ± 28.01 (11.07–35.30) | 0.70 | 0.13 | 0.21 | 0.35 | 0.09 | 0.46 |
Model 1 r2 = 0.379 | Model 2 r2 = 0.472 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Variables /Predictors | β | 95% CI | t | p | Linear Regression Equation Y = a + bX | Variables /Predictors | β | 95% CI | t | p | Linear Regression Equation Y = a + bX |
Self-perceived muscle strength (IFIS) | 0.61 | 0.47 ± 0.85 | 6.90 | <0.01 ** | Self-perceived cardiorespiratory fitness = 0.98 + (0.66 Self-perceived muscle strength) | Self-perceived muscle strength (IFIS) | 0.40 | 0.22 ± 0.65 | 4.01 | <0.01 ** | Self-perceived cardiorespiratory fitness = 0.38 + (0.43 Self-perceived muscle strength) + (−0.42 Nausea and vomiting) |
Nausea and vomiting (QLQ-C30) | −0.37 | −0.19 ± −0.65 | −3.67 | <0.01 ** |
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Álvarez-Salvago, F.; Figueroa-Mayordomo, M.; Molina-García, C.; Atienzar-Aroca, S.; Pujol-Fuentes, C.; Jiménez-García, J.D.; Gutiérrez-García, P.; Ching-López, R.; Medina-Luque, J. Exploring Predictors of Self-Perceived Cardiorespiratory Fitness ≥ 5 Years Beyond Breast Cancer Diagnosis: A Cross-Sectional Study. Healthcare 2025, 13, 718. https://doi.org/10.3390/healthcare13070718
Álvarez-Salvago F, Figueroa-Mayordomo M, Molina-García C, Atienzar-Aroca S, Pujol-Fuentes C, Jiménez-García JD, Gutiérrez-García P, Ching-López R, Medina-Luque J. Exploring Predictors of Self-Perceived Cardiorespiratory Fitness ≥ 5 Years Beyond Breast Cancer Diagnosis: A Cross-Sectional Study. Healthcare. 2025; 13(7):718. https://doi.org/10.3390/healthcare13070718
Chicago/Turabian StyleÁlvarez-Salvago, Francisco, Maria Figueroa-Mayordomo, Cristina Molina-García, Sandra Atienzar-Aroca, Clara Pujol-Fuentes, José Daniel Jiménez-García, Palmira Gutiérrez-García, Rosario Ching-López, and Jose Medina-Luque. 2025. "Exploring Predictors of Self-Perceived Cardiorespiratory Fitness ≥ 5 Years Beyond Breast Cancer Diagnosis: A Cross-Sectional Study" Healthcare 13, no. 7: 718. https://doi.org/10.3390/healthcare13070718
APA StyleÁlvarez-Salvago, F., Figueroa-Mayordomo, M., Molina-García, C., Atienzar-Aroca, S., Pujol-Fuentes, C., Jiménez-García, J. D., Gutiérrez-García, P., Ching-López, R., & Medina-Luque, J. (2025). Exploring Predictors of Self-Perceived Cardiorespiratory Fitness ≥ 5 Years Beyond Breast Cancer Diagnosis: A Cross-Sectional Study. Healthcare, 13(7), 718. https://doi.org/10.3390/healthcare13070718